Answer:
I would help you... But I think that you are supposed to have a picture and there is no picture.
(3x + 1) + (4x - 17) + (5x - 20) = 180
12x - 36 = 180
12x = 216
x = 18
angle a = 55
angle b = 55
angle c = 70
This is an acute isosceles triangle.
So,
First, find 1% by dividing 11 by 4.
11 * 0.25 = 2.75
Since 2.75 = 1%, we can simply move the decimal place two places to the right to get 100%.
2.75 --> 275
4% of 275 is 11.
