One pump can fill a swimming pool in 8 hours and another pump can fill it in 10 hours. If both pumps are opened at the same time, how many hours will it take to fill
the pool?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75