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Whitepunk [10]
3 years ago
14

Resolve into factors: 81a3 + 3b3

Mathematics
1 answer:
iren [92.7K]3 years ago
8 0

Answer: (3a+b)⋅(9a  2 −3ab+b2 )

Step-by-step explanation:

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We are given the ratio of 1/2 inch: 18 miles

Multiply both sides of the ratio by 2. I'm doing this so that the "1/2" turns into "1"
So we go from this ratio
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to this ratio 
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which means that every inch on paper represents 36 miles in real life

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The question is now: if two towns are 2.5 inches apart on paper, then how far are they in real life? (note: 2.5 is the decimal form of 2 and a half)

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3 years ago
The following equation is true for all values of x. Write the number that completes the equation. Show your work.
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6 0
3 years ago
What is the area of the figure?
zalisa [80]

Answer: 57 ft²

Step-by-step explanation:

Find the areas of the two individual rectangles and then add that up to find the area of the figure:

Rectangle A:                                                             Rectangle B:

= Length * Width                                                       = 11.5 * 3

= 7.5 * 3                                                                     = 34.5ft²

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3 years ago
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PLEASE HELPPPPP WILL MAKE BRAINLYIEST
satela [25.4K]

Answer:

If your install Bratleby on your device, It will help you with this. But you will have to put in an email. and it will give 10  questions to answer for free. Sorry that I cannot help you with this.

Step-by-step explanation:

5 0
3 years ago
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