In the diagram, rectangle ABCD is split in half by line segment AC. What is the value of tan x?

Which number produces a rationale number when multiplied by 1/5

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?