3 years ago

I need help solving 6-7

Mathematics

1 answer:

Galina-37 [17]3 years ago

4 0

The Answer is 8y^4 over x^7

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The ratio of Holly's age to that her aunt is 4:9. When holly was born her aunt was 15 years old. How old is holly's aunt now?

Lyrx [107]

Answer:

27 years

Step-by-step explanation:

Let Holly's age be h and Aunt's age be a. We can setup 2 equations and solve.

1. $\frac{h}{a}=\frac{4}{9}$

2. a - 15 = h

We can plug in equation 2 into equation 1 to solve for aunt's age:

$\frac{h}{a}=\frac{4}{9}\\\frac{a-15}{a}=\frac{4}{9}\\9(a-15)=4a\\9a-135=4a\\5a=135\\a=\frac{135}{5}=27$

Holly's aunt's age is 27

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3 years ago

(100 pts.) Pre-Al Ratios and Proportionality, check img attactched

uysha [10]

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Step-by-step explanation:

Make a proportion:

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3 years ago

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The sum of a number and -4 is no smaller than 18

Andreas93 [3]

Step-by-step explanation:

You mean the answer is - 14

So - 14 + (-4) =

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3 years ago

A fair attended by 755,082 people altogether.What is the number rounded to the nearest ten thousand

Fudgin [204]

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Simplify: (64^-1/2)^-2/3

Ede4ka [16]

This = 64^( -1/2 * -2/3)

= 64 ^ 1/3

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3 years ago