Place value. when multiplying by 10 you are moving a decimal, having everything lined up like place value would save you a lot of time.
Answer:
A line is at a degree of 180, so the line 170 is on can give you the degree of the smallest angle: 10. A traingel has a total degree of 180, so 125 + 10 = 135. Take 180 and subtract 135 to get x = 45º
Step-by-step explanation:
Answer:
x = 2 so 8 = 4+x2
Step-by-step explanation: