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Art [367]
3 years ago
9

Find the sum of the first 48 terms of the following series, to the nearest integer.

Mathematics
2 answers:
Usimov [2.4K]3 years ago
5 0

Step-by-step explanation:

∑k=150(3k+2)

First find a1 and a50 :

a1=3(1)+2=5a20=3(50)+2=152

Then find the sum:

Sk=k(a1 + ak)2S50=50(5 + 152)2=3925

Paladinen [302]3 years ago
5 0

Answer:

3672

Step-by-step explanation:

Delta math

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the diffrence of two numbers,a and b,is 21,the diffrence of five times a and two times b is 18 what are the values of a and b
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Answer:

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Step-by-step explanation:

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first number is a

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