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ludmilkaskok [199]
3 years ago
7

I need help please ..

Mathematics
1 answer:
koban [17]3 years ago
4 0

A is 18

B is 162

C is 18

D is 162

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d1i1m1o1n [39]

Answer:

here's what we know:

a + b = 72

a - b = 26

We can use the elimination method to solve this problem:

a + b = 72

a - b = 26

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Divide both sides by 2:

a = 49

So we now have:

49 + b = 72

and:

49 - b = 26

Subtract 49 from both sides:

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Step-by-step explanation:

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There are 3,659,040 ways he can choose the books to put on the list.

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8 plays

12 nonfiction.

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C_{n,x} = \frac{n!}{x!(n-x)!}

How many ways can he choose the books to put on the list?

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2 from a set of 12

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Multiplication of novels, plays and nonfiction.

T = 792*70*66 = 3,659,040

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