Answer:
answer is 1/4
Step-by-step explanation:
proof is (x-1/2)²= x²-2*1/2*x+1/4= x²-x+1/4
600:450 divided by 10 = 60:45
60:45 divided by 15 = 4:3
so 4:3 x 15 = 60:45 x 10 = 600:450
6. any thang less than 90 degress
7. only 90 degress
8.any thang above 90 but not 180
9. only 180
10. the sum of 2 angels has to make 90 degress
11. the sum of 2 angles has to make 180 degress
