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: The y-intercept is (0, -10)
Step-by-step explanation:
-2 * 1/4 = -1/2
-1/2 * 1/4 = -1/8
-1/8*8 1/4 = -1/32
Correct choice is the first one.
Solve for x:
x + 2 = −4
x
+
2
=
−
4
x = −2
x = −2
x = −6
x = −6
x = 6
x = 6
x = 2