GCF of 9 and 21 = 3
9 + 21 =
3(3 + 7) <==
Answer:
- 4x³ - 33x² + 31x - 3
Step-by-step explanation:
Each term in the second factor is multiplied by each term in the first factor, that is
x²(- 4x + 3) + 9x(- 4x + 3) - 1 (- 4x + 3) ← distribute all 3 parenthesis
= - 4x³ + 3x² - 36x² + 27x + 4x - 3 ← collect like terms
= - 4x³ - 33x² + 31x - 3
Answer:12
for every 2 boys that is 3 girls
there are 4 sets of two boys so you would have 4 sets of 3 girls
4×3=12
I hope this is good enough:
12^2 + 6^2 = x^2
144 + 36 = x^2
180 = x^2
13.416407865 = x
rounded
x = 13.4