Answer:

Step-by-step explanation:
If you "open up" the parentheses, you would get:

Which, if you combine like terms, is:

Hope this helps :)
(a)
A right angle sums to 90
6x + 4x + 10 = 90
10 x = 80
x = 8
(b) straight line = 180
5x + 13 + 3x + 7 = 180
x = 20
(c) Sum of triangle angles = 180
3x + 5 + 2x + 18 + 2x + 17 = 180
x = 20
(d) Sum of two angles in right angle = 90
90 = x + 30
x = 60
While both a and c work the most likely answer that they want would be A because it represent the cents already and it shows all possible ways that those two values can be split among 1 dollar
Answer:
-3.87500
Step-by-step explanation:
brainliest!! plez
Could possibly be a geyser