yaytomath

Ok, so we can start off by expanding each side:

6c+3=84c-9

Add 9 to both sides:

6c+12=84c

Subtract 6c on both sides:

12=72c

Finally, you can divide 72 on both sides to isolate c:

1/6=c

So the answer I think is just 1/6

No,because using the triangle inequality, 12+30 is less than 43, so there is no way it could make a triangle

ok so we break it down 

12! has 4 "3" factors and 1 "9" factor

so that's 1+4=5

15! has 5 "3's" and 1 "9"

so that's 5+1=6

18! has 6 "3's" and 2 "9's"

so that's 6+2=8

21! has 7 "3's" and 2 "9's"

so that's 7+2=9

24! has 8 "3's" and 2 "9's"

so that's 8+2=10 factors of 3

so its basicaly 3^5 + 3^6 + 3^8 + 3^9 + 3^10 

simplify that to (3^5)(1 + 3 + 3^3 + 3^4 + 3^5)

1 + 3 + 3^3 + 3^4 + 3^5 is not divisible by 3

so it's 3^5

I think

x^2 +7x -44

ax^2+bx+c

we already know a is 1, for it's given

x^2+bx+c

b is just sum of roots which is just 11+(-4)=7

x^2+7x+c

c is just the product of the roots which is 11x(-4)=-44

so it's just x^2 + 7x - 44