the first term of an arithmetic sequence is 17 and the 60th term is 194 and the 65 term is 209. the sum of the first 60 terms is 6330. What is the sum of the 20th and 30th terms?

first is brainliest!!!

What is the measure of ac? 5 units 13 units 26 units 39 units

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52

Which number line represents the solution set for the inequality -1/2x> 24?