She has solved 6 problems. 21/7 times 2 equals 6.
Answer:

Step-by-step explanation:
we know that
The surface area of a rectangular prism is equal to the area of its six rectangular faces
using the net
The surface area is equal to
![SA=2[(16)(6)]+2[(16)(8)]+2[(8)(6)]](https://tex.z-dn.net/?f=SA%3D2%5B%2816%29%286%29%5D%2B2%5B%2816%29%288%29%5D%2B2%5B%288%29%286%29%5D)


Answer:
All we have to find the fraction of students who preferred green and go from there.
Subtracting blue and red out of the all students,
1- (1/8+1/4)
1- 3/8
5/8 is the remaining students, in order to find 3/5 of the remaining students, we multiply by 3/5
5/8(2/5) = 3/8
3/8 preferred green, which was 15 students. In order to get 100% of the whole population (1), we multiply by 8/3:
15(8/3) = 40
40 students were surveyed in total.
Step-by-step explanation:
Recall to always convert the mixed fractions to "improper" fractions first,
Answer:

Step-by-step explanation:
To find the inverse of a function, swap the places of the x and y variables and solve for y again.
