Divide. −2 1/2÷ 6 i need the answer soon

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?