Answer:
Option C (on the example above) which is q(x)=4(0.5)^x+3
Step-by-step explanation:
A slab 150 PCF concrete is to be poured 20 feet above an existing floor at depth of 6 inches at a temp of 90 degrees and a pure rate of 10 feet per hour. what is the expected VERTICAL load? a) 943.333 PSF b) 943.333 PCF c) 150 PSF d) 75 PCF e) 75 PSF
The correct answer to the question is option d) 75 PCF.
To calculate the expected vertical load, we need to consider the weight of the concrete slab and the additional load due to the concrete's temperature and pouring rate. The weight of the slab can be calculated by multiplying the density of the concrete (150 PCF) by the depth (6 inches) and the area (1 square foot). This gives us a weight of 75 pounds per square foot (PSF).
The temperature and pouring rate do not directly affect the vertical load. The temperature and pouring rate are factors that may affect the structural integrity of the slab or the time it takes for the concrete to fully cure. However, they do not contribute to the actual load borne by the slab itself. Therefore, the correct answer is 75 PCF, as it represents the weight of the concrete slab alone.
For more information on PCF visit: brainly.com/question/21579391
#SPJ11
4. Triangle RST below will be dilated with the
origin as the center of dilation and a scale
factor of 4. What will be the coordinates of
the vertices of the dilated image, AR'ST?
12
11
10
C.
9
8
7
RTS
0123456789101112
A. R'(4, 12), S'(12, 12), T'(8,4)
B. R'(4, 12), S'(9, 9), T'(8, 1)
R' (2, 6), S'(12, 12), T'(4, 2)
fallby
D. art
R(1, 2), S (1,1). T(1, 2)
The coordinates of the vertices of the dilated image, ΔR'S'T' include the following: A. R' (4, 12), S' (12, 12), T' (8, 4).
What is a dilation?In Mathematics and Geometry, a dilation simply refers to a type of transformation which typically changes the size of a geometric object, but not its shape.
This ultimately implies that, the size of the geometric shape would be increased (stretched or enlarged) or decreased (compressed or reduced) based on the scale factor applied.
Next, we would apply a dilation to the coordinates of the pre-image by using a scale factor of 4 centered at the origin as follows:
Ordered pair R (1, 3) → Ordered pair R' (1 × 4, 3 × 4) = R' (4, 12).
Ordered pair S (3, 3) → Ordered pair S' (3 × 4, 3 × 4) = S' (12, 12).
Ordered pair T (2, 1) → Ordered pair T' (2 × 4, 1 × 4) = T' (8, 4).
Read more on dilation and scale factor here: https://brainly.com/question/4421026
#SPJ1
Approximate the area under the graph of f(x)=0.01x⁴ - 1.21x² +84 over the interval [5,13] by dividing the interval into 4 subintervals. Use the left endpoint of each subinterval.
The approximate area under the graph of f(x) = 0.01x⁴ - 1.21x² + 84 over the interval [5, 13] using
What is the area of the rectangle?
To find the area of a rectangle, we multiply the length of the rectangle by the width of the rectangle.
To approximate the area under the graph of the function f(x) = 0.01x⁴ - 1.21x² + 84 over the interval [5, 13] using the left endpoint of each subinterval and dividing it into 4 equal subintervals, we can use the Left Riemann Sum method.
The formula for the Left Riemann Sum is:
LRS ≈ ∑[i=1 to n] f(x_i-1) * Δx
where:
- n is the number of subintervals (4 in this case),
- f(x_i-1) represents the value of the function at the left endpoint of each subinterval,
- Δx is the width of each subinterval, calculated as (b - a) / n, where a and b are the limits of integration.
Given:
f(x) = 0.01x⁴ - 1.21x² + 84
Interval: [5, 13]
Number of subintervals (n): 4
Step 1: Calculate Δx
Δx = (13 - 5) / 4 = 8 / 4 = 2
Step 2: Calculate the Left Riemann Sum
LRS ≈ f(5) * Δx + f(7) * Δx + f(9) * Δx + f(11) * Δx
Now, let's calculate the values of the function at the left endpoints of each subinterval and substitute them into the formula:
LRS ≈ (0.01(5)⁴ - 1.21(5)² + 84) * 2
+ (0.01(7)⁴ - 1.21(7)² + 84) * 2
+ (0.01(9)⁴ - 1.21(9)² + 84) * 2
+ (0.01(11)⁴ - 1.21(11)² + 84) * 2
Simplifying each term:
LRS ≈ (0.01(625) - 1.21(25) + 84) * 2
+ (0.01(2401) - 1.21(49) + 84) * 2
+ (0.01(6561) - 1.21(81) + 84) * 2
+ (0.01(14641) - 1.21(121) + 84) * 2
LRS ≈ (6.25 - 30.25 + 84) * 2
+ (24.01 - 59.29 + 84) * 2
+ (65.61 - 97.01 + 84) * 2
+ (146.41 - 146.41 + 84) * 2
LRS ≈ (60 - 30.25) * 2
+ (48.72) * 2
+ (52.60) * 2
+ (84) * 2
LRS ≈ 29.75 * 2 + 97.44 + 105.20 + 168
LRS ≈ 59.50 + 97.44 + 105.20 + 168
LRS ≈ 430.14
Therefore, the approximate area under the graph of f(x) = 0.01x⁴ - 1.21x² + 84 over the interval [5, 13] using
To learn more about the area of the rectangle visit:
brainly.com/question/2607596
#SPJ4
What is 3a squared if a = -5
\((3a)^2 = [3 (-5)]^2 = (-15)^2 = 225\)
Answer:
225
Step-by-step explanation:
the anser answer are A(250 feet)-(b)150 feet)-c)100 feet)-d(200 feet)
Answer:
(b) 150 feet
Step-by-step explanation:
You want to know the height of a kite at the end of 225 feet of string, flying at an angle of elevation of 45°.
Right triangleThe 45° angle in the given right triangle tells you this is one of the "special" right triangles. Its side lengths have the ratios ...
1 : 1 : √2
where √2 is the hypotenuse.
That means the other two legs of this right triangle are ...
(225 ft)/√2 ≈ 159.099 ft
Rounded to the nearest 50 feet, this is about 150 feet.
__
Additional comment
The sine function relates the angle value to the opposite side:
Sin = Opposite/Hypotenuse
Opposite = Hypotenuse · Sin
height = (225 ft)·sin(45°) = 225 ft/√2 ≈ 159.099 ft
To increase usability in a spreadsheet, use comments, descriptive labels and?
To increase usability in a spreadsheet, you can use comments, descriptive labels, and data validation.
To increase usability in a spreadsheet, you can utilize the following techniques:
1. Comments: Comments allow you to add explanatory notes or instructions within cells. They can provide additional context or clarify the purpose of certain data or formulas. Users can view comments by hovering over the respective cell, making it helpful for collaboration and documentation.
2. Descriptive Labels: Instead of relying solely on cell references or generic labels, use descriptive labels that clearly indicate the purpose of each column, row, or range of cells. This approach enhances readability and makes it easier for users to understand the data and navigate through the spreadsheet.
3. Data Validation: Implement data validation rules to ensure the accuracy and integrity of the data entered into the spreadsheet. Data validation allows you to define constraints or conditions for input, such as numeric ranges, predefined lists, or specific text formats. It helps prevent errors and assists users in entering valid data.
4. Formatting: Properly formatting the cells, columns, and rows can greatly enhance usability. Use consistent formatting for similar types of data, apply color schemes or conditional formatting to highlight important information or trends, and adjust the column widths and row heights to optimize readability.
5. Sheet Organization: Organize the spreadsheet by using multiple sheets if needed. Group related information on separate sheets, and provide clear sheet names that reflect the content or purpose of each sheet. This helps users locate and navigate to specific sections or data within the spreadsheet.
6. Clear Instructions or Documentation: Provide clear instructions or documentation either within the spreadsheet or as separate documentation. Explain the purpose of the spreadsheet, any specific procedures or workflows, and how to interpret the data or use any embedded formulas or macros. This helps users understand the spreadsheet's functionality and ensures consistent usage.
7. Error Handling: Implement error handling mechanisms to provide informative error messages or alerts when users input incorrect or incompatible data. Clear error messages guide users in correcting their input and reduce frustration when dealing with potential errors.
By incorporating comments, descriptive labels, data validation, formatting, sheet organization, clear instructions/documentation, and error handling, you can significantly enhance the usability of your spreadsheet and make it more user-friendly for both yourself and others who interact with it.
To know more about spreadsheet, refer here:
https://brainly.com/question/31511720
#SPJ4
A skyscraper is a rectangular prism with a height of 398 meters. The bases are squares with sides that are 62 meters. What is the surface area of the skyscraper?
Answer:
106,392 meters squared.
Step-by-step explanation:
Surface area of a rectangular prism or cuboid is given by:
SA = 2 (lw + wh + lh)
where:
· l is the length of the cuboid.
· w is the width of the cuboid.
· h is the length of the cuboid.
Here we have h = 398 m, l = w = 62 m because this is a square base.
So we get:
SA = 2 ( 398 · 62 + 62² + 398 · 62)
= 2 (24676 + 3844 + 24676)
= 2 · 53196
= 106392 m²
Given C 3(p-2) 3(2-p) D 1.21 Substitute p = 1 in C and D respectively. Do you get the same answer? Conclusion 1.22 Choose another value for p, except for 2 and substitute in C and D Do you get the same answer? Conclusion:
Answer:
Step-by-step explanation:
A $250 suit is marked down by 10%. Find the sale price.
The sale price is $ (Round to the nearest dollar as needed.)
Answer:
225%
Step-by-step explanation:
250*.1 = 25
250-25=225$
two players, a and b, alternatively toss a fair coin (a tosses the coin first, then b tosses the coin, then a , then b .. .). the sequence o f heads and tails is recorded. i f there is a head followed by a tail (ht subsequence), the game ends and the person who tosses the tail wins. what is the probability that a wins the game?
When two players A and B alternately flip a fair coin, the probability E(T) is 4. (A tosses the coin first, then B tosses the coin, then A, then B and so on).
What is probability?Probability theory, a subfield of mathematics, gauges the likelihood of an occurrence or a claim being true. An event's probability is a number between 0 and 1, where approximately 0 indicates how unlikely the event is to occur and 1 indicates certainty.
Two players, A and B, turn a fair coin in succession (A tosses the coin first, then B tosses the coin, then A, then B and so on). The order of the heads and tails is noted. If there is a head followed by a tail, the game is done, and the person who throws the tail wins (HT sub-sequence).
We must ascertain the game's estimated duration. Allow T coin tosses for the game to proceed. Find E (T).
\(E(T) = first instance of HT in seriesE(T) =0.5×(1+2)+0.5×(1+E(T))\\0.5×E(T)=0.5×4\\E(T) =4\)
As a result, when two players A and B alternately flip a fair coin, The E(T) is 4. (A tosses the coin first, then B tosses the coin, then A, then B and so on).
To know more about probability visit:
https://brainly.com/question/11234923
#SPJ4
Let C=D={-3, -2, -1, 1, 2, 3} and define a relation S from C to D as follows: For all
( x , y ) \in C \times D
(x,y)∈C×D
.
( x , y ) \in S
(x,y)∈S
means that
\frac { 1 } { x } - \frac { 1 } { y }
x
1
−
y
1
is an integer. a. Is 2 S 2? Is -1S-1? Is (3, 3)
\in S ?
∈S?
Is (3, -3)
\in S ?
∈S?
b. Write S as a set of ordered pairs. c. Write the domain and co-domain of S. d. Draw an arrow diagram for S.
Answer:
Step-by-step explanation:
I'm pretty
a. Let's check whether the given pairs are in the relation S or not.
Is 2 S 2?
To check if (2, 2) is in S, we need to evaluate the expression:
(1/2) - (1/2) = 1/2 - 1/2 = 0
Since 0 is an integer, (2, 2) is in S.
Is -1 S -1?
To check if (-1, -1) is in S, we need to evaluate the expression:
(1/-1) - (1/-1) = -1 - (-1) = 0
Since 0 is an integer, (-1, -1) is in S.
Is (3, 3) ∈ S?
To check if (3, 3) is in S, we need to evaluate the expression:
(1/3) - (1/3) = 1/3 - 1/3 = 0
Since 0 is an integer, (3, 3) is in S.
Is (3, -3) ∈ S?
To check if (3, -3) is in S, we need to evaluate the expression:
(1/3) - (1/-3) = 1/3 + 1/3 = 2/3
2/3 is not an integer, so (3, -3) is not in S.
b. Set of ordered pairs S:
S = {(x, y) | (1/x) - (1/y) is an integer}
S = {(2, 2), (-1, -1), (3, 3)}
c. Domain and Co-domain of S:
Domain of S: The set of all first components (x-values) of the ordered pairs in S.
Domain of S = {-3, -2, -1, 1, 2, 3}
Co-domain of S: The set of all second components (y-values) of the ordered pairs in S.
Co-domain of S = {-3, -2, -1, 1, 2, 3}
d. Arrow diagram for S:
Domain (C): {-3, -2, -1, 1, 2, 3}
Co-domain (D): {-3, -2, -1, 1, 2, 3}
(2, 2) -----> (0) // 0 represents an integer
(-1, -1) -----> (0)
(3, 3) -----> (0)
(3, -3) -----> (2/3) // 2/3 is not an integer
Note: The arrow diagram helps visualize the mapping of elements from the domain to the co-domain based on the relation S. Arrows point from the element in the domain to the result of the expression (integer or not integer) in the co-domain.
To know more about integer here
https://brainly.com/question/929808
#SPJ2
can you solve this i cant please help
Answer:
1 2/3m
Step-by-step explanation:
Hope it helps!
Answer:
1 2/3 m
Step-by-step explanation:
simply add the two terms
2 + (-1/3) = 1 2/3
a random sample of 1000 people was taken. four hundred fifty of the people in the sample favored candidate a. what is the upper limit for a 95% confidence interval for the true proportion of people who favored candidate a? round your answer to three decimal places.
The 95% confidence interval for the true proportion of people who favored candidate a is 0.419, 0.481
How to calculate confidence interval?
First, calculate sample proportion by divide number people who favored candidate by number of sample. So:
\(\pi\) = 450 / 1,000 = 0.45
Then we use the formula for confidence interval
\(\pi\) ± \(z\sqrt{\frac{\pi (1-\pi )}{n}}\)
In which z is z score that has a p value of \(1 - \frac{\alpha }{2}\)
For 95% confidence interval z is the value of Z that has a p value of \(1 - \frac{0.05}{2}\) = 0.975, so z = 1.96
After we have \(\pi\) value and z value then put it in the formula. So:
= 0.45 ± \(1.96\sqrt{\frac{0.45(1-0.45)}{1000} }\)
= 0.45 ± 0.0308
= 0.419, 0.481
Thus, the 95% confidence interval for the true proportion of people who favored candidate a is 0.419, 0.481
Learn more about confidence interval here:
brainly.com/question/24131141
#SPJ4
Someone could help me with problem 3-75 (b) please
Answer:
a. is correct
b. not correct
c. not correct
d. is correct
Step-by-step explanation:
3-75:
a) 3x + 7 = x - 1
Subtract 7 on both sides to get 3x = x - 8, then subtract x from 3x to get 2x = -8, finally divide 2 on both sides to get x = -4. (Answer is yes)
b) -2x - 4 = -4x + 3
Add 4 on both sides to get -2x = -4x + 7, then add 4x to -2x to get 2x = 7, finally divide 2 on both sides to get x = 7/2. (Answer is no)
c) -3x + 5 + 5x - 1 = 0
Add 1 on both sides to get -3x + 5 + 5x = 1, then subtract 5 on both sides to get -3x + 5x = -4, next combine -3x and 5x together to get 2x = -4, finally divide 2 on both sides to get x = -2. (Answer is no)
d) -(x - 1) = 4x - 5 - 3x
Combine 4x and -3x together to get
-(x - 1) = x - 5, then add (x - 1) and (x - 5) together to get 2x - 6, next do 2x - 6 = 0 and solve for x, by adding 6 on both sides to get 2x = 6, and finally dividing 2 on both sides to get x = 3. (Answer is yes)
Explanation:
I did the whole 3-75 section for you, but I didn't really understand 3-76, and my brain was already hurting by the time I got to section 3-77, sorry.
Hope this helps though, I did my best :)
Please help it’s timed
Answer:
50 (b)
Step-by-step explanation:
It's an acute angle
If you have a relationship such that h=a t . which choice of the variables will get you a straight line (more than one possibility may be true)?
To obtain a straight line relationship in the equation h = a * t, you need to consider the choices of variables that result in a linear equation. In this equation, h represents the dependent variable (y-axis) and t represents the independent variable (x-axis). Here are the choices of variables that will give you a straight line relationship:
If a is a constant and does not vary with t, then the equation represents a straight line. In this case, as t increases or decreases, h will change linearly, resulting in a straight line on a graph.
If h and t are directly proportional, meaning that the ratio h/t remains constant, then the equation will represent a straight line. This implies that for each increase or decrease in t, h will change by the same proportion.
It's important to note that in both cases, a constant value of a or a direct proportionality between h and t will result in a linear relationship. Any other variations or nonlinear relationships between a and t may not yield a straight line.
To learn more about constant : brainly.com/question/31730278
#SPJ11
How many (and of what nature) roots does the function have?
Step-by-step explanation:
(x+1) (x+4)
x * x make x^2
1 & 4 when multiplied make 4 and when added make 5
5. Domingo earns $13 dollars per hour and worked 47.5 hours that week. He is paid
double time for all hours worked over 40 hours in one week. What is his gross pay
for the week?
Answer:
$715
Step-by-step explanation:
$13 x 40 hours = $520
47.5 hours - 40 hours = 7.5 overtime hours
2 x $13 = $26 per overtime hour
$26 x 7.5 = $195
$520 + $195 = $715
Which ratio is equivalent to 4 to 5?
Answer: 8 to 10, 16 to 25, 40 to 50
Step-by-step explanation: If you have trouble wit this in the future just multiply each number by 2,3,4,5,6...
Answer:
Two are actually equivalent, 8:10 and 12:15
Make a statement in ordinary English that describes the complement of the event (do not simply insert the word not) in the role of a standard number cube: five or more
The complement of the event "five or more" in the role of a standard number cube is "less than five."
A standard number cube, also known as a six-sided die, has six equally likely outcomes, which are the numbers 1, 2, 3, 4, 5, and 6. When we talk about the event "five or more," we are referring to the outcomes that are five or greater, namely 5 and 6.
The complement of an event includes all the outcomes that are not part of the event. In this case, the complement of "five or more" would be all the outcomes that are less than five, which are 1, 2, 3, and 4.
To understand this concept in ordinary English, we can think of it as the opposite or opposite condition of the event. In this case, the event "five or more" represents the favorable outcomes we are interested in, and the complement represents the unfavorable outcomes.
So, if someone asks you to describe the complement of the event "five or more" when rolling a standard number cube, you can say that it refers to the outcomes that are "less than five." This means that if you roll the number cube, the complement event occurs when you get a number that is less than five, specifically 1, 2, 3, or 4.
Understanding the complement of an event is useful in probability calculations, as it allows us to determine the probability of the complement event by subtracting the probability of the original event from 1.
To learn more about complement, click here: brainly.com/question/3432098
#SPJ11
A bag contains 6 red marbles, 2 blue marbles and 5 green marbles. If two marbles are drawn out of the bag, what is the probability, to the nearest 1000th, that both marbles drawn will be red?
The probability of choosing a red marble, then a red marble is 0.192
Finding the probability of choosing both red marblesFrom the question, we have the following parameters that can be used in our computation:
A bag contains 6 red, 2 blue, and 5 green marbles
If the marbles were not replaced, then we have
P(Red) = 6/13
P(Second Red) = 5/12
So, we have
The probability of choosing a red marble, then a red marble is
P = 6/13 * 5/12
Evaluate
P = 0.192
Hence, the probability of choosing two red marbles is 0.192
Read mroe about probability at
brainly.com/question/24756209
#SPJ1
In a kickball game, a ball is kicked and travels along a parabolic path. The height h, in feet, of the kickball t seconds after the kick can be modeled by the equation h(t) = −16 t2 + 24t .
a. A fielder runs a route that will allow him to catch the kickball at about 3 ft above the ground. Write an equation that can be used to find when the fielder will catch the ball.
b. Use graphing technology to find out how long the kickball has been in the air when the fielder catches it on its descent. Round to the nearest hundredth.
Answer:
(a) h(t) = 3
(b) time = 1.36 seconds
Explanation:
equation: h(t) = -16(t)² + 24t
Part AIf the fielder catches the ball at the height of about 3 ft.
equation: h(t) = 3Part Busing graphing technology, graphed below. (height, y = 3)
Additional *solving part B algebraically*
-16(t)² + 24t = 3
-16(t)² + 24t - 3 = 0
using quadratic equation
\(\bold{x = \frac{ -b \pm \sqrt{b^2 - 4ac}}{2a} \ when \ ax^2 + bx + c = 0}\)
==================================
\(\sf t_{1,\:2}=\frac{-24\pm \sqrt{24^2-4\left(-16\right)\left(-3\right)}}{2\left(-16\right)}\)
\(\sf t=\frac{3-\sqrt{6}}{4}, \ t=\frac{3+\sqrt{6}}{4}\)
t = 1.36 seconds and 0.14 seconds
The fielder shall catch the ball when the ball is falling, so time : 1.36 s
Answer:
See below ~
Step-by-step explanation:
a. Equation
In place of h(t), substitute 3 in its place3 = -16t² + 24tRearrange by bringing 3 to the other side-16t² + 24t - 3 = 0b. Finding the duration of the kickball in air using graphing technology
Based on the graph (attached), the ball has been in the air for :1.5 seconds
The distance from the earth to the sun is 1.5 extend eight KM and the distance from Mars to the sun is 2.2 8 X 10 eight KM what is the distance between earth and mars expressed in scientific notation
The distance between the Earth and the Sun is 1.5 extend eight kilometers, and the distance between Mars and the Sun is 2.2 8 X 10 eight kilometers. The scientific notation for the distance between Earth and Mars is 3.78 x 10^8 km.
How to find a distance?The length of the line connecting two points is the distance between them. If the two points are on the same horizontal or vertical line, the distance can be calculated by subtracting the non-identical coordinates.
Distance is defined as an object's total movement without regard for direction. Distance can be defined as how much ground an object has covered regardless of its starting or ending point.
Given,
The distance between Earth and Sun = 1.5 x 10^8 km
The distance between Sun and Mars = 2.28 x 10^8 km
Therefore the distance between Earth and Mars =
(1.5 x 10^8 + 2.28 x 10^8) km
= (1.5 + 2.28) x 10^8 km
= 3.78 x 10^8 km (Ans)
To learn more about decimal addition, refer to:
https://brainly.com/question/19127052
#SPJ10
A firm experiences_______ if inputs are doubled and output more than doubles. diminishing marginal rate of technical substitution diminishing marginal product decreasing returns to scale increasing returns to scale
A firm experiences increasing returns to scale if inputs are doubled and output more than doubles.
When the firm's output grows at a faster rate than the growth in inputs, increasing returns to scale result. In this case, the company experiences economies of scale, which makes it more effective as it grows its production.
The firm is able to boost productivity and efficiency as it expands its scale of operations if inputs are doubled and output more than doubles.
This can be ascribed to a number of things, including specialisation, labour division, the use of capital-intensive technology, discounts for bulk purchases, and spreading fixed costs over a higher output. Lower average costs per unit of output result in higher profitability and competitiveness for the company.
The firm gains a number of benefits from growing returns to scale. First off, it lets the company to benefit from cost savings brought about by economies of scale, allowing it to manufacture goods or services for less money per unit. This may enable more competitive pricing on the market or result in larger profit margins.
Second, raising returns to scale can result in better operational effectiveness and resource utilisation. As the company grows in size, it will be able to use resources more wisely and profit from production volume-related synergies.market prices that are competitive.
For more such question on doubled visit:
https://brainly.com/question/30599213
#SPJ8
Two ants are walking from the same point of the tree at the same time. One travelled 13 cm upward and another travelled 17 cm downward. What is the total distance travelled by both the ants? Find it.
Answer:
30 cm
Step-by-step explanation:
This question asks for the total distance travelled by both ants combined. Regardless of the direction they travelled, the ants' distance travelled together(13 + 17) is 30 centimeters total.
Hope this helps!
A number of squares are connected in a row to form a rectangle. The table shows the relationship between the number of squares, x, and the perimeter, y, of the rectangles they form. Select all the true statements about this relation.
The true statements are the equation of the function is y=4x+4, the relation is a function, the graph is linear.
The equation of the function start by calculating the slope (m)
The slope formula is used to calculate the inclination or steepness of a line. It finds application in determining the slope of any line by finding the ratio of the change in the y-axis to the change in the x-axis. The slope of a line is defined as the change in the "y" coordinate with respect to the change in the "x" coordinate of that line.
The formula to calculate slope is given as,
\(m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)where, m is the slope of the line, x1, x2 are the coordinates of the x-axis, and y1, y2 are the coordinates of the y-axis.
m=\(\frac{12-8}{2-1}=4\)
m=4
The equation is then calculated as:
y=m\((x-x_{1})+y_{1}\)So, we have
y=4(x-1)+8
y=4x-4+8
y=4x+4
Therefore, the equation is 4x+4. Hence the statement is true.
(b) The graph is nonlinear.
A linear function forms a straight line when it is plotted on a graph. A nonlinear function does not form a straight line (it is curved in some way). The slope of a linear function is constant, whereas the slope of a nonlinear function is continuously changingBecause of (a) above, the graph is linear.
(c) The relation is a function
A linear relation is a relationship or connection between two variables that will produce a straight line when graphed. There will be times when the data points are scattered and do not form an absolutely straight line. When it appears that the scattered points resemble a straight line,
Hence, the given relation is function then the statement is true.
Therefore, the equation of the function is y=4x+4, the relation is a function, the graph is linear.
For more such questions on linear equation.
https://brainly.com/question/21835898
#SPJ4
Number of squares(x) Perimeter(y)
1 8
2 12
3 16
4 20
Complete Question: What is the relationship between the number of squares, x, and the perimeter, y, of the rectangles they form?
Answer: The relationship between the number of squares, x, and the perimeter of the rectangles can be expressed as a y = 5.1%x. This equation states that for every one square, the perimeter will increase by 5.1%.
To calculate the perimeter of a rectangle with x number of squares, the following calculation can be used: y = 5.1%x = 0.051x. This equation can be rearranged to solve for x: x = y/0.051.
For example, if the perimeter of the rectangle is 10, the number of squares, x, can be calculated as follows: x = 10/0.051 = 196.08. This indicates that the rectangle will have 196 squares.
Therefore, the relationship between the number of squares, x, and the perimeter, y, of the rectangles they form can be expressed as y = 5.1%x, or x = y/0.051.
Learn more about perimeter of a rectangle here :
https://brainly.com/question/29595517
#SPJ4
9) You are a contractor and charge $55 for a site visit plus an additional $25 per hour for each hour you spend
working at the site, Write and solve an equation to determine how many total hours you have to work to earn
$555 working at a site.
Okay
The contractor would have to work for 20 hours on the site to earn $555 total pay
What is total cost function?
Total cost function is the sum of the fixed charge, which is fixed cost to the person paying the contractor when the contractor visits the site and charge per hour multiplied by the number of hours spent working
TC=a+bX
TC=total cost=$555
a=fixed charged=$55
b=charge per hour=variable element of contractor's pay=$25
X=number of hours spent working=unknown
$555=$55+$25X
$555-$55=$25X
$500=$25*X
X=$500/$25
X=20
The contractor needs to work for 20 hours in order to earn a total pay of $555
Find out more about fixed and variable cost on:https://brainly.com/question/9212451
#SPJ4
please help asap for a final
Amy will choose between two restaurants to purchase pizzas for her party. The first restaurant charges a delivery fee of $6 for the entire purchase and $13 per pizza. The second restaurant has no delivery fee and charges $16 per pizza.
Amy will choose the second restaurant to purchase pizza. Because the second one is cheaper.
What is addition?Combining objects and counting them as one big group is done through addition. In arithmetic, addition is the process of adding two or more integers together. Addends are the numbers that are added, and the sum refers to the outcome of the operation.
Given,
the first restaurant charges a delivery fee of $6 for the entire purchase and $13 per pizza.
The second restaurant has no delivery fee and charges $16 per pizza.
And Amy will choose between two restaurants to purchase pizzas for her party.
The cost of one pizza of the first restaurant:
Cost = delivery fee + price of one pizza
= $6 + $13
= $19
The cost of one pizza of the second restaurant:
Cost = delivery fee + price of one pizza
= $0 + $16
= $16
And 16< 19
The second restaurant is cheaper.
Therefore, Amy will choose the second restaurant to purchase pizza.
To learn more about the addition;
brainly.com/question/29464370
#SPJ1
a department store sold 20% of the dress they had in stock. After the sale they had 60 dresses left. What was the original number of dresses before the sale?
Answer:
original number of dresses were 75 dresses.
Step-by-step explanation:
remaining dresses = original dresses - sale dresses
so remaining dresses = 100% - 20% = 80%
80% ---> 60 dresses
1% ---> (60/80) dresses
100% ---> [(60/80)*100] = 75 dresses.
Let f(x) = (x + 7)^2 Find a domain on which f is one-to-one and non-decreasing. Find the inverse of f restricted to this domain
The function f(x) = (x + 7)^2 is one-to-one and non-decreasing for any domain on the real numbers. The inverse of f(x) restricted to this domain is y = √x - 7.
To find a domain on which the function f(x) = (x + 7)^2 is one-to-one and non-decreasing, we need to determine where the function is strictly increasing or non-decreasing and has a one-to-one correspondence.
First, let's examine the graph of f(x) = (x + 7)^2 to understand its behavior. The function is a parabola that opens upward, centered at x = -7, and the vertex is the lowest point on the graph.
Since the vertex is the lowest point and the parabola opens upward, the function is non-decreasing for all x-values. Therefore, the function is non-decreasing over its entire domain.
To find a domain on which the function is one-to-one, we observe that the function is not symmetric about the y-axis. Hence, the domain can be any subset of the real numbers.
Now, let's find the inverse of f(x) restricted to this domain. Since f(x) is non-decreasing, the inverse will also be non-decreasing. The inverse function can be found by interchanging the roles of x and y in the original equation and solving for y.
Let's proceed with finding the inverse:
Start with the equation f(x) = (x + 7)^2.
Interchange x and y: x = (y + 7)^2.
Solve for y:
Take the square root of both sides: √x = y + 7.
Subtract 7 from both sides: y = √x - 7.
The inverse function of f(x) restricted to any domain on which it is one-to-one and non-decreasing is given by y = √x - 7.
Note that the domain can be any subset of the non-negative real numbers, since the square root function is defined only for non-negative values.
In summary, the function f(x) = (x + 7)^2 is one-to-one and non-decreasing for any domain on the real numbers. The inverse of f(x) restricted to this domain is y = √x - 7.
Learn more about real numbers here
https://brainly.com/question/155227
#SPJ11