Answer: 120 schools
Step-by-step explanation:
3,120 students competed in a statewide athletic competition and each participating school district sent 26 students to the athletic competition.
Total number of students= 3120
Total students sent by each school= 26
Number of participating school districts= Total number of students ÷ he students sent by each school
= 3120 / 26
= 120 students
There are 120 participating schools in the competition
The answer is 1/2 the last one
Answer:
Option B
Step-by-step explanation:
Here we have to apply " combination and permutation. " It is given that the drama club had to choose three booths from a selection of 9, considering the possible ways to choose so. This is a perfect example of combination. In nCr, n corresponds to 9, respectively r corresponds to 3.
![\mathrm{n\:choose\:r},\\nCr=\frac{n!}{r!\left(n-r\right)!},\\\\\frac{9!}{3!\left(9-3\right)!} =\\\frac{9!}{3!\cdot \:6!} =\\\\\frac{9\cdot \:8\cdot \:7}{3!} =\\\frac{504}{6} =\\\\84\\\\Solution = Option B](https://tex.z-dn.net/?f=%5Cmathrm%7Bn%5C%3Achoose%5C%3Ar%7D%2C%5C%5CnCr%3D%5Cfrac%7Bn%21%7D%7Br%21%5Cleft%28n-r%5Cright%29%21%7D%2C%5C%5C%5C%5C%5Cfrac%7B9%21%7D%7B3%21%5Cleft%289-3%5Cright%29%21%7D%20%3D%5C%5C%5Cfrac%7B9%21%7D%7B3%21%5Ccdot%20%5C%3A6%21%7D%20%3D%5C%5C%5C%5C%5Cfrac%7B9%5Ccdot%20%5C%3A8%5Ccdot%20%5C%3A7%7D%7B3%21%7D%20%3D%5C%5C%5Cfrac%7B504%7D%7B6%7D%20%3D%5C%5C%5C%5C84%5C%5C%5C%5CSolution%20%3D%20Option%20B)
Hope that helps!
9 times it will be 98 rhr
-1(x)= 5x+15inverse of the function