All the interior angles of a triangle always add up to 180 degrees.
3x + (2x + 20) + (4x - 20) = 180
3x + 2x + 20 + 4x - 20 = 180
3x + 2x + 4x + 20 - 20 = 180
10x = 180
x = 180/10
Therefore, x = 18
Answer:
54
Step-by-step explanation:
9/12=x/12
9*12=108
108/2=54
Answer:
it's 0.01 (approx.)
Step-by-step explanation:
brainliest plz
Answer:
-27.9
Step-by-step explanation:
Answer:
24
Step-by-step explanation:
if 12 cars are half of his collection, his entire collection is 12(2) which equals 24
