Answer: 10%
Step-by-step explanation: because if you subtract 50-40 you get 10 and then you just add the % sign and you can cross out d and b.
hope this helps you
Super size gives you the best price per ounce
Let the width be x.
width = x
length = x + 8
The area is 20 ft²
x(x + 8) = 20
x² + 8x = 20
x² + 8x - 20 = 0
(x + 10) (x - 2) = 0
x = -10 (rejected) or x = 2
Width = x = 2 ft
Length = x + 8 = 2 + 8 = 10 ft
Answer: The width is 2 ft and the length is 10ft.
Using a system of equations, it is found that the selling price of each car was:
<h3>What is a system of equations?</h3>
A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
In this problem, the variables are given by:
- Variable x: Selling price of the first car.
- Variable y: Selling price of the second car.
Considering the total profits, and the profit of each car, we have that:
0.4x + 0.35y = 3950.
Cameron paid for the first car was $4,000 less than the price for the second car, hence:
x = y - 4000.
Hence, replacing in the first equation:
0.4(y - 4000) + 0.35y = 3950.
0.75y = 5550
y = 5550/0.75
y = $7,400
x = 7400 - 4000 = $3,400.
Then, the selling prices are given as follows:
More can be learned about a system of equations at brainly.com/question/24342899
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