14 i believe, if it’s a mid segment then 7 is half of x.
Answer:
y = 4x - 8
Step-by-step explanation:
y = 4x + b
4 = 4(3) + b
4 = 12 + b
-8 = b
By adding the 1st and third equation together, you get rid of z and end with 7x+8y=13. The second equation will be the second equation and 2 times the first equation, so the will yield 3x+8y=1. Now, you solve this system of equations and get x3, y=-1, and z=-4
Answer:
B= 21
Step-by-step explanation:
A^2 + B^2 = C^2
72^2 + B^2 = 75^2
Solve for B
B = 21