Photomath is a good one. So is KhanAcademy, but I don't know if they have an app version of the website.
I believe that the answer is B. 62°
Answer:
x = 28
Step-by-step explanation:
The sum of the angles in a straight angle = 180°
Sum the angles and equate to 180
2x + 20 + 3x + 20 = 180
5x + 40 = 180 ( subtract 40 from both sides )
5x = 140 ( divide both sides by 5 )
x = 28
Answer:
around 230
Step-by-step explanation:
91+122+478=691
691÷3= 230.33333333
4/25 = 0.16. 0.16 is equal to 16%
