3 years ago

Which answer correctly estimates the product of 3.09 × 304.87? A. about 9.0 B. about 9.9 C. about 90 D. about 900

Mathematics

2 answers:

KiRa [710]3 years ago

8 0

The answer is D) About 900

kherson [118]3 years ago

4 0

Estimation is : 3 x 300 = 900

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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,
$=4\left(r+4\right)\left(r-4\right)$

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-TetraFish

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3 years ago

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Sveta_85 [38]

Answer:

H) -5x - 50

Step-by-step explanation:

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