Asap will give brainliest
on a recent mission, the crew of the starship intrepid, left earth and traveled 349 000 000 000 000 000 km (d1) to take supplies to a colony on the third planet orbiting the star arcturus. their next stop was to check out a comet, which was 45 000 000 000 000 km (d2) away from arcturus. after examining the comet, they traveled 427 000 000 000 000 000 km (d3) to return to earth. convert these distances to scientific notation and calculate the total distance the crew traveled.

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.