I hope this helps you
volume of sphere =4/3.pi.r^3
![\frac{8*( \frac{c}{c} )- \frac{3}{c} }{2*( \frac{7c}{7c})+ \frac{3}{7c} } \\ \\ \frac{ \frac{8c-3}{c} }{ \frac{14c+3}{7c} } \\ \\ \frac{8c-3}{c} * \frac{7c}{14c+3} \\ \\ = \frac{56c-21}{14c+3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B8%2A%28%20%5Cfrac%7Bc%7D%7Bc%7D%20%29-%20%5Cfrac%7B3%7D%7Bc%7D%20%7D%7B2%2A%28%20%5Cfrac%7B7c%7D%7B7c%7D%29%2B%20%5Cfrac%7B3%7D%7B7c%7D%20%20%7D%20%20%5C%5C%20%20%5C%5C%20%20%5Cfrac%7B%20%5Cfrac%7B8c-3%7D%7Bc%7D%20%7D%7B%20%5Cfrac%7B14c%2B3%7D%7B7c%7D%20%7D%20%20%5C%5C%20%20%5C%5C%20%20%5Cfrac%7B8c-3%7D%7Bc%7D%20%2A%20%5Cfrac%7B7c%7D%7B14c%2B3%7D%20%20%5C%5C%20%20%5C%5C%20%3D%20%20%5Cfrac%7B56c-21%7D%7B14c%2B3%7D%20)
Domain restrictions are what x values make the denominator zero.
a² + 5a - 36 = (a + 9)(a - 4)
a ≠ -9 ; a ≠ 4
Answer:
Adults: 75, girls: 100, Boys: 75
Step-by-step explanation:
2/5 x 250 = 100( girls)
3/10 x 250 = 75 (boys)
250 - (100 + 75) = 250 - 175 = 75 (Adults)