Answer:
5
because it is the largest positive integer that all of the products can be divided by.
-(11+sqrt(121-4*18))/2 = -(11 +sqrt(49))/2 = -9
Or
-(11-sqrt(121-4*18))/2 = -(11-sqrt(49))/2 = -2
D is the answer
1 base. The triangular pyramid has 1 base, and that is the square at the bottom. Hope this helps.
Subtract 15 from both sides that gets rid of 15 and your left with 3b =30b divide 3 on both sides and the answer is 10
