Answer:
C
Step-by-step explanation:
D. negative 67 because laplace’s expansion
15x<130+20, 15x<150 divided both sides by 15 ,the answer is 10
Answer:
I don't know how to answer this, sorry!
Step-by-step explanation:
.
Answer:
x = 12
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the opposite interior angles
10x-10 = 60 +4x+2
Combine like terms
10x-10 = 62+4x
Subtract 4x from each side
10x-4x -10 = 62 +4x-4x
6x -10 = 62
Add 10 to each side
6x-10+10 = 62+10
6x= 72
Divide by 6
6x/6 = 72/6
x = 12