1. insert a digit to make numbers that are divisible by 6 if it is possible 531_5
2. insert a digit to make numbers that are divisible by 6 if it is possible
237_8

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Will mark brainliest! ( explain the answer too, it can be one sentence)

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.