#18: A beauty supply company received an order from a salon for 42 liters of 28% hydrogen peroxide. The company is out of 28% peroxide, but they can make some by mixing 20%
hydrogen peroxide and 30% hydrogen peroxide, both of which they have. How much of each
substance should be mixed together to fill the order?

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

An angle that measures between 90 and 180° is called a(,