Answer:
A
Step-by-step explanation:
X * (X +1) = 420
X^2 + X = 420
X^2 + X -420 = 0
X = 20
Answer:Step-by-step explanation:
The formula of a midpoint between two points A(x₁, y₁) and B(x₂, y₂):
We have the points (3, 17) and (-14, -8).
Substitute:
90-60+50-65=15
$15 in her account