Ihave no clue what the answer helo

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

Which number completes the inequality? 2/3 < _ < 7/9

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90