2 years ago

Suppose a car travels at a rate of 60 miles per hour for 3 hours. How many miles does the car travel?

Mathematics

1 answer:

nataly862011 [7]2 years ago

3 0

Ok lol I was going to put 180 but if you got it than that’s fine.

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Use a system of linear equations with two variables and two equations to solve. A number is 9 more than another number. Twice

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9514 1404 393

Answer:

(x, y) = (3, 12)

Step-by-step explanation:

Using the given variable definitions, we can write the equations ...

y = x + 9

2(x +y) = 30

Solving the second equation for y, we have ...

y = 15 -x

Substituting this into the first equation gives ...

15 -x = x +9

6 = 2x . . . . . . . . . add x-9

3 = x . . . . . . . . . . divide by 2

y = 3+9 = 12 . . . . substitute into the first equation

The numbers are (x, y) = (3, 12).

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago

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Gemiola [76]

Hi!

I'm not sure how to slove this, but I do know how to solve it ;D

<h3>We can't know the exact value of y, but we can isolate y on one side. First, multiply by z on both sides. </h3>

$\frac{x+y}{z*z}=3*z$

x + y = 3 * z

<h3>Now subtract x from both sides.</h3>

x - x + y = 3 * z - x

<h2>The answer is y = 3 * z - x</h2>

Hope this helps! :)

-Peredhel

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Answer:

Mean: 5.5555555555556

Median: 6

Mode: 6

Step-by-step explanation:

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