3 years ago

Which is best estimate of each percent? 21/ of 387?

Mathematics

1 answer:

Phoenix [80]3 years ago

3 0

81.27 is the answer to 21% of 387 so a good estimate would be 82

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Length and width of the rectangle

Doss [256]

The length is 6 and width is 3 or vice versa

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2 years ago

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Multiply. −(−9x4−5x2+2x +13) Express the answer in standard form. Enter your answer in the box.

VikaD [51]

Answer:

9x^4+5x^2-2x-13

Step-by-step explanation:

7 0

3 years ago

PLEASE HELP!!

ElenaW [278]

Answer:

-1 and -3

(n+7)(n-8)

Step-by-step explanation:

1. Find the Zeros

$f(x)=x^{2} +4x+3$

$f(x)=\left(x+1\right)\left(x+3\right)$

$x+1=0\\x=-1\\x+3=0\\x=-3$

2. Factoring Trinomials

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2 years ago

In this figure, a and b are<br>A. vertical<br>B. equal<br>C. complementary.<br>D. supplementary.

Andreas93 [3]

It is a supplementary angle. D because the add up to 180.

8 0

3 years ago

A machine paints 34o toy boats im 3/4 of an hour how many boats can he make per hour

leonid [27]

Here, we can set up a proportion:

34 ÷ 3/4 = ? ÷ 1
34*1 = 34
34÷3/4 = the time needed to build one toyboat

34/3/4 = 45.3333333333

45.3 repeating is not a whole number, so we need to approximate.

45 is the closest whole number,

So.. a machine can paint 45 toy boats per hour.

I really hope that helped! :)

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2 years ago