h = 10
It's D) 10
Good luck! (:
Answer:
awesome
Step-by-step explanation:
Answer:
no lol :))))
Step-by-step explanation:
Answer:
840 ways.
Step-by-step explanation:
The order is important, which means that the permutations formula is used to solve this question.
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:
In this question:
4 items from a set of 7, so:
840 ways.
A+b=13
a-b=7
add the two equations using system of equations
2a=20
a=10
10+b=13
b=3