Pls help!!!

Given the image below, find mABC

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Which statement shows that 6.24 is a rational number? a. 6.24 = 6.242424 b. 6.24 = 6.24 c. 6.24 = 68⁄33 d. 6.24 = 66⁄25