It is an points and metal reward

eliminate the parameter of:

x = 4 cos t, y = 4 sin t

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

What describes horizontal cross section of the right rectangle 6m 8m 5m

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac