As of June 2018, the world population is estimated to be around 7,595,000,000 people. Which of the following shows the population expressed in scientific notation?

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have