If a plane is cruising at an altitude of 30,000

feet wants to land at O'Hare, it must begin

its decent so that the angle of depression to

the airport is 7º. How many miles from the

airport must the plane begin to descend?

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

The data represents the semester exam scores of 8 students in a math course. {51,91,46,30,36,50,73,80} what is the five-number summary?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?