Jane had 275 stickers, which she gave to her friends. each friend got five more stickers than the friend before. if the first friend got 5 stickers, how many friends got stickers from jane?

10 friends

Step-by-step explanation:

we know that

The formula of the sum is equal to

where

a1 is the first term

n is the number of terms (number of friends)

d is the common difference in the arithmetic sequence

In this problem we have

----> the common difference

substitute in the formula and solve for n

Solve the quadratic equation by graphing

The solution is n=10

see the attached figure

therefore

She had 10 friends who got stickers

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !