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3 years ago

Mike runs 12.6 miles in 3.5 hours. How fast does he run in miles per hour?

Mathematics

2 answers:

zlopas [31]3 years ago

7 0

ALM not BLM ‏‏‎ ‎‏‏‎ ‎

marishachu [46]3 years ago

7 0

Answer: 3.6 mph

Step-by-step explanation:

Divide both numbers by 3.5 to get 3.6 miles per hour

That's the only step since they give you that much.

More specifically though, we could create an equation.

$12.6=3.5x$ where x is the mph.

Solve the equation by dividing both sides by 3.5 and get the same answer.

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What value of x makes this equation true? x/3 −6=10

Setler [38]

Answer:

Step-by-step explanation:

x/3 - 6 = 10

+6 +6

x/3=16

16*3=48

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3 years ago

You are going to mix a gallon bucket of window cleaner. The instructions direct you to mix 1 part cleaner to 3 parts water. How

Pie

One gallon equals to 4 quarts.

The instructions tell you to add 1 part of cleaner and 3 parts of water, in total 4 parts. It makes it easy as you can take that one part = one quart.

You will use 3 quarts of water and 1 quart of cleaner. The answer is D.

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3 years ago

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A ladder is leaning against a wall. The top of the ladder is 9 feet (ft) above the ground. If the bottom of the ladder is moved

Komok [63]

Step 1

First situation

when a ladder is leaning against a wall

Let

x-------> the distance of the bottom of the ladder from the wall

L-------> the length of the ladder

Find the length of the ladder

Applying the Pythagorean Theorem

$L^{2} =x^{2}+ 9^{2}$ ------> equation $1$

Step 2

Second situation

when the ladder will be lying flat on the ground

Find the length of the ladder

In this situation the length of the ladder is equal to

$L=x+3$

square both sides

$L^{2}=(x+3)^{2}$ ------> equation $2$

Step 3

equate equation $1$ and equation $2$

$x^{2}+ 9^{2}=(x+3)^{2}\\x^{2}+81=x^{2} +6x+9\\ 6x=81-9\\6x=72\\x=12\ ft$

therefore

the answer is

the length of the ladder is $12\ ft$

see the attached figure to better understand the problem

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3 years ago

About 60% of people in North America know how to swim. Use that statistic to answer the questions below.

kenny6666 [7]

Answer:

(Picture)

Step-by-step explanation:

To find 60% of people you just multiply .6 with the number you are trying to find 60% of. Like 100. 100 times .6 = 60.

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2 years ago

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Rita makes and sells necklaces. The materials to make each necklace cost $2.75. Last week she made 8 necklaces and wants to make

Lisa [10]

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Answer:

The equation should be 8 (x minus 2.75) = 78, and she needs to sell each necklace for $12.50.

Step-by-step explanation:

The contribution margin of each necklace is the difference between its selling price (x) and its cost (2.75). Then the total profit from 8 necklaces would be ...

8(x -2.75)

If Rita wants that profit to be $78, then she needs to solve the equation ...

8(x -2.75) = 78 . . . . correct equation

The solution is ...

x -2.75 = 9.75 . . . . divide by 8

x = 12.50 . . . . . . . . add 2.75

She needs to sell each necklace for $12.50.

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3 years ago

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