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3 years ago

- 5x + 2y = 9 y = 7x

Mathematics

1 answer:

Lorico [155]3 years ago

8 0

Answer:

Explanation:

- 5x + 2y = 9

y = 7x

<u>Insert 7x For 'y'</u>

- 5x + 2(7x) = 9

<u>Remove Parenthesis</u>

-5x + 2 · 7x = 9

<u>Multiply: 2 · 7 = 14</u>

-5x + 14x = 9

<u>Add: -5x + 14x = 9x</u>

9x = 9

<u>Divide Both Sides By 9</u>

9x ÷ 9 = 9 ÷ 9

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First option

Step-by-step explanation:

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2 years ago

Sunday by 11:59pm

beks73 [17]

Answer:

The amount of markup is 88 dollars.

Step-by-step explanation:

Given that the whole sale price of bicycle is: $400

$P = \$400$

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Given that mark up percentage is 22%

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