Answer:
see below
Step-by-step explanation:
This means to be able to be given a word problem like: Jessica went to the store and spent $2.25 on candy, $2.50 on chips and $2.00 for a soda. How much did Jessica spend?
Given this you are able to write: $2.25 + $2.50 + $2.00 = $6.75
Answer:
28, 56
56
Step-by-step explanation:
a
To solve this, we use the combination rule.
nCk = n!/k!(n-k)! where
n is the number of options (8) k is the number of slots (2).
Assuming the order doesn't matter, then
8C2 = 8! / 2!(8-2)!
8C2 = 8! / 2! 6!
8C2 = 40320 / 2 * 720
8C2 = 40320 / 1440
8C2 = 28
If the order does matter, then we use permutation instead.
nPk = n!/(n-k!) where n = 8 and k =2 8P2 = 8! / 6!
8P2 = 40320 / 720
8P2 = 56
b
We are told that there exist 8 ways to choose a president and a vice president. This means that, after choosing a president from 8 people, there remains 7 people to choose his vice from. Thus, the number of ways to choose a president and his vice are 8 * 7 = 56
I believe that it is 30° if you round it to the nearest 10 but if it is to the nearest hundredth I think its 100?
Answer:
f(2.5)=30
Step-by-step explanation:
f(2.5)=6(2.5)+15 plug in 2.5 for x
f(2.5)=15+15 multiply 2.5 by 6
f(2.5)=30 add
