There are 21 girls at the party.
This is easy since you are already given the binomials. Just multiply them together.
(3x + 3)(3x + 3)
9x^2 + 9x + 9x + 9
9x^2 + 18x + 9.
The coefficient of term b is 18, so B = 18
-17(y - 2) = -17y + 64
Distribute the -17
-17y + 34 = -17y + 64
Add 17y to both sides
34 = 64
Once the variables cancel, and you end up with a FALSE statement, this means there are NO SOLUTIONS.
Okay so to find this you need an equation to find x. for you have 5x+x=180
6x=180 divide both sides by 6 you get x=30 now you can double check. one angle is 30 and one is 5*30 see if you get 180 you 30+5*30 5*30=150+30=180 so it's correct. so x=30 so to find the smallest angles could be x=180-5x
i hope this helped you have an amazing day!!