Answer:
Step-by-step explanation:
Answer:
35 pages
Step-by-step explanation:
First simplify the equation.
P = (50 + 0.6x) + 0.12(50 + 0.6x)
P = 50 + 0.6x + 0.12*50 + 0.12*0.6x
= 50 + 0.6x + 6 + 0.072x
= 50 + 6 + 0.6x + 0.072x {Combine the like terms}
P = 56 + 0.672x
Amount that Chris has with him is $ 80
56 + 0.672x = 80
0.672x = 80 - 56
0.672x = 24
x = 24/0.672
x = 35pages
Answer:
16/25
This is because you have to make it into a percent which is 64% then you have to do 64/100 and simplify it.
Answer:
step by step as shown
Step-by-step explanation:
f(x) = x²-1
f(5) = 5² - 1 = 24
f⁻¹(x)
y = x²-1
x = y² - 1 swap x and y
y² = x+1 ... x+1 ≥ 0 x≥-1
y = √x+1
f⁻¹(x) = √x+1
f⁻¹(8) =√8+1 = √9 = 3
Answer:
(4, 5)
Step-by-step explanation:
y = 2x - 3
y = 7 - 0.5x
y is already isolated on both equations, set them equal to each other:
2x - 3 = 7 - 0.5x
add 3 to both sides:
2x = 10 - 0.5x
add 0.5x to both sides:
2.5x = 10
divide by 2.5:
x = 4
plug in 4 for x on either equation and solve for y:
y = 2(4) - 3
y = 8 - 3
y = 5
(4, 5)