Orden the Numbers 0.78, 3/4, and 0.8 from last to greaters

Given: △abc, ab=15, bd=9 ad ⊥ bc , m∠c=30°. find: the perimeter of the triangle.

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost