Side a is 49
side c is 121
121-49 is 72
72 squared is your x
-5/3
Step-by-step explanation:
m1 = 3/5
m1 * m2 = - 1. For a pair of perpendicular line.
Usking that m2 = - 5/3
Answer:
21x + 28
Step-by-step explanation:
open the bracket
=21x + 4
Y = -3. Solved using elimination, although I've never seen the matrix tool before.