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Alisiya [41]
2 years ago
9

Michelle plans on raising $80 for her softball team. To raise the money, she is selling team shirts for $10 each.

Mathematics
1 answer:
8_murik_8 [283]2 years ago
6 0

Given:

Michelle plans on raising $80.

Selling price of each shirt = $10

So far she has raised $20.

To find:

The number of more shirts she needs to sell.

Solution:

Let x be the number of more shirts she needs to sell.

Selling price of one shirt = $10

Selling price of x shirt = $10x

Total raising amount = $(10x + 20)

Michelle plans on raising $80. So,

10x+20=80

Subtract both sides by 20.

10x=80-20

10x=60

Divide both sides by 10.

x=\dfrac{60}{10}

x=6

So, the required equation is 10x+20=80

Therefore, the correct option is A.

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We also given "the area of the frame is the same as the area of the portrait."

We can setup an equation now,

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FOIL (2x+50) * (2x+70), we get

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x^2 +60x - 875 =0

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=\frac{-60\pm \sqrt{60^2-4\cdot \:1\left(-875\right)}}{2\cdot \:1}

x=\frac{-60+\sqrt{60^2-4\cdot \:1\left(-875\right)}}{2\cdot \:1}=5\left(\sqrt{71}-6\right)

x=\frac{-60-\sqrt{60^2-4\cdot \:1\left(-875\right)}}{2\cdot \:1}:\quad -5\left(6+\sqrt{71}\right)

We cant take negative value.

So, x=5\left(\sqrt{71}-6\right)=12.13

We could take approximately 12 cm.



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If Patricia drives at two-third of her usual speed, she covers a certain distance in one hour more than the time she takes while
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