The answer in simplify is (5b)(-3a)= -15ab
<h3>
Answer: A. 21</h3>
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C(n, r) = (n!)/(r!*(n-r)!) is the combination formula
C(7, 5) = (7!)/(5!*(7-5)!)
C(7, 5) = (7!)/(5!*2!)
C(7, 5) = (7*6*5!)/(5!*2!)
C(7, 5) = (7*6)/(2!) ..... note the "5!" terms divided and canceled
C(7, 5) = (7*6)/(2*1)
C(7, 5) = 42/2
C(7, 5) = 21
Simple 7/8 is being multiplied by 8 or 8/1. When that is multiplied together 7/8*8/1, the 8's cancel each other out, and the answer is 7.
Answer:
I’m sorry. I need a lot of more information so then I can understand your answer.
Step-by-step explanation:
Answer:
John bought 2 Snickers bags and 10 Milky Way bags.
Step-by-step explanation:
Let x be number of Snickers bags. Let y be number of Milky Way bags.
Systems of Equations:
4x+5y=58
x+y=12
4x+5y=58
y=-x+12
4x+5(-x+12)=58
4x-5x+60=58
-x=-2
x=2
12-2=10