Answer:
im not sure what to do
Step-by-step explanation:
Distribute the outside terms through the terms inside the parenthesis.
2(x - 4) + 7 = 3
2x - 8 + 7 = 3
Combine like terms.
2x - 1 = 3
Add 1 to both sides of the equation.
2x = 4
Divide both sides by 2.
x = 2
Answer:
r = 3.2
Step-by-step explanation:
If A varies inversely with the square of r, then A = kr^2
75 = k*4^2 = 16k
k = 75/16
Now A = (75/16)*r^2
48 = (75/16)*r^2
r^2 = 48(16/75) = 256/25
r = = 16/5 = 3.2
Answer:
it isn't easy because there are no options to choose from.