A. 20 Carlos can install in one hour
Answer:
The correct answer is
Step-by-step explanation:
At a benefit concert, eleven bands have volunteered to perform.
There is only enough time for eight of the bands to play.
We need to find how many lineups are possible.
We would need to choose 8 bands out of 11 and their arrangements should be unique. Also that no band can perform twice.
There fore the number of possible line ups are ![\left[\begin{array}{ccc}11\\8\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D11%5C%5C8%5Cend%7Barray%7D%5Cright%5D)
= 165 ways.
Therefore 8 bands out of the 11 can lineup in 165 different ways and perform at the benefit concert.
Answer:
What are the answers? I'm a bit confused what im supposed to answer if there are no answers there
Answer:
63 sandwiches
Step-by-step explanation:
Pete and his friend Danny volunteered to bring sandwiches for lunch at a homeless shelter
They brought 7 loaves of bread
Each loaves have 18 slices
They used 2 slices each to make the sandwich
The first step is to calculate the total number of slices
Sinces 7 loaves of bread are used and each of them contain 18 slices then, the total number of slices can be calculated as follows
= 7 ×18
= 126 slices
Therefore since 2 slices of bread is used to make one sandwich then, the number of sandwiches that was made can be calculated as follows
= 126/2
= 63
Hence 63 sandwiches were made for the shelter
I wish i knew but i need points sorry
