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I am Lyosha [343]
3 years ago
10

The sum of first three terms of an arithmetic series is 21. If the sum of the first two terms is subtracted from the third term

then it would be 9. find the three terms of the series​
Mathematics
1 answer:
Ronch [10]3 years ago
5 0

Answer:

The terms are - 1, 7 and 15.

Step-by-step explanation:

Let the terms be a-d, a and a+d

ATQ, a-d+a+a+d=21, a=7. a+d-(a+(a-d))=9. d=8. The terms are - 1, 7 and 15.

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Step-by-step explanation:

Simple Interest Equation (Principal + Interest)  is A = P(1 + rt), where:

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Dylan deposited 15,000 in an account that pays 7.50% simple interest for 3.5 years. We need to find the ending balance in the account

∵ Dylan deposited 15,000 in an account

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Learn more:

You can learn more about interest in brainly.com/question/11149751

#LearnwithBrainly

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