Answer:
6
Step-by-step explanation:
I just learned this!! :)
Supplementary angles add up to 180°
-> The measure of an angle that is supplementary to a 71° angle is 180° - 71° = 129°
Answer:
Step-by-step explanation:
Given expression as:
We need to simplify the given expression.
Solution:
We have:
Rewrite the expression as:
is a common factor to the first two terms.
Using distributive property we can factor out from the first two terms.
is common factor, so we can factor from the above expression.
Therefore, we get simplified answer as.
(55 + 150 + 325 + 510 + 780 + 990) - (40 + 150 + 300 + 500 + 800 + 1000) = 2810 - 1790 = 20
