Answer:
D: (2x + 20°) + x° = 180°
Step-by-step explanation:
Supplementary angles add up to 180°, so that rules out A and C as possible answers.
Answer B has only one angle, so that is out too.
2x + 20° represents one angle, and x represents the other angle
Answer:
Step-by-step explanation:
1/7x+1/3x=1
3/21x+7/21x=1
10/21x=1
x=21/10 hour or 2 hours and 1 minute
Answer:2 x -3 x 5 = - 30
Step-by-step explanation:
Go from left to right
