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Svetllana [295]
3 years ago
10

Selma went shopping and bought identical sweaters for each of 3 friends. If she spent $42, what was the cost of each sweater? In

clude your equation with your answer.
Mathematics
1 answer:
faust18 [17]3 years ago
7 0

Answer:

14 dollars

Step-by-step explanation:

42 / 3 = x amount of dollars

14 = x

so every one sweater costs 14 dollars

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Air pressure may be represented as a function of height (in meters) above the
denis-greek [22]

Answer: OPTION C.

Step-by-step explanation:

<h3> The complete exercise is: "Air pressure may be represented as a function of height (in meters) above the surface of the Earth, as shown below:</h3><h3>  P(h) =P_0e^{-0.00012h} </h3><h3> In this function P_o   is the air pressure at the surface of the earth, and h is the height above the surface of the Earth, measured in meters. At what height will the air pressure equal 50% of the air pressure at the surface of the Earth"</h3><h3></h3>

Given the following function:

P(h) =P_0e^{-0.00012h}

In order to calculate at what  height the air pressure will be equal 50% of the air pressure at the surface of the Earth, you can follow these steps:

1. You need to substitute P(h)=0.5P_o into the function:

0.5P_o=P_0e^{-0.00012h}

2. Finally, you must solve for h.

Remember the following property of logarithms:

ln(b)^a=a*ln(b)\\\\ln(e)=1

Then, you get this result:

0.5P_o=\frac{P_o}{e^{0.00012h}}\\\\(0.5P_o)(e^{0.00012h})=P_o\\\\e^{0.00012h}=\frac{P_o}{0.5P_o}\\\\ln(e)^{0.00012h}=ln(2)\\\\0.00012h*1=ln(2)\\\\h=\frac{ln(2)}{0.00012}\\\\h=5576.2

7 0
4 years ago
What ordered pair is a solution of 2y-3x=8?
Lynna [10]

Answer:

(6,13)

Step-by-step explanation:

Hope that helps

3 0
3 years ago
Read 2 more answers
What is the volume of the empty part of the box? Plz plz plz help
kodGreya [7K]

One third of the box will be 3 inches long, so is equivalent to a 3-inch cube. It has a volume of

... (3 in)³ = 27 in³

The appropriate choice is ...

... D. 27 cu. in.

_____

Volume is found by multiplying length by width by height. When all are the same (3 in), the product is (3 in)·(3 in)·(3 in) = (3 in)³.

6 0
3 years ago
2m + 14 = -3?I need the steps and answer
Inessa [10]
2m+14=-3
First, subtract 14 from both sides to make the problem simplifer.
2m+14-14=-3-14
2m=-17
Divide both sides by 2 to solve the problem.
2m/2=-17/2
m=8.5
Hope it helps. :D
5 0
3 years ago
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riadik2000 [5.3K]

Answer:

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