<span>What is the surface area of the figure?
0.5x0.5=0.25
0.4x0.5=0.2 that for two so do that again 0.2+0.2=0.4
0.25+0.4= 0.65
A
I hope this helps</span>
Answer: $72
Step-by-step explanation: You have to realize that $54 is 75% of the original price, meaning that $54 is 3/4 of the original. Therefore, you must divide 54 by 3 to get 18, which is 25% of the origianl price. Since you now know what 25% of the original price is, you just have to add 18 to 54 to get $72. 72 dollars is 100% of the original price of the coffee table.
The given points
(x₁,y₁) = (2,3)
(x₂,y₂) = (1,-2)
There are 2 formulas we will use.
The first is formula to find the slope, and the second is formula to find the line equation.
To find the slope
m = (y₂ - y₁)/(x₂ - x₁)
To find the line equation
y - y₁ = m(x - x₁)
Find the slope, input the numbers to the formula
m = (y₂ - y₁)/(x₂ - x₁)
m = (-2-3) / (1-2)
m = -5/-1
m = 5
Find the line equation, input the numbers to the formula
y - y₁ = m(x - x₁)
y - 3 = 5(x - 2)
5(x - 2) = y - 3
5x + 10 = y - 3
5x - y = -3 - 10
5x - y = -13
The equation of the line is
5x - y = -13
She would have to score atleast a 74 on the test for her average to be 78