Which are uses of lasers? Check all that apply. scanning barcodes
transmitting telephone and Internet signals
examining internal body parts
cutting through metals, ceramics, plastics, and cloth
correcting vision problems

He concluded that a heavier object dropped from the same height as a lighter object will land

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b