A rectangular storage container without a lid is to have a volume of 10 m3. the length of its base is twice the width. material for the base costs $15 per square meter. material for the sides costs $9 per square meter. let w denote the width of the base. Find a function in the variable w giving the cost C in dollars) of constructing the box.
The function in variable w giving the cost C (in dollars) of constructing the box is C(w) = 30w² + 270/w. The result is obtained by using the formula of volume and area of the box.
How to determine the function?We have a rectangular storage container without a lid.
Volume, V = 10 m³Length, l = 2wWidth, w = wBase costs $15/m²Sides costs $9/m²The formula of volume of the box is
V = l × w × h
Where
l = lengthw = widthh = heightSo, the height is
10 = 2w × w × h
10 = 2w² × h
h = 10/2w²
h = 5/w²
To find the total cost, calculate the area of base and sides of the box!
See the picture in the attachment!
The base area is
A₁ = 2w × w = 2w² m²
The sides area is
A₂ = 2(2wh + wh)
A₂ = 2(3wh)
A₂ = 6wh
A₂ = 6w(5/w²)
A₂ = 30/w m²
The total cost is
C = $15(2w²) + $9(30/w)
C = $30w² + $270/w
The function of the total cost is
C(w) = 30w² + 270/w
Hence, the function of constructing the box is C(w) = 30w² + 270/w.
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Without making any calculations, which data set has the smallest standard deviation? 1, 1, 2, 2, 3, 3 1, 3, 5 0, 1, 5, 6, 9, 10 1, 1, 1, 1, 2, 2, 2, 2
Answer: 0
Step-by-step explanation:
Answer:
The answer is A
Step-by-step explanation:
Question 3 The bus impedance matrix of a four-bus network with values in per unit is j0.15 j0.08j0.04 j0.07 j0.08 j0.15 j0.06j0.09 Z bus j0.04 j0.06 j0.13 j0.05 j0.07 j0.09 j0.05 j0.12 have their subtransient reactances Generators connected to buses and included in Zbus. If prefault current is neglected, find the subtransient current in per unit in the fault for a three-phase fault on bus 4. Assume the voltage at the fault is 1.0/0° per unit before the fault occurs. Find also the per-unit current from generator 2, whose subtransient reactance is 0.2 per unit. =
To find the subtransient current in per unit for a three-phase fault on bus 4, we need to calculate the fault current using the bus impedance matrix.
Given bus impedance matrix Zbus:
| j0.15 j0.08 j0.04 j0.07 |
| j0.08 j0.15 j0.06 j0.09 |
| j0.04 j0.06 j0.13 j0.05 |
| j0.07 j0.09 j0.05 j0.12 |
To find the fault current on bus 4, we need to find the inverse of the Zbus matrix and multiply it by the pre-fault voltage vector.
The pre-fault voltage vector V_pre-fault is given as:
| 1.0/0° |
| 1.0/0° |
| 1.0/0° |
| 1.0/0° |
Let's calculate the inverse of the Zbus matrix:
Zbus_inverse = inv(Zbus)
Now, we can calculate the fault current using the formula:
I_fault = Zbus_inverse * V_pre-fault
Calculating the fault current, we have:
I_fault = Zbus_inverse * V_pre-fault
Substituting the values and calculating the product, we get:
I_fault = Zbus_inverse * V_pre-fault
= Zbus_inverse * | 1.0/0° |
| 1.0/0° |
| 1.0/0° |
| 1.0/0° |
Please provide the values of the Zbus matrix and the pre-fault voltage vector to obtain the specific values for the fault current and the per-unit current from generator 2.
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a) Work out the value of (√√5)²x (√√3)²?
b) Work out the value of (9)** (√√30)?
Answer:
15 and 270
Step-by-step explanation:
using the property of radicals
(\(\sqrt{x}\) )² = x and (\(\sqrt[3]{x}\) )³ = x
then
(\(\sqrt{5}\) )² × (\(\sqrt{3}\) )² = 5 × 3 = 15
(\(\sqrt[3]{9}\) )³ × (\(\sqrt{30}\) )² = 9 × 30 = 270
Given the triangle ABC at points A = ( 2, 2 ) B = ( 4, 5 ) C = ( 6, 3 ), and if the triangle is first reflected over the y axis, and then over the x axis, find the new point A''.
Given
The triangle ABC at points A = (2, 2) B = (4, 5) C = (6, 3).
To find:
two rational numbers between 0.333...and0.444....
Take the average. The average of two numbers is halfway between them.
We have 0.333… = 1/3 and 0.444… = 4/9. Then the average of these is
(1/3 + 4/9)/2 = (3/9 + 4/9)/2 = (7/9)/2 = 7/18
To get another number between 1/3 and 4/9, take the average of one of these and 7/18. For instance,
(1/3 + 7/18)/2 = (6/18 + 7/18)/2 = (13/18)/2 = 13/36
Or more simply, just chop off some of the non-terminating part and increment the last digit. For example,
• chop 0.333… down to 0.33, then increase the last digit by 1 to get 0.34
• chop 0.444… down to 0.44, then decrease the last digit to get 0.43
11. Engineering The maximum load for a certain elevator is 2000 pounds. The total
weight of the passengers on the elevator is 1400 pounds. A delivery man who weighs
243 pounds enters the elevator with a crate of weight w. Write, solve, and graph an
inequality to show the values of w that will not exceed the weight limit of the elevator.
The inequality to show the values of [w] that will not exceed the weight limit of the elevator is w + 1643 ≤ 2000. On solving the inequality, we get w ≤ 357. The graph of the inequality is attached.
What is inequality?In mathematics, an inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions. It is used most often to compare two numbers on the number line by their size.An inequality is a mathematical relationship between two expressions and is represented using one of the following -≤ : less than or equal to
≥ : greater than or equal to
< : less than
> : greater than
≠ : not equal to
Given is the maximum load for a certain elevator is 2000 pounds. The total weight of the passengers on the elevator is 1400 pounds. A delivery man who weighs 243 pounds enters the elevator with a crate of weight [w].
We can write the inequality as follows -1400 + 243 + w ≤ 2000
w + 1643 ≤ 2000
Solving the inequality, we get -w + 1643 ≤ 2000
w ≤ 2000 - 1643
w ≤ 357
Refer to the graph attached.Therefore, the inequality to show the values of [w] that will not exceed the weight limit of the elevator is w + 1643 ≤ 2000. On solving the inequality, we get w ≤ 357. The graph of the inequality is attached.
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Distance between (-1,-2) and (8,0)
Answer:
9.219544
Step-by-step explanation:
(8 - -1)^2 + (0 - -2)^2 = 85, sqrt 85 = 9.219544
Answer:
Step-by-step explanation:
Distance formula : d=√((x_2-x_1)²+(y_2-y_1)²)
d=√((8-(-1))²+(0-(-2))²)
d=√((9)²+(2)²)
d=√(81+4)
d=√(85)
d = 9.21954445729
PLEASE HELP I WILL MARK BRAINLIEST!!!
Points L, M, and N lie on the surface of a sphere with
its center at point O. Point T lies in the interior of the
sphere. Which segment represents a chord of the
sphere?
a: OT
b: LM
c: LT
d: ON
Suppose y varies inversely with x, and y = 49 when x = 17
. What is the value of x when y = 7 ?
Answer:
119 is the value of x when y = 7
Step-by-step explanation:
Since y varies inversely with x, we can use the following equation to model this:
y = k/x, where
k is the constant of proportionality.Step 1: Find k by plugging in values:
Before we can find the value of x when y = k, we'll first need to find k, the constant of proportionality. We can find k by plugging in 49 for y and 17 for x:
Plugging in the values in the inverse variation equation gives us:
49 = k/17
Solve for k by multiplying both sides by 17:
(49 = k / 17) * 17
833 = k
Thus, the constant of proportionality (k) is 833.
Step 2: Find x when y = k by plugging in 7 for y and 833 for k in the inverse variation equation:
Plugging in the values in the inverse variation gives us:
7 = 833/x
Multiplying both sides by x gives us:
(7 = 833/x) * x
7x = 833
Dividing both sides by 7 gives us:
(7x = 833) / 7
x = 119
Thus, 119 is the value of x when y = 7.
Can someone plz help me
please help me
ill give brainlyist
The constant of proportionality is calculated as:
Option D: 8.5
How to find the constant of proportionality?The constant of proportionality is defined as the constant value of the ratio between two proportional quantities.
Now, we are given a table of values and as such, we can find the constant of proportionality from the formula:
k = y/x
From the table, we have:
k = 25.50/3
k = 8.5
k = 42.5/5
k = 8.5
k = 59.50/7
k = 8.5
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find the general solution of the given second-order differential equation. 2y'' + y' = 0
Therefore, the general solution of the given second-order differential equation is: y = c1 e^(0t) + c2 e^(-1/2 t).
To find the general solution of the given second-order differential equation 2y'' + y' = 0, we can assume that the solution is of the form y = e^(rt), where r is a constant to be determined.
First, we find the first and second derivatives of y with respect to t:
y' = re^(rt)
y'' = r^2 e^(rt)
Substituting these expressions into the differential equation, we get:
2r^2 e^(rt) + r e^(rt) = 0
Factoring out e^(rt), we get:
e^(rt) (2r^2 + r) = 0
This equation will be satisfied if either e^(rt) = 0 or 2r^2 + r = 0.
Since e^(rt) is never zero, we must have:
2r^2 + r = 0
Factoring out r, we get:
r(2r + 1) = 0
So, either r = 0 or r = -1/2.
Therefore, the general solution of the given second-order differential equation is:
y = c1 e^(0t) + c2 e^(-1/2 t)
Simplifying this expression, we get:
y = c1 + c2 e^(-1/2 t)
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gif a stock with a beta of 1.3 is expected to return 18% when treasury bills yield 7%, what is the expected return on the market portfolio? enter your answer as a percent rounded to two decimal places?
The expected return on the market portfolio is 15.46.
How to get expected return on the market portfolio?To calculate the expected return on the market portfolio, we can use the Capital Asset Pricing Model (CAPM) formula, which is: Expected Return = Risk-free rate + Beta * (Market return - Risk-free rate)
In this case, the risk-free rate is given as 7% (treasury bills yield), and the beta of the stock is 1.3. We are also given the expected return on the stock as 18%.
Substituting these values into the CAPM formula, we get:
18% = 7% + 1.3 * (Market return - 7%)
Simplifying the equation, we get:
Market return - 7% = (18% - 7%) / 1.3
Market return - 7% = 8.46%
Market return = 7% + 8.46%
Market return = 15.46%
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Please help me solve this problem ASAP
Answer:
x=1.6
Step-by-step explanation:
can someone help please
When Tracey pours all the water from the smaller 5-inch cube container into the larger 7-inch cube container, the water will be approximately 7 inches deep in the larger container.
To find out how deep the water will be in the larger container, we need to consider the volume of water transferred from the smaller container. Since both containers are cube-shaped, the volume of each container is equal to the length of one side cubed.
The volume of the smaller container is 5 inches * 5 inches * 5 inches = 125 cubic inches.
When Tracey pours all the water from the smaller container into the larger container, the water completely fills the larger container. The volume of the larger container is 7 inches * 7 inches * 7 inches = 343 cubic inches.
Since the water fills the larger container completely, the depth of the water in the larger container will be equal to the height of the larger container. Since all sides of the larger container have the same length, the height of the larger container is 7 inches.
Therefore, the water will be approximately 7 inches deep in the larger container.
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The width of a rectangle is 10 inches less than its length. If the perimeter of the rectangle is 36 inches. Write and solve an equation to find its width in inches.
Answer:
Step-by-step explanation:
Let us suppose that length of Triangle is equal to x.
that is
Length = x
Than
width = x - 10
perimeter of Rectangle is
2(length) + 2(width) = 36
2x + 2(x-10) = 36
2x +2x - 20 = 36
4x -20 = 36
4x = 36 +20
4x = 56
x = 56/4
x = 14
so Length of Rectangle is 14 inches
and
width = x - 10
width = 14 - 10
width = 4
4-2/3x=2/5 rewright with no fractions
Answer: x= 27/5
Step-by-step explanation:
This equation can rewrite as -2/3x + 4 = 2/5
We separate x by subtracting 4 from both sides
-2/3x = -20/5 +2/5
-2/3x = -18/5
Then we divided both sides by -2/3
Ad we will get x= 27/5
help me please i will really appreciate it
Answer:
2.H
Step-by-step explanation:
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What is the average rate of change for the line shown in the graph
Answer:
The average rate of change is 10.
Step-by-step explanation:
Since the average rate of change is the slope of a line, you'd solve this problem by finding the slope.
First, you can start by using the \(\frac{y_2-y_1}{x_2-x_1}\) method.
Plug in the points (0,10) and (1,20).
\(\frac{20-10}{1-0} =\frac{10}{1} =10\)
Therefore your answer is 10.
Hope this helped!
Emmett is planning a party at an escape room. The escape room will charge Emmett a booking fee and an additional cost per person attending the party.
This situation can be modeled as a linear relationship.
Emmett is planning a party at an escape room. The escape room will charge Emmett a booking fee and an additional cost per person attending the party.
This situation can be modeled as a linear relationship.
What does the slope of the line tell you about the situation?
A. The booking fee is $50
B. After the booking fee the party will cost $20 per person
C. After the booking fee the party will cost $25 per person
D. Including the bookin fee it would cost emmett $250 total for 10 people to attend
The provide situation can be modeled as a linear equation, y = 50 + 20x, where y is total cost and x is number of person who will attend the party. The slope of line tells me that the additional cost per person attending the party is $20. Thus, write option is option (b).
Emmett wants to through a party at an escape room. There are two charges for
escape room, one is booking fee and other one is additional cost per person attending the party. Let the booking fee and additional cost per person who attended the party of escape room be 'a ' and 'b'. Also, consider total person who will attend the party are equal to 'x'. So, total cost = booking cost + additional cost per person × number of people's who will attend the party. Let total cost of escape room for x people be 'y'. Then,
y = a + bx --(1)
it is act as modeled linear relationship, see above graph, which represents it graphically. In the graph initial total cost is 50, when no additional cost occur, that is booking fee equals to $50 or a = $50. After that, number of people increase total cost also increases. When there are 10 people in party then total cost is $250 and the additional cost = $200 for 10 people. So, additional cost per person
= 200/10 = 20 , i.e., b = $20 and equation(1) is rewrite, y = 50 + 20x.
If we compare it with standard linear equation, y = mx + c
where m --> slope of line
c --> y-intercept
then slope of equation (1) is equals to 'b' and b = 20. In this situation, the slope of line tell me that except the booking fee, the additional cost per person who will attend the party is equals to $20. Hence, the required answer is option(b).
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Complete question:
Emmett is planning a party at an escape room. The escape room will charge Emmett a booking fee and an additional cost per person attending the party.
This situation can be modeled as a linear relationship, see above graph. What does the slope of the line tell you about the situation?
A. The booking fee is $50
B. After the booking fee the party will cost $20 per person
C. After the booking fee the party will cost $25 per person
D. Including the bookin fee it would cost emmett $250 total for 10 people to attend.
B. After the booking fee the party will cost $20 per person
What is the slope of this line?
Use the two points on the line to figure the rise over the run.
Enter the answer as a decimal.
The slope of the line passing through the points A(1,0) and B(3,11) is 5.5 as a decimal.
What is slope of line?The slope of a line is a measure of how steep the line is and describes the rate at which the line is rising or falling.
It is defined as the change in the y-coordinate (rise) divided by the change in the x-coordinate (run) between two points on the line.
The formula for slope is:
slope = (changes in y)/(change in x).
It is typically denoted by the letter "m".
The slope of the line passing through points A(1,0) and B(3,11) is:
Rise / Run = (Y-Coordinate Change) / (X-Coordinate Change).
= (11-0) / (3-1)
= 11/2
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As a director of operations for a fast-food company, you oversee two of the company's restaurants. One of the stores reports their revenue for the year as 0.15 of the company's revenue, and the other restaurant reports 21% of the company's revenue. What is the total percentage of the company's revenue that your two stores report? 3.6% 6% 21.15% 22.5% 36%
Answer:
Total = 36%
Step-by-step explanation:
Given
Company A = 0.15
Company B = 21%
Required
Determine the total revenue
Total is calculated as thus:
Total = Company A + Company B
Total = 0.15 + 21%
Represent 0.15 as %
Total = 0.15*100% + 21%
Total = 15% + 21%
Total = 36%
What is the y -value of the y -intercept of the quadratic function y = 2(x+2)²-5 ?
The y-value of the y-intercept of the quadratic function y = 2(x+2)²-5 is -5.
The y-intercept is the point at which the graph of a function intersects the y-axis. To find the y-intercept, we set x = 0 and solve for y. In this case, when x = 0, the equation becomes:
y = 2(0+2)² - 5
= 2(2)² - 5
= 2(4) - 5
= 8 - 5
= 3
Therefore, the y-value of the y-intercept is 3. This means that the graph of the quadratic function intersects the y-axis at the point (0, 3). The coefficient of the quadratic term (x+2)² determines the shape and direction of the parabola, while the constant term -5 shifts the graph vertically. The y-intercept represents the value of y when x is zero, which is -5 in this case.
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What is the probability that either event will occur?
First, find the probability of event A.
A
B
18
12
6
P(A) = [?]
Answer:
Step-by-step explanation:
The probability of occurring event A is 23% or 0.23.
To find the probability of event A:
Divide the number of events in A to the total number of events.
Number of events in A = 12
Total number of events = 12+20+20
=52
P(A)=Number of events in A/Total number of events
\(=\frac{12}{52}\)
Divide both sides by 12:
\(=\frac{3}{13}\)
\(=0.23\)
\(=23\) %
Hence, the probability of occurring event A is 23% or 0.23.
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MY BROTHER NEEDS A TUTOR ASAP, HE IS CRYING BECAUSE HE IS FAILING SCHOOL....xdd
Please contact me, my number is 226-909-7821
Answer:
hello from what subject math?
Answer: Oh no, what subjects? <3
1. 1. MP.5 Use Appropriate Tools Carla had a piece of rope that was 14 in. long. She used some of the rope for a crafts project. Now there is 14 in. left. How much rope did she use? Use the number line to help.
Answer:
4/8, 1/2
Step-by-step explanation:
7/8 - 3/8 = 4/8
4/8 >>> divide both by 4
4 divided by 4 = 1
8 divided by 4= 2
1/2 Inches
Salmon and Federico are choosing a number between 1 & 100, picking a color from ROY G BIV, and picking a letter out of "INDIANA". Either one will go first. State the probability of each situation as a percentage, fraction and decimal.
1. Salmon chooses a composite number, A cool color( G BIV) and an A.
2.Federico chooses a prime number, A color starting with a vowel, and a constanant.
3.Either chooses a number divisible by 7 or 8, any color, and a vowel.
4. Either chooses a number divisible by 5 or 4, blue or green, and L or N
To determine the probabilities, we need to consider the number of favorable outcomes for each situation divided by the total number of possible outcomes.
1.Probability: 228/700 = 0.3257 ≈ 32.57% ≈ 32.6% (rounded to one decimal place)
2. Probability: 200/3500 = 0.0571 ≈ 5.71% ≈ 5.7%
3. Probability: 504/2100 = 0.24 ≈ 24% (exact fraction)
4.Probability: 180/1400 = 0.1286 ≈ 12.86% ≈ 12.9% (rounded to one decimal place)
1. Salmon chooses a composite number, a cool color (G, B, I, or V), and an A:
a) Composite numbers between 1 and 100: There are 57 composite numbers in this range.
b) Cool colors (G, B, I, or V): There are 4 cool colors.
c) The letter A: There is 1 A in "INDIANA."
Total favorable outcomes: 57 (composite numbers) * 4 (cool colors) * 1 (A) = 228
Total possible outcomes: 100 (possible numbers) * 7 (possible colors) * 1 (possible letter) = 700
Probability: 228/700 = 0.3257 ≈ 32.57% ≈ 32.6% (rounded to one decimal place)
2. Federico chooses a prime number, a color starting with a vowel (E or I), and a consonant:
a) Prime numbers between 1 and 100: There are 25 prime numbers in this range.
b) Colors starting with a vowel (E or I): There are 2 colors starting with a vowel.
c) Consonants in "INDIANA": There are 4 consonants.
Total favorable outcomes: 25 (prime numbers) * 2 (vowel colors) * 4 (consonants) = 200
Total possible outcomes: 100 (possible numbers) * 7 (possible colors) * 5 (possible letters) = 3500
Probability: 200/3500 = 0.0571 ≈ 5.71% ≈ 5.7% (rounded to one decimal place)
3. Either chooses a number divisible by 7 or 8, any color, and a vowel:
a) Numbers divisible by 7 or 8: There are 24 numbers divisible by 7 or 8 in the range of 1 to 100.
b) Any color: There are 7 possible colors.
c) Vowels in "INDIANA": There are 3 vowels.
Total favorable outcomes: 24 (divisible numbers) * 7 (possible colors) * 3 (vowels) = 504
Total possible outcomes: 100 (possible numbers) * 7 (possible colors) * 3 (possible letters) = 2100
Probability: 504/2100 = 0.24 ≈ 24% (exact fraction)
4. Either chooses a number divisible by 5 or 4, blue or green, and L or N:
a) Numbers divisible by 5 or 4: There are 45 numbers divisible by 5 or 4 in the range of 1 to 100.
b) Blue or green colors: There are 2 possible colors (blue or green).
c) L or N in "INDIANA": There are 2 letters (L or N).
Total favorable outcomes: 45 (divisible numbers) * 2 (possible colors) * 2 (letters) = 180
Total possible outcomes: 100 (possible numbers) * 7 (possible colors) * 2 (possible letters) = 1400
Probability: 180/1400 = 0.1286 ≈ 12.86% ≈ 12.9% (rounded to one decimal place)
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The batting Wang Xiu Ying uses to fill quilts has a thermal conductivity rate of 0.030.030, point, 03 watts (\text{W})(W)left parenthesis, start text, W, end text, right parenthesis per meter (\text{m})(m)left parenthesis, start text, m, end text, right parenthesis per degree Celsius (^\circ\text{C})( ∘ C)left parenthesis, degrees, start text, C, end text, right parenthesis.
Answer:
Step-by-step explanation:
The question is incomplete. Here is the complete question.
the batting wang xiu ying uses to fill quilts has a thermal conductivity rate of 0.03 watts (W) per meter(m) per degree celsius. what is the batting thermal conductivity when w/cm•c
Given
K = 0.03W/m°C
Required
Convert K to W/cm°C
Since 1m = 100cm,
K = 0.03w/1×100cm°C
K = 3×10^-2w/10² cm°C
K = 3 × 10^-2w/10² cm°C
K = 3w× 10^{-2-2}cm°C
K = 3w×10^-4cm°C
K = 0.0003w/cm°C
Answer:
0.0003
Step-by-step explanation:
DID IT ON KHAN
and Since 1m = 100cm,
K = 0.03w/1×100cm°C
K = 3×10^-2w/10² cm°C
K = 3 × 10^-2w/10² cm°C
K = 3w× 10^{-2-2}cm°C
K = 3w×10^-4cm°C
K = 0.0003w/cm°C
The length of the rectangle given below is more than the width of the rectangle. Write the inequality you would use to solve the problem. Then, Solve the inequality. Make sure you use the proper notation for your equation and answer.
Answer:
Inequality:
8in > x - 5in
Solution:
x < 13in
Step-by-step explanation:
If the length 8in is is bigger than the width (x - 5in) then we just need to write it:
8in > x - 5in
To solve for x, we need to move everything but x to the other side
8in > x - 5in
13in > x