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2 years ago

Solve the equation 5x + 7y = 35 for y

Mathematics

2 answers:

Stolb23 [73]2 years ago

7 0

Y=(-5/7)x+5

Subtract 5x over to the right side to isolate y. then divide everything by 7. Hope this helps

dalvyx [7]2 years ago

5 0

X and y are variables

remember, you can do anything to an equaiton as long as you do it to both sides

5x+7y=35
add -5x to both sides
-5x+5x+7y=35-5x
0x+7y=35-5x
7y=35-5x
divide both sides by 7
$\frac{7y}{7}=\frac{35-5x}{7}$
$(\frac{7}{7})y=(\frac{35}{7})+(\frac{-5x}{7})$
$(1)y=(5)-\frac{5x}{7}$
$y=\frac{-5x}{7}+5$

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2 years ago

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marysya [2.9K]

The <em>correct answer</em> is:

6 balloons.

Explanation:

Let x represent the number of balloons purchased.

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We will call the function for Singing Balloons s(x):

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We want the amount for Clowns R Fun, c(x) to be less:

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Subtract 2 from each side:

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4 < 0.7x

Divide each side by 0.7:

4/0.7 < 0.7x/0.7

5.7 < x

x > 5.7

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<h2>Answer with explanation:</h2>

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