Question

The sum of 1st and 20th term of an arithmetic sequence .is 60.
a. What is the sum of 4th and 17th term.
b. Find sum of first 20 terms.
c. If 10th term is 28, find the common difference.

please answer correctly​

Answer 1

hope it will be useful and correct

a ) 60

b) 600

c) 4

Answer 2

Answer:

the ratio of height to width for a tv screen is 9 to 16. how high is a screen that is 30 inches wide

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