A
the word 'of' means to multiply
0.45 × 80 = 36
(From top to bottom) wrong, right, right, right, wrong. This is because a irrational*an irrational number is rational, but a rational*an irrational is an irrational number
Answer:
B
Step-by-step explanation:
2x+2x+60=180 because the angles have to add up to 180
So you have
4x+60=180
4x=120
x=30
