Answer:
You do 2/3 times 30d minus 2/3 times 15. That will give you 20d - 10
Step-by-step explanation:
(2/3x30d) - (2/3x15) = 20d - 10
Answer:
x = ±5
Step-by-step explanation:
4x^2 = 100
Divide each side by 4
4/4x^2 = 100/4
x^2 = 25
Take the square root of each side
sqrt(x^2) = ±sqrt(25)
x = ±5