Answer:
The first 4 guests can arrive in 32,760 ways.
Step-by-step explanation:
The order in which the guests arrive is important. For example, A,B,C,D is a different outcome to B,A,C,D. So we use the permutations formula 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 guests from a set of 15. So
The first 4 guests can arrive in 32,760 ways.
Answer:
No, a unit rate is a rate for one quanity such as 1 drink for 0.75 cents.
Step-by-step explanation:
The answer is <u>2.47</u>; if the number before the second place was 5 or higher, the answer would be 2.48, but it's not.
Answer:
x = 5
Step-by-step explanation:
6x - 2(x + 4) = 12 use distributive property
6x + (-2)(x) + (-2)(4) = 12
6x - 2x - 8 = 12 add 8 to both sides
4x = 20 divide both sides by 4
x = 5