15x^3-12x
Begin with sorting out what 15x^3 and 12x have in common
15 and 12 are both divisible by 3, so divide 3 by both 15 and 12 and put 3 on the outside.
15x^3 and 12x also both have an x in common, so divide the x's (which is basically subtracting them).
3x(5x^2-4)
B
2 + 5 = 7
Mia has 2 out of 7, so her percentage is
2/7 * 100 = 28.6%
Answer:
The number of fours divided by the total number of possibilities. If there are two fours and 8 spaces, the probability is 2/8 = 1/4.
Step-by-step explanation:
<span>When creating a subset of 5 elements from 7 elements, order should not matter. Therefore, we use the combination formula over the permutation formula.
The combination formula given n elements total and r elements used is n! / [r!*(n-r)!]. Substituting 7 for n and 5 for r, we get:
7! / (5!*2!) = 7*6 / 2 = 21
21 subsets can be created</span>
I believe the answer is C because each teacher would get 2 packs for the three that get paper
