Answer:
the answer is number 2
Step-by-step explanation:
207 200
<u>x 8</u> <u>x 8</u>
1656 1600
<u> + 56</u>
1656
It will take her 15 minutes to run 2 kilometers
Answer:
I left my scooter outside the dairy nek minnit.
Answer:
-27, -25, -23
Step-by-step explanation:
Let the three consecutive odd integers be:
First integer = a
Second integer = a + 2
Third integer = a + 4
Two times the least integer = 15 + three times the greatest
2a = 3(a + 4) + 15
2a = 3a + 12 + 15
2a - 3a = 27
a = -27
So the first integer is -27, the second integer is -25 and the third integer is -23.
Actually, this question first involves COMBINATIONS and then PERMUTATIONS.
We first must calculate how many combinations can 5 things can be chosen from 7.
The formula is:
n! / r! *(n -r)! =
7! / 5! * 2! =
7 * 6 * 5! / 5 ! * 2 =
7 * 6 / 2 = 21 ways we can choose 5 things from 7 objects.
Now we must see how many permutations there are of 5 things:
5 * 4 * 3 * 2 * 1 =
120
That means we can put each of the 5 song combinations into 120 "5 song sequences".
So, the total number of ways is
21 * 120 = 2,520 possible ways.
