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3 years ago

8

write a problem that can be modeled by the equation 2x 40=60. then the solve the equation and explain the solution in the contex

t of the problem

1 answer:

elixir [45]3 years ago

5 0

<span>A tutor charges $40 plus $2/minute to do algebra homework.
Cost = 2*x + 40, where x is the number of minutes.
</span>

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2 years ago

The ratio of the width to the length of a painting is 3 to 7. If the painting is 42 in. long how wide is it

belka [17]

If length is 42 inches, then width is 18 inches.

Step-by-step explanation:

We are given ratio of width to the length of a painting i.e 3 to 7. If the painting is 42 inches long, then how wide it is?

Solving:

$\frac{width}{length}=\frac{width}{length}\\ \frac{3}{7}=\frac{w}{42}\\ Cross\,\,multiply:\\3*42=w*7\\126=w*7\\w=\frac{126}{7}\\w=18$

So, If length is 42 inches, then width is 18 inches.

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Learn more about Ratio at:

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3 years ago

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MatroZZZ [7]

Answer:

B.

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Order of Operations: BPEMDAS
Equality Properties

Step-by-step explanation:

<u>Step 1: Define function</u>

f(x) = 8x + 4

<u>Step 2: Prep</u>

Rewrite: y = 8x + 4
Swap <em>x</em> and <em>y</em>: x = 8y + 4

<u>Step 3: Find Inverse (Solve for </u><em><u>y</u></em><u>)</u>

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Rewrite: y = (x - 4)/8
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MariettaO [177]

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Step-by-step explanation:

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