Answer:
Step-by-step explanation:
7x - 9 = x + 3
6x - 9 = 3
6x = 12
x = 2
7(2) - 9 + 2 + 3
14 - 9 + 5
5 + 5 = 10
Answer:
C
Step-by-step explanation:
4x-10+2x+15+x=180
7x+5=180
7x=175
x=25
So 2x+15=65 and 4x-10=90.
90+65+25=180
So your triangle is a right triangle.
To isolate the variable you would divide both sides of the equation by 3, resulting in the equation to answer c = 4/3 or c = 1.3