Answer:
first one with -1...21
Step-by-step explanation:
only one that follows quadratic formula format
Answer:
r=-3
Step-by-step explanation:
Answer:
Step-by-step explanation:
Answer:
x=28
Step-by-step explanation:
vertical angles are congruent
3x-12=72
3x=84
x=28
42.87*0.15= $6.43 rounded