Answer:
The answer is 4 hours and 49 minutes
Step-by-step explanation:
Q(3x)=12x+2 then what is Q(x-2)
Answer:
it's ax+b form answer is Q(x-2)=4x-6
Step-by-step explanation:
ax+b=Q(x),Q(x-2)=a(x-2)+2
Q(3x)=a(3x)+b=12x+2, 3a=12 =>a=4,b=2
the original q of x is 4x+2
Q of x-2 =4(x-2)+2=4x-8+2=4x-6
can someone help me solve this please :)
Answer:
Step-by-step explanation:
The altitude (i.e., height) of a triangle is increasing at a rate of 1.5 cm/minute while the area of the triangle is increasing at a rate of 3.5 square cm/minute. At what rate is the base of the triangle changing when the altitude is 10 centimeters and the area is 86 square centimeters? The base is changing at cm/min.
Answer:
-1.88cm/min
Step-by-step explanation:
Given
dh/dt = 1.5cm/min
dA/dt = 3.5cm²/min
Height h = 10cm
Area A = 86cm²
Required
db/dt
b is the base
h is the height.
Area of a triangle A = 1/2bh
dA/dt = dA/db•db/dt + dA/dh •dh/dt
dA/db = h/2 = 10/2 = 5cm
Get the base
86 = 1/2(10)b
5b = 86
b = 17.2cm
dA/ dh = 1/2b = 1/2(17.2)
dA/dh = 8.6cm
.substitute given values into the formula above;
dA/dt = dA/db•db/dt + dA/dh •dh/dt
3.5 = 5 db/dt + 8.6(1.5)
3.5 = 5 db/dt + 12.9
5 db/dt = 3.5-12.9
5 db/dt = -9.4
db/dt = -9.4/5
db/dt = -1.88cm/min
Hence the base is changing at -1.88cm/min
A media personality argues that global temperatures are not rising because every year an increase is reported such as 0.09 degrees Celsius. The difference from the previous year is less than the margin of error of about 0.13 degrees C, so that difference should be ignored. What is the best counterargument?
The media personality's argument is flawed because they are basing their conclusion on a single year's data and ignoring the overall trend of increasing global temperatures. To counter this argument, one can make the following points:
1. While it is true that the annual increase in temperature may be less than the margin of error, the trend of increasing temperatures over several decades cannot be ignored. The margin of error is a statistical concept that takes into account the uncertainty in the measurement, but it does not negate the overall trend.
2. Global temperature records show that the Earth's temperature has been steadily rising over the past century, with the 10 warmest years on record occurring since 2005. This trend cannot be explained by natural variability alone and is consistent with the effects of human-caused climate change.
3. The consequences of rising global temperatures, such as melting glaciers, rising sea levels, and more frequent extreme weather events, are already being felt around the world. Ignoring this trend could have devastating consequences for future generations.
In summary, the media personality's argument is based on a flawed understanding of statistics and ignores the overall trend of increasing global temperatures. The best counterargument is to highlight the overwhelming evidence of climate change and its potential consequences.
10.) Which equation below represents the model? A. m - 11 = 43 B. 11m = 43 C. m + 11 = 43 D. m + 43 = 11.) What is the value of m? A. m = 32 B. m = 54 C. m = 4 D. m = 29 Use the model below to answer questions 12 and 13. С -8 -14
Answer:
A
Step-by-step explanation:
m - 11 = 43
based on the graph how many tiles are im figure 0
For figure {0}, the number of tiles will be equal to 2.
What is a mathematical function, equation and expression?Function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function
Expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators
Equation : A mathematical equation is used to equate two expressions.
Given is a graph as shown in the image.
The line passes through point -
(3, 8) and (4, 10)
So, the slope of the line will be -
m = (10 - 8)/(4 - 3)
m = 2
y = 2x + c
For the point (3, 8), we can write -
8 = 6 + c
c = 2
For figure {0}, the number of tiles will be equal to 2.
Therefore, for figure {0}, the number of tiles will be equal to 2.
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the bottom angle is also 45 could some one answer this for me
The length of the side opposite to the reference angle is 7.77 units.
What are trigonometric ratios in terms of a right-angle triangle?We know a right-angled triangle has three sides they are -: Hypotenuse,
Opposite and Adjacent.
We can remember SOH CAH TOA which is,
sin = opposite/hypotenuse, cos = adjecen/hypotenuse and
tan = opposite/adjacent.
If we take the reference angle 45°, The side 'x' is opposite and the side having a length of 11 units is the hypotenuse.
We know, sin = opposite/hypotenuse.
Therefore,
sin45° = x/11.
1/√2 = x/11.
x = 11/√2.
x = 7.77 units.
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Danielle said she read 1/2 of a book select all the fractions that are equivalent to 1/2
Math Homework: Unit 3 Assignment
The base area of a swimming pool is 192m³.the Dept of the swimming pool is 1.8cm.find the volume of the water the swimming pool can hold. please answer as soon as possible and please follow ❣️
The swimming pool can hold a volume of 3.456 cubic meters of water.
The volume of water that the swimming pool can hold can be calculated by multiplying the base area of the pool by its depth. In this case, the base area is given as 192 m² and the depth is 1.8 cm.
However, it is important to note that the depth should be converted to meters before performing the calculation.
To convert 1.8 cm to meters, we divide it by 100 (since there are 100 centimeters in a meter):
Depth = 1.8 cm ÷ 100 = 0.018 m
Now we can calculate the volume of water using the formula:
Volume = Base Area × Depth
Substituting the given values, we get:
Volume = 192 m² × 0.018 m = 3.456 m³
Therefore, the swimming pool can hold a volume of 3.456 cubic meters of water.
In the explanation, we use the formula for calculating the volume of a rectangular prism, which is given by multiplying the base area by the depth. We convert the depth from centimeters to meters and then substitute the given values into the formula to find the volume of water that the swimming pool can hold, which is 3.456 cubic meters.
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Please help me !!!!!!
Answer:
200 step by step
Step-by-step explanation:
Which statement about a quadrilateral is true?
Responses
A. All rectangles are squares.
B. A rhombus has exactly one pair of parallel sides.
C. A trapezoid has two pairs of parallel sides.
D. Some rhombuses have four right angles.
The statement which is true about the quadrilateral is D. Some rhombuses have four right angles.
Quadrilaterals are four sided polygons which also have four vertices and four angles.
Sum of all the interior angles of a quadrilateral is 360 degrees.
Rectangles, squares, trapezium, parallelogram, rhombus are all quadrilaterals.
A. All squares are rectangles but all rectangles are not squares, since for squares, all sides need to be equal.
But for a rectangle, opposite sides only need to be equal.
B. A rhombus has all the sides equal and opposite sides are parallel.
So there are 2 pairs of parallel sides.
C. A trapezoid can have only one pair of sides parallel.
D. Some rhombuses have four right angles.
This is true since square is a rhombus and it has 4 right angles.
Hence the true option is D.
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Can someone please help me with question 5 and 6 Please
Answer:
x=36
y=54
Step-by-step explanation:
tan(x) = 15/21
x=tan^-1(15/21)
x=35.537677792
x~36
To solve for y, either repeat the same process:
tan(y)=21/15
y=tan^-1(21/15)
y=54.462322208
y~=54
OR
180-90-x=y
180-90-36=54
y=54
Write an equation of the line perpendicular to line MN that goes through point Q.
Francisco has solved the problem for you, but made a mistake.
Find the error in the work and correct the mistake. Show your work for full credit.
Francisco’s work:
Step 1: Slope of MN: 1/4
Step 2: Slope of the line perpendicular: 4
Step 3: y - y = m(x - x) Q(6, -2)
y - (- 2) = 4 (x - 6)
Step 4: y + 2 = 4x - 24
Step 5: y + 2 - 2 = 4x - 24 - 2
Step 6: y = 4x - 26
Step completed incorrectly: ___
(I believe the step completed incorrectly is 2? But I’m not very sure on the showing my work part as well.)
Answer:
Step completed incorrectly: 2
Correct Answer: y = -4x + 22
Step-by-step explanation:
The graph is a straight line through points M(4, -1) and N(8, 0). Point Q is located at (6, -2).
To calculate the slope of the line, substitute the points into the slope formula:
\(\textsf{Slope $(m)$}=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{0-(-1)}{8-4}=\dfrac{1}{4}\)
Therefore, the slope of MN is 1/4, so step 1 of Francisco's calculations is correct.
If two lines are perpendicular to each other, the slopes of these lines are negative reciprocals. The negative reciprocal of a number is its negative inverse.
The negative reciprocal of 1/4 is -4.
Therefore, the slope of the perpendicular line is -4.
So Francisco has made an error in his calculation in step 2 by not making the perpendicular slope negative.
Corrected work
\(\textsf{Step 1:} \quad \sf slope\;of\;MN:\; \dfrac{1}{4}\)
\(\textsf{Step 2:} \quad \sf slope\;of\;the\;line\;perpendicular:\; -4\)
\(\begin{aligned}\textsf{Step 3:} \quad y-y_1&=m(x-x_1)\;\; \sf Q(6,-2)\\y-(-2)&=-4(x-6)\end{aligned}\)
\(\textsf{Step 4:} \quad y+2=-4x+24\)
\(\textsf{Step 5:} \quad y+2-2=-4x+24-2\)
\(\textsf{Step 6:} \quad y=-4x+22\)
Therefore, step 2 has been completed incorrectly.
The correct answer is y = -4x + 22.
What is the smallest three-digit number that is divisible by 3? Explain how you know without multiplying or dividing.
ssions with Exponents Quiz - Level F
1) Trey's grandmother stores her picture frames in a box. Each side of the box is 20 inches long.
Trey wants to know the volume of the box.
What is the volume of a box with side
lengths that are 20 inches? Use the formula
V = 83, where s is the length of one side.
400 in.
800 in.
20 in.
2,400 in.
8,000 in.
20 in.
20 in.
Answer:
8000 inv^3
Step-by-step explanation:
The table below shows the number of marbles of each color sold in a single box. There are a total of 25 marbles in the box.
Marbles in the Box
Color
Number
red
11
blue
11
green
3
The likelihood of an event occurring may be described as being certain, more likely, equally likely, less likely, or impossible
We will find the probability of getting each color of marble, and we will see that getting red and blue is equally likely, while getting green is less likely.
How to find the probabilities for each color of marble?
If we draw a marble at random from the box, all of them will have the same probability of being drawn.
Then the probability of getting a given color is given by the quotient between the number of marbles of that color and the total number of marbles.
Probability of getting red:
P = 11/25 = 0.44 This is really close to 50%, so this is equally likely.
Probability of getting blue:
P = 11/25 = 0.44 This is really close to 50%, so this is equally likely.
Probability of getting green:
P = 3/25 = 0.12 This is really close to 0%, so this is less likely.
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Because of a problem in the program, the timer in a video player did not begin counting until the video had been playing for several seconds. The player began counting at 000 seconds, even though the video had already played 190190190 frames. The video plays 252525 frames per second.
How many frames had the video already played when the time was equal to -3 2/5 seconds?
The video had played 104 frames when the time was equal to -3 2/5 seconds.
We can start by finding how many frames were played during the time that the timer did not start counting. Since the video plays 25 frames per second, the number of frames played during this time is 25 frames/second × several seconds = 190 frames.
Next, we need to convert the time of -3 2/5 seconds to frames. We can do this by multiplying the time by the frame rate of 25 frames/second:
-3 2/5 seconds × 25 frames/second = -86 frames
Note that the negative sign indicates that the timer is behind the actual playback time.
Finally, we add the number of frames played before the timer started counting to the number of frames that had played by the time the timer was at -3 2/5 seconds:
190 frames + (-86 frames) = 104 frames
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Jackie has three pieces of ribbon Two of the pieces are q.75 inches in length and the other piece is 6.8 inches long. What is the combined length of Jackie's ribbons?
Answer:
7.55 inches
Step-by-step explanation:
Add the two values together:
0.75 + 6.8 = 7.55
The combined length of Jackie's ribbons is 7.55 inches!
what is the value of k that makes the equation (4x^2y^2+5xy+k)+(kx^2y^2-2xy-6)=7x^2+kxy-3
Answer:
k=7x^(2)-4x^(2)y^(2)-3xy+3
x^(2)y^(2)-xy
pretend the underline is like the line for a fraction/ division
Step-by-step explanation:
let y1,y2 be independent random variables both having the uniform(0,1) distribution. re- call that the density function and distribution function of a uniform random variable y
A uniform random variable's density function is f(y) = 1 for y 1 and 0 otherwise. F(y) = 0 for y 0, F(y) = y for 0 y 1, and F(y) = 1 for y > 1 define the distribution function.
A uniform random variable's density function is f(y) = 1 for y 1 and 0 otherwise. Accordingly, the likelihood of any specific outcome of y is the same, and the likelihood of any range of outcomes is equal to the length of the range. F(y) = 0 for y 0, F(y) = y for 0 y 1, and F(y) = 1 for y > 1 define the distribution function. Accordingly, the length of the range multiplied by the likelihood of any specific occurrence yields the cumulative probability of any range of outcomes. Since the likelihood of any specific result in that range is 1 and the range's length is 0.5, for instance, the cumulative probability of 0 y 0.5 is 0.5. Since the likelihood of any given result within that range is still 1, but the range's length is 0.5, the cumulative probability of 0.5 y 1 is 0.75. The chance of any range of outcomes for y1 and y2 if they are independent random variables both having the uniform(0,1) distribution is just the sum of their respective cumulative probabilities.
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On a coordinate plane, point B is at (0, 0), point A is at (0, 9), point C is at (3, 6), and point D is at (7, 0).
Which statements are true? Select all that apply
Point B is at the origin.
Point D is on the x-axis.
Point D is on the y-axis.
Point A is on the x-axis.
Point A is on the y-axis.
Point C is located at (6, 3).
Point C is located at (3, 6).
Answer:
here you go! i hope i could help :)
Step-by-step explanation:
Suppose you roll a die 5 times. What is the probability of getting at least one odd number ?
Answer: 1/2 or 50%
Step-by-step explanation:
A dice has 6 numbers; 1,2,3,4,5,6
3 of which are odd numbers
which means:
p(event)= number of favorable outcomes/ number of possible outcomes
p(odd)=3/6
3/6=1/2 or 50%
Simplify the expression.
Cos x csc x tan x
a.
-1
c.
1
b.
0
d.
Answer:
1
Step-by-step explanation:
See attached image for explanation.
Answer:
Choice C
1Step-by-step explanation:
Appropriate Question:
cos x * csc x * tan xSolution:
Rewrite csc x as
cos x * 1/sin(x) * tan xSolving through the laws:
\( \cfrac{ \cos(x) }{ \sin(x) } \times \tan(x) \)\( \cfrac{ \cos(x) }{ \sin(x) } \times \cfrac{ \sin(x)}{ \cos(x)} \)Canceling them;we have
\( \cfrac{ \cancel{ \cos(x)} }{ \cancel{ \sin(x)} } \times \cfrac{ \cancel{\sin(x)}}{ \cancel{ \cos(x)}} \)\(\boxed{1}\)Choice C is accurate.
Lets find the square of the no. from 1 to 10. Then observe the digits at one's place of each square no. what did you notice Write a short note.
The observation of the pattern is discussed below.
When we calculate the squares of the numbers from 1 to 10 and observe the digits at the one's place of each square, we notice a pattern:
1²=1
2²=4
3²=9
4²=16
5²=25
6²=36
7²=49
8²=64
9²=81
10²=100
If we focus on the digits at the one's place, we can see that they form a repeating pattern: 1, 4, 9, 6, 5, 6, 9, 4, 1, 0. This pattern repeats itself as we calculate the squares of higher numbers.
This observation is known as the "digit at one's place pattern" or the "units digit pattern." It occurs because the square of any number depends only on the digit at the one's place of that number. Hence, when we square numbers that have the same digit at the one's place, we get the same digit at the one's place in the result.
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Mira has breakfast at a restaurant. She leaves a 20% tip of $1.80.
What is the price of Mira's breakfast, before tip?
Answer:
$1.44
Step-by-step explanation:
1.80x20%
Answer:
$ 1.44
Step-by-step explanation:
Multiply 1.80 and 20%
A contractor better job at $750 for materials plus $43 per hour for labor. The total cost for the job can be modeled by C= 43H+ 750$.
Find the number of hours that he has for the job if the owner would like the total cost to be under $2000, rounded to the nearest hour.
The contractor has a maximum of 29 hours (rounded down) to complete the job while keeping the total cost under $2000.
To find the number of hours the contractor has for the job while keeping the total cost under $2000, we can use the given cost model equation: C = 43H + 750.
Since the owner wants the total cost to be under $2000, we can set up the inequality:
43H + 750 < 2000
Now, let's solve this inequality for H, the number of hours:
43H < 2000 - 750
43H < 1250
Dividing both sides of the inequality by 43:
H < 1250/43
To determine the maximum number of hours the contractor has for the job, we need to round down the result to the nearest whole number since the contractor cannot work a fraction of an hour.
Using a calculator, we find that 1250 divided by 43 is approximately 29.07. Rounding down to the nearest whole number, we get:
H < 29
Using the cost model equation C = 43H + 750, where C represents the total cost and H represents the number of hours, we set up the inequality 43H + 750 < 2000 to satisfy the owner's requirement of a total cost under $2000.
By solving the inequality and rounding down to the nearest whole number, we find that the contractor has a maximum of 29 hours to complete the job within the specified cost limit.
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i need this answer hurry ???
Answer:
240
Step-by-step explanation:
Answer:
x = 16
Step-by-step explanation:
Use Pythagorean Theorem \(20^{2} = 12^{2} +x^{2}\)
Solve for x and you get 16.
what additional information is needed to show that abc def by asa
To prove congruence using SAS Theorem, you must understand that pairs of two angles are congruent as well as the pair of sides that are next to one of the specified angles.
What is triangle?In Euclidean geometry, any three points that are not collinear produce a singular triangle and a singular plane (i.e. a two-dimensional Euclidean space). In other words, every triangle is contained in a plane, and there is only one plane that contains that triangle.
All triangles are contained in a single plane if all geometry is on the Euclidean plane, but in higher-dimensional Euclidean spaces, this is no longer the case.
The definition of the terminology used to classify triangles can be found on the first page of Euclid's Elements, which dates back more than two thousand years. In modern classification, names are either directly transliterated from Euclid's Greek or translated from Latin.
Hence, To prove congruence using S Theorem, you must understand that pairs of two angles are congruent as well as the pair of sides that are next to one of the specified angles.
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Every weekday Sam drives the distance of 25 km between his home and work in 30 minutes. However, Fridays it only takes him 20 minutes to cover the same distance.
a) The speed of Sam on weekdays from home to work is 50 km/hr.
b) The speed of Sam on fridays from home to work is 50 km/hr.
What is speed?
The distance travelled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar quantity.
The distance between Sam's work place and home is D = 25 km
The time it takes for Sam to cover the distance on weekdays T1 = 30 minutes = 1/2 hours
The time it takes for Sam to cover the distance on fridays T2 = 20 minutes = 1/3 hours.
The formula to calculate the speed is -
Speed = Distance / Time
The speed of Sam on weekdays is -
Speed = D / T1
Substitute the values in the equation -
Speed = 25 / (1/2)
Speed = 25 × 2
Speed = 50 km/hr
The speed of Sam on fridays is -
Speed = D / T2
Substitute the values in the equation -
Speed = 25 / (1/3)
Speed = 25 × 3
Speed = 75 km/hr
Therefore, Sam's speed is 50 km/hr and 75 km/hr.
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Every weekday, from Monday to Thursday, Sam drives the distance of 25km between his home and work in 30 minutes. However, on Fridays it only takes him 20 minutes to cover the same distance.
Answers should be in kilometres/hour
a) Calculate his speed on weekdays, except on Fridays.
b) Calculate his speed only on Fridays.