Explain the answer to this question and i'll mark brainliest! a private investigator figures that he has a one in ten chance of recovering stolen property for his client. the expenses for the investigation will cost him $10,000, but the recovery fee is $80,000. based only on this information, should the private detective take the job?

a) the expected value is $1,000.00, so the detective should take the job.
b) the expected value is $2,000.00, so the detective should take the job.
c) the expected value is −$2,000.00, so the detective should not take the job.
d) the expected value is −$8,000.00, so the detective should not take the job.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.

An angle bisector ac divides a trapezoid abcd into two similar triangles ? abc and ? acd. find the perimeter of this trapezoid if the leg ab=9 cm and the leg cd=12 cm.