Christian is going to paint the
wall underneath his staircase.
how many square feet will he
need to paint?

Step-by-step explanation:

You must calculate the area of a right triangle.

The formula of an area of a right triangle:

a, b - legs

We have

Substitute:

answer: 0.95, d

step-by-step explanation:

first, you have to combine the percentages of costumers ordering pizza or salad. 25% (percent of salads ordered) plus 70% (percent of pizzas ordered) is equal to 95%. then, turn 95% into a fraction: 95/100. lastly, divide 95 by 100 and you will get 0.95, d.

the answer is 15% decrease