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3 years ago

6

How do you solve this equation for y 5x-10y=-40

1 answer:

Tanya [424]3 years ago

8 0

5x - 10y = -40
-10y = -40 - 5x
y = -40 - 5x / -10

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5x + 4y = 11<br> 2x + 6y = -7

olga55 [171]

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3 years ago

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kipiarov [429]

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3 years ago

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3 years ago

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Graph on a coordinate plane or explain how to graph the equation: y = 3x – 5

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1 year ago

3) David goes into a candy store with $5.00. He buys 9 peppermints for $0.15

yuradex [85]

<h3>Write an equation that will match the story problem</h3>

$x=(5 - (9 \times 0.15) ) \div 0.25$

<em><u>Solution:</u></em>

Given that,

David goes into a candy store with $5.00

Total amount with David = $ 5

He buys 9 peppermints for $0.15 each

And some sour candies. each sour candy costs $0.25

The equation is:

Let the number of sour candies bought be "x"

Then,

Remaining amount after buying pepper mint = $5 - 9 \times 0.15 = 3.65$

Each sour candy cost $0.25

<em><u>Now the number of sour candies bought is:</u></em>

$3.65 = 0.25 \times x$

x = 14.6

Thus david can buy 14 sour candies

<em><u>Thus the equation that will match the story problem is:</u></em>

$x=(5 - (9 \times 0.15) ) \div 0.25$

Where, "x" means number of sour candies bought

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3 years ago