2 years ago

The volume of the cube is 8 cubic inches. Find its side.

Mathematics

1 answer:

deff fn [24]2 years ago

3 0

Answer:

a = 2

Step-by-step explanation:

Given:

Volume (V) = 8

To find:

The side (edge)

Steps:

a = V^1/3 = 8^1/3 = 2

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Answer:

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Step-by-step explanation:

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Given that k is a positive integer. Find, in terms of k, an expression for Sn, which is the sum of the integers from 2k to 4k in

Elden [556K]

Answer:

$S_n=3k\cdot (2k+1)=6k^2 +3k$

Step-by-step explanation:

k is a positive integer.

Consider an arithmetic sequence:

$a_1=2k\\ \\a_n=4k\\ \\d=1$

First, find n:

$a_n=a_1+(n-1)\cdot d\\ \\4k=2k+(n-1)\cdot 1\\ \\2k=n-1\\ \\n=2k+1$

Now, find the sum of these 2k+1 terms:

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3 years ago

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malfutka [58]

Answer:

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Step-by-step explanation:

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2 years ago