Step-by-step explanation:
Given
if x = 5 Then
(x+ 3)²
= ( 5 + 3) ²
= 8²
= 64
Hope it will help :)❤
Answer:
A) (2,20)
B) Yes, Because the line passes through the origin (0,0)
C.) In 10 hours, the cost of electricity is $100
D.) y=10x
Answer:
[1800-100(12)]/12 = (1800-1200)/12 = 600/12 = 50
Step-by-step explanation:
Area of a rectangle = length x height
Area = 135
Height = X
Lenght = x +6
135 = x * x+6
Simplify:
135 = x^2 +6x
Subtract 135 from both sides:
x^2 + 6x - 135 = 0
Solve:
2 numbers when added need to equal 6 and when multiplied equal -135
x = 9 and x = -15
The height can't be a negative number so the height is 9
Length = 9 +6 = 15
Height = 9cm, Length = 15 cm