What is the exact value of cos 3pi/4

Match each graph with the correct equation from the equation bank. not all equations will be usef

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?