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Free_Kalibri [48]
3 years ago
5

Find the product. (3n - 1)(7n-7)

Mathematics
1 answer:
slega [8]3 years ago
6 0

Answer:

21n² - 28n + 7

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor, that is

3n(7n - 7) - 1(7n - 7) ← distribute both parenthesis

= 21n² - 21n - 7n + 7 ← collect like terms

= 21n² - 28n + 7

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What is the mean of these groups of numbers? 1,1,5,3,6,6
igor_vitrenko [27]
Mean
add up numbers and divide by how many there are
(1+1+5+3+6+6)/7=3 and 2/3
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3 years ago
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A cylinder has a radius of 6 inches and a height of 15 inches. What is the surface area of the cylinder? Express the answer in t
shutvik [7]

Answer:

The surface area for this cylinder is 252*pi square inches.

Step-by-step explanation:

The surface area of a cylinder can be calculated by using the following formula:

surface area = 2*pi*r² + 2*pi*r*h

Applying the data from the problem, we have:

surface area = 2*pi*(6)² + 2*pi*(6)*15

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3 years ago
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Help me i have been trying to solve it. plzz
siniylev [52]
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3 0
3 years ago
How can you find the answer to 5 x 1/3 by fining the answer to 5 x 3
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3 0
3 years ago
Distribute and simplify the radicals below (√12+6)(-√8-√2)
Hatshy [7]

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Answer:

-6 \sqrt {6} -18 \sqrt {2}

8 0
3 years ago
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