Use substitution to solve the system of equations.

y = 4.5x + 7.5
y = –3.5x – 4.5

Franco wants to double the volume of the cone. what should he do?

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90