3 years ago

For which equations is 8 a solution? Check all that apply.

Mathematics

1 answer:

ki77a [65]3 years ago

6 0

Answer:

The 2nd, 3rd, and 8th choice

Step-by-step explanation:

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natima [27]

Answer:

I have done one question for you

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3 years ago

Greg is recording the changes in his bank account balance. In the morning, he records a deposit of $7. In the afternoon, he reco

mel-nik [20]

Answer:

Step-by-step explanation:

i think that it is either -7 - -8 or -7 + 8 or -7+-8.

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2 years ago

Isabella buys a computer that is on sale for 30% off the original price. The original price is $216 more than the sale price.

kakasveta [241]

Answer:

$720$

Step-by-step explanation:

Set the problem up as a proportion

$\frac{216}{x}= \frac{30}{100}$

cross multiply

$21600=30x$

divide both sides by 30

$720=x$

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3 years ago

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ira [324]

Answer:

volume = area of its × its height

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3 years ago

What is the factored form of this expression? 27m^3 +125n^3

ddd [48]

Answer:

$\left(3m+5n\right)\left(9m^2-15mn+25n^2\right)$

Step-by-step explanation:

$27m^3+125n^3=\left(3m\right)^3+\left(5n\right)^3$

Apply sum of cubes formula: $x^3+y^3=\left(x+y\right)\left(x^2-xy+y^2\right)$

$\left(3m\right)^3+\left(5n\right)^3=\left(3m+5n\right)\left(3^2m^2-3m\times 5n+5^2n^2\right)$

$\left(3m+5n\right)\left(9m^2-15mn+25n^2\right)$

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3 years ago

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