A company has two large computers. The slower computer can send all the company’s email in 60 minutes. The faster computer can complete the same job in 20 minutes. If both computers are working together, how long will it take them to do the job?

Can any one me with the answers to these questions asap?

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)