The standard form of a linear equation is:

A and B are integers
C is a constant
Then, of the given equation the next are writen in standard form:
It’s a straight line, and a straight line equals 180° so it would be:
180=6x+2x+12
180=8x+12
subtract 12 from both sides
168=8x
divide both sides by 8
21=x
the answer is 21 which is the second choice
She should purchase 120ft of material to cover the rectangular room.
12ft x 10ft = 120ft
Answer:
x = 1/4
Step-by-step explanation:
Answer:
A = 0.507 or 29 degrees
Step-by-step explanation:
5 = tanA * 9
inv tan = 5/9
angle A = 0.507
angle A = 29 degrees