Steve washed 15 cars in 3 hours.how many cars can he Wash in 7 hours?

1 answer:

5 0

15/3 = x/7.

Use cross products and multiply 15*7= 105/3= 35.
He can wash 35 cars in 7 hours..
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Step-by-step explanation:

We have the following polynomial:

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Applying common factor $4y^{2}$ :

$4y^{2}(4x^{2}-36xy+81y^{2})$

Note the polynomial inside the parenthesis is a perfect square trinomial, which can be factored to $(2x-9y)^{2}$ . Hence, the final simplification is: