Need help on these questions please ASAP!!

Acylinder has volume 45π and radius 3. what is it’s height?

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42