Is pi over 2 irrational

If x:5 = 18:30, then x =

Terri has a coupon for 1/3 off the regular price, t, of a tent. What expressions represent the price of the tent using the coupon. Select two correct expressions: a. 1/3t b. 2/3t c. t-1/3 d t-2/3 e t-1/3t f t-2/3t

A truck sold 278 hotdogs last month. this month they sold 315. what is percentage change

435 is 15% of what number?

4. 65% of 80 is what number?

on a graph would the x-axis be sideways or straight up and would the y-axis be straight up or sideways

What is the inverse of f (x) = -x-1

Angel beats it's wings about 53 times each second. about how many times does Angel beat in 5 seconds

Marco and Nadia each collect money that has spilled from a truck. Marco collects $184.50. Nadia collects 26 percent more than Marco does. How much money does Nadia collect? $185.76 $232.34 $220.93 $232.47

A lamp costs $87.75. If the sales tax is 8%, how much tax would be paid on this lamp?