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Whitepunk [10]
2 years ago
14

Resolve into factors: 81a3 + 3b3

Mathematics
1 answer:
iren [92.7K]2 years ago
8 0

Answer: (3a+b)⋅(9a  2 −3ab+b2 )

Step-by-step explanation:

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How can you get equation b from equation A. 3(x+2)=18 B. X+2=18
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Answer:

We start with the equation:

A: 3*(x + 2) = 18

And we want to construct equation B:

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where I suppose that X is different than x.

Because in both equations the right side is the same thing, then the left side also should be the same thing, this means that:

3*(x + 2) = X + 2

Now we can isolate the variable x.

(x + 2) = (X + 2)/3

x = (X + 2)/3 - 2

Then we need to replace x by  (X + 2)/3 - 2 in equation A, and we will get equation B.

Let's do it:

A: 3*(x + 2) = 18

Now we can replace x by =  (X + 2)/3 - 2

3*( (X + 2)/3 - 2 + 2) = 18

3*(  (X + 2)/3 ) = 18

3*(X + 2)/3 = 18

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Which is equation B.

3 0
2 years ago
On a<br> paper, graph y &lt; -2x Then determine which answer matches<br> the graph you drew.
Olenka [21]

Answer:

theres the graph

Step-by-step explanation:

3 0
2 years ago
If shoes are $20 each and the markup is 150%, how much will that cost?
MArishka [77]
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(−1)^3⋅(−1)^2<br> simplify
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When simplified the answers results in
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What is the standard form of x/4 - y/3 =1 and 5/x - 2/y=7.
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