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
<span>❅☃Happy Holidays!☃❅
</span>
❅☃ Your answer to this equation is 7.26
❅☃ Start with solving 7.26^-9
❅☃ Now solve 7.26^10
❅☃ Now multiply those 2 together.
Answer: Town 1- 5.42%, Town 4- 5.86%, Town 3- 6.63%, Town 2- 7.11%
Step-by-step explanation:
I’m not quite sure I understand but if your saying that -9 =x and -7 =y then the answer would be -59 so the equation wouldn’t be true I hoped I helped :)