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3 years ago

PLEASE HELP I WILL MARK YOU BRAINIEST!!

Mathematics

1 answer:

Keith_Richards [23]3 years ago

5 0

Answer:
r = 9

The error happened when -3 was multiplied by -r in the first step, negative and negative makes a positive so it should have been
-18 + 3r= 9 in the second step.
Hope this helps :)

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3 years ago

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masha68 [24]

Answer:

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Step-by-step explanation:

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4 years ago

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2. After the American Revolution why was there a need to establish a stable banking system?

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Answer:

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3 years ago

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aev [14]

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Step-by-step explanation:

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4 years ago

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Evaluate x/y when x=9/4 and y=3/5

lana66690 [7]

Answer:

$\displaystyle x/y=\frac{15}{4}$

Step-by-step explanation:

<u>Division of fractions</u>

To calculate the division of fractions a/b and c/d, it's usually easier to multiply a/b by the reciprocal of the denominator, that is:

$\displaystyle \frac{\frac{a}{b}}{\frac{c}{d}}=\frac{a}{b}\cdot \frac{d}{c}$

We will evaluate x/y when x=9/4 and y=3/5:

$\displaystyle \frac{\frac{9}{4}}{\frac{3}{5}}=\frac{9}{4}\cdot \frac{5}{3}$

$\displaystyle=\frac{45}{12}$

Simplifying:

$\displaystyle \boxed{x/y=\frac{15}{4}}$

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4 years ago