Answer:
9
Step-by-step explanation:
7r+18=r²
r²-7r-18=0
factorizing
r²+2r-9r-18=0
r(r+2)-9(r+2=0
(r-9)(r+2)=0
r-9=0
r=9
check
(r²)=(9*9)=81
7r+18=7(9) + 8=81
Answer:
0.65
Step-by-step explanation: Please brainliest!
Answer:
Erm. i would disagree
Step-by-step explanation:
Because they don't look the same or anything like that.
Answer:
11.1 times
Step-by-step explanation: