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3 years ago

7. Below are the steps taken to simplify the expression. Which justification matches Step c of the simplified expression? *

Mathematics

1 answer:

gayaneshka [121]3 years ago

6 0

Answer:

A. Associative property of addition

Step-by-step explanation:

The associative property is about the grouping of terms/numbers in parentheses in an equation.

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Use the identity below to complete the tasks:

quester [9]

Answer:

$a=[2q^{2}r]$

$b=[3s^{2}t]$

Step-by-step explanation:

we have

$8q^{6}r^{3}+27s^{6}t^{3}$

we know that

$8q^{6}r^{3}=(2^{3})(q^{2})^{3}r^{3}=[2q^{2}r]^{3}$

$27s^{6}t^{3}=(3^{3})(s^{2})^{3}t^{3}=[3s^{2}t]^{3}$

therefore

$a=[2q^{2}r]$

$b=[3s^{2}t]$

substitute

$a^{3} +b^{3}=(a+b)(a^{2} -ab+b^{2})$

$[2q^{2}r]^{3} +[3s^{2}t]^{3}=([2q^{2}r]+[3s^{2}t])([2q^{2}r]^{2} -[2q^{2}r][3s^{2}t]+[3s^{2}t]^{2})$

$[2q^{2}r]^{3} +[3s^{2}t]^{3}=([2q^{2}r]+[3s^{2}t])([4q^{4}r^{2}] -6[q^{2}r][s^{2}t]+[9s^{4}t^{2}])$

7 0

3 years ago

Read 2 more answers

Will mark brainliest please help me Explain step by step how to find the equation of a line that goes through the points ( 7, 2

vagabundo [1.1K]

Answer:

Step-by-step explanation:

Put the ordered pairs into the slope formula x=y2-y1/x2-x1 then you will get your slope of the line. once you have your slope pick an ordered pair and put it in point slope y-y1=m(x-x1) distribute and you will get your answer.

5 0

3 years ago

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36 inches = how many degrees

denis-greek [22]

Answer:36 degrees

Step-by-step explanation:

Because when is from zero it is at 0° then you got 36° when you go to 36°.

6 0

3 years ago

Sigma1^30 (3n + 7) = [? ]

andrey2020 [161]

Answer:

1425

Step-by-step explanation:

∑ 1 ^30 (3n+1)=4+7+10+... 30 terms

a=4

n=30

d=7-4=3

$S_{30}=\frac{30}{2}[2 \times 4+(30-1) \times 3]\\=15[8+87]\\=15 \times 95\\=1425$

3 0

4 years ago

Please questions 6,7 and 8

Aleksandr-060686 [28]

I think 6 is 36/100 I'm not real sure if that's the answer your looking for but if you divide it that's what you get

3 0

4 years ago