Question

Calling all pros.....

Answer 1

60 degree = angle 4

angle 3=90

using the fact that triangle has 180

angle 5=30

Answer 2

180-30=150

Answer 3

sweet thanks, can you help me with problem 2?

Answer 4

OK - you have one angle showing 60 degrees. since line b and c are parallel, angle 4 also equals 60 degrees. Angle 3 is 90 degress, so angle 5 is 30 degrees (rule of 180 degrees in a triangle.) That makes angle 2 (180 - 30 = 150 degrees)

Answer 5

Hint: two equations to help you solve problem two:
6x^2 + 6x = 180
4x^2 + (2x+40) + 6x = 180

Answer 6

is it 4?

Answer 7

I don't think so.
6x^2 + 6x = 180
6x^2 + 6x - 180 = 0
6 (x^2 + x - 30) = 0
x^2 + x - 30 = 0
x^2 + x = 30
So if x = 4, you'd have 16 + 4 = 30. Close, but not quite...