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natima [27]
3 years ago
13

Factor the expression x ^2-14x 45 completely

Mathematics
1 answer:
Keith_Richards [23]3 years ago
8 0

Answer:

(x-9)(x-5) is the answer in two binomials

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Aleonysh [2.5K]

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Given the sequence 7, 12, 17, 22, ...
abruzzese [7]

Answer:

option D is true.

Step-by-step explanation:

Given the sequence

7, 12, 17, 22, ...

An arithmetic sequence has a constant difference 'd' and is defined by

a_n=a_1+\left(n-1\right)d

Computing the differences of all the adjacent terms

12-7=5,\:\quad \:17-12=5,\:\quad \:22-17=5

The difference between all the adjacent terms is the same

so

d=5

as

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Thus, the nth term of the arithmetic sequence will be:

a_n=5\left(n-1\right)+7

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3 years ago
S=n(a1+an)/2 gives the partial sum of an arithmetic sequence. What is the formula solved for an?
Veseljchak [2.6K]
S = n(a1 + an)/2
2S = n(a1 + an)
2S = na1 + nan
nan = 2S - na1
an = (2S - n a1)/n
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Step-by-step explanation:

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C. Because c is makes more sense
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