2 years ago

Find the percent increase. Round to the nearest percent

Mathematics

1 answer:

Dmitrij [34]2 years ago

6 0

The percent increase is 18.18 repeating

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Factor the expression.

grigory [225]

Hey!

First, let's write the problem,
$4r^2-64$
Factor out the common term, which is 4,
$=4\left(r^2-16\right)$
Then, let's factor this part: $r^2-16$
We are going to factor it using the difference of squares rule.
$=\left(r+4\right)\left(r-4\right)$
Our final factored answer would be,
$=4\left(r+4\right)\left(r-4\right)$

Thanks!
-TetraFish

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3 years ago

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He bought four violas for 40$ each. Later he bought one whistle for 100$. After that, he returned one viola. Write the total cha

Goshia [24]

40*3=120
100+120=220
Change is £40

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3 years ago

Bernice estimated that 69% of 242 is 168. Is her estimate reasonable?

ycow [4]

Her estimate is not reasonable.

Since she estimated 69%, you could do either of these options. You could...
A. Divide 242 (or .5) to show how much half off would be, then compare her estimate with half of 242 (121). OR...
B. Simply divide 242 by 69% (.69) and compaor her estimate to the exact amount (166.98).

I hope this helps!

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3 years ago

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Anna11 [10]

20 it the least common multiple of the numbers given

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Vlad1618 [11]

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