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gulaghasi [49]
3 years ago
7

How do i solve this? 5×{3×[9-(4+1)]}+20÷4×2????​

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
4 0

Answer: 70

Step-by-step explanation:

Solve the equation in the innermost parentheses first that means solving 4+1 =5

The next step would be subtracting 9 from five which gives you 4

Next multiply 3 to 4 which gives you 12

Then multiply 5 with 12 which equals 60

Now you have the equation 60+20/4*2

Solve the division and multiplication part of the equation first because of the rule pemdas which shows multiplication comes before addition

First divide 20/4 which gives you 5 then multiply with 2 which gives you ten

After dividing and multiplying you are left with the equation 60+10

The answer is 70

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ANSWER

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EXPLANATION

Recall the expansion for the factorial notation:

n! = n \times (n - 1) \times (n - 2) \times ...3 \times 2 \times 1

We want to simplify

\frac{9!}{7!}

Let us expand the numerator up to 7! while maintaining the denominator.

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When we cancel out the common factors,we obtain:

\implies \: \frac{9 \times 8  \times 1}{1}

This simplifies to

\implies \: \frac{72}{1}  = 72

The correct answer is B.

7 0
3 years ago
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tia_tia [17]

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Step-by-step explanation:

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3 years ago
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Veronika [31]

Answer:

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Step-by-step explanation:

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