Answer:
first one is simnple cross multiply and divide
12*7=4x
84=4x
x=21
2nd same process but more steps
7x=5(x+8)
7x=5x+40
7x-5x=40
2x=40
x=20
Step-by-step explanation:
Answer:
She bought 8 books
Step-by-step explanation:
8.96/1.12
Answer:
A. No
Step-by-step explanation:
Answer:
Step-by-step explanation:
m<1 = m<2
8y - 6 = 7y
8y - 7y = 6
y = 6°
m<2 = 7y = 7(6) = 42°
Answer:
factor 1 = x
factor 2 = x - 5
(factor 1) * (factor 2) = 84
(x) * (x - 5) = 84
x² - 5x = 84
x² - 5x - 84 = 0
(x - 12) (x + 7) = 0
x - 12 = 0 or x + 7 = 0
x = 12 or x = -7
factor 2 = x - 5 = (12) - 5 = 7 or (-7) - 5 = -12
Answer: 12, 7 or -7, -12