Answer:
hope you know Distance formula
Step-by-step explanation:
Think the answer is

units
N is greater than or equal to 5
So that is the first one.
Hope that help you.
Answer:
x = 
Step-by-step explanation:
Given
5xy + a = c ( isolate 5xy by subtracting a from both sides )
5xy = c - a ( isolate x by dividing both sides by 5y )
x = 
Answer:
C 14
Step-by-step explanation:
7 ×4 ×1/2=14
because triangle area formula is A=1/2×B×H
B= base
H= height
Step-by-step explanation:
f(x) = x² - 2x - 3
g(x) = 4x²
f(g(x)) = f(4x²)
f(4x²) = (4x²)² - 2(4x²) - 3
= 16x⁴ - 8x² - 3