Pure acid is to be added to a 10 % acid solution to obtain 99 L of a 20 % acid solution. What amounts of each should be used?

Paul is creating a pizza with a choice of crust, one type of cheese, one meat, and one vegetable topping.

Multiply (-4) (-2) (-5). A: - 40 B: - 8 C: 8 D: 40

160% of what number is 70

Solve for x - 3x+6=2x-24 -30 -6 6 30

What number is represented by 2.55 x 10-4? 255 2,550 0.255 0.000255

A company ordered 10 boxed lunches from a deli for $74.50. each boxed lunch cost the same amount. which equation represents the proportional relationship between y, the total cost of the nixed lunches and x, the number of boxed lunches? A) 7.

Change the following numbers into percent 0.05

Calculate the discriminant: 5x² + 2x - 2 = 0

The Taco Shop sold 198 lunches Friday. This number is 3 more than 3 times the number they sold Monday. Let n represent the number of lunches sold Monday.

Susan received a $90 gift card for a coffee store she used it buying some coffee that cost $8.66 per pound after buying the coffee she had $64.02 left on a card how many pounds of coffee does she buy?