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marta [7]
3 years ago
11

Celeste wants to have a haircut and permed and also go to lunch. she knows she will need $77. the perm will cost twice as much a

s her haircut and she needs $5 for lunch.
How much does the perm cost?
Mathematics
1 answer:
Elza [17]3 years ago
4 0
$48 is the cost of the perm
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Simplify completely x^2+7x-30/x+10
marta [7]

Answer:

(x-3)

Step-by-step explanation:

we have

\frac{x^{2}+7x-30}{x+10}

step 1

Simplify the numerator

Complete the square

Equate the equation to zero

x^{2}+7x-30=0

x^{2}+7x=30

x^{2}+7x+3.5^{2}=30+3.5^{2}

x^{2}+7x+12.25=42.25

Rewrite as perfect squares

(x+3.5)^{2}=42.25

Take square root both sides

(x+3.5)=(+/-)6.5

x=-3.5(+/-)6.5

x=-3.5(+)6.5=3

x=-3.5(-)6.5=-10

therefore

x^{2}+7x-30=(x-3)(x+10)

substitute in the numerator

\frac{x^{2}+7x-30}{x+10}=\frac{(x-3)(x+10)}{x+10}=x-3

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4 years ago
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3 years ago
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The original price of an item is $130. The item is on a discount of 1/5 off the original price. You then pay a sales tax of 10%.
ahrayia [7]
Hello!

First, find 1/5 of $130, and then subtract that from the original price of the item, because it is a discount.

Divide the price of the item by 5.

130 ÷ 5 = 26

130 - 26 = 104

So, the price of the item (not including tax) is $104. Now, we must calculate the sales tax and then add that onto the price of the item, as tax is money collected by the government.

To calculate the tax, multiply the discounted price of the item by the percentage of tax, and then add it.

104 × 10% = 10.4

104 + 10.4 = 114.4

ANSWER:

The amount of money you paid fot the item is $114.4.
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Y=3/5x - 7 is the equation in slope intercept form
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Lemur [1.5K]

Answer:

I don't know the answer but if your questions are on a textbook, you can download the app Slader on your phone. You can scan the barcode on the textbook, and it gives you the answers and explains it.

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