Answer:
Is this a question about the laws of angle of incidence or is it just coordinates
Step-by-step explanation:
Answer: yes
Step-by-step explanation:
Answer:
Im not sure but I think its -5
Answer:
Step-by-step explanation:
r²+8r=−7
Step 1: Subtract -7 from both sides.
r²+8r−(−7)=−7−(−7)
r²+8r+7=0
Step 2: Use quadratic formula with a=1, b=8, c=7.
r=