12 I think, because area = base times height, so if you work backwards and divide 84 by 7 it equals 12
Answer:
≈83.33%
Step-by-step explanation:
400/480 = 5/6
56 * 100 = ≈83.33%
a f(a) is the function f(x) where x is replaced by a.
So we have
(3x^2 + x + 3 - (3a^2 + a + 3)) / ( x - a)
= (3x^2 - 3a^2 + x - a) / (x = a) Answer
b (3(x + h)^2 + x + h + 3 - (3x^2 + x + 3)) / h
= (3x^2 + 6xh + 3h^2 + x + h - 3x^2 - x - 3) ) / h
= (6xh + h + 3 h^2) / h
= 6x + 3h + 1 Answer
16x^2 -1 = 0
16x^2 = 1
x^2 = 1/16
x= 1/4
