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ludmilkaskok [199]
2 years ago
6

3 bananas are to be selected from a group of 9. In how many ways can this be done?

Mathematics
2 answers:
lianna [129]2 years ago
7 0
9C3 =9!/((9-3)!3!) =84 ways
Lyrx [107]2 years ago
7 0

Answer: 84

Step-by-step explanation:

The formula to calculate the number of ways to select x things from n things is given by :-

^nC_x=\dfra{n!}{{!(n-x)!}

Now, if 3 bananas are to be selected from a group of 9, then the number of ways  will be  

^9C_3=\dfrac{9!}{3!(9-3)!}=\dfrac{9\times8\times7\times6!}{6\times6!}=84

Hence, the  number of ways to select 3 bananas from a group of 9 =84

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When multiplying numbers of the same base , we add the powers.
Example:
2^2 * 2^3 = 2^(2+3) = 2^5

For the givens:
The seventh root of x can be written as x^(1/7)
Now, we need to multiply x^(1/7) by x^(1/7) by x^(1/7)
These numbers have the same base which is "x", therefore, we will just add the power.
This means that:
x^(1/7) * x^(1/7) * x^(1/7) = x^(1/7 + 1/7 + 1/7) = x^(3/7)

Therefore, the correct choice is the first one: x^(3/7)

5 0
3 years ago
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lord [1]

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(x-3)(x-6)

Step-by-step explanation:

Fill in g into f and simplify:

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4 0
3 years ago
Which of the following is solution set of 4x = y and 2x2 − y = 0? A. {(0.5, -0.5), (2, -8)} B. {(0, 0), (2, 8)} C. {(1.5, 2), (8
sergiy2304 [10]
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Therefore, solution set is {(0, 0), (2, 8)}
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3 years ago
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Answer:

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Answer:

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Step-by-step explanation:

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2. To convert from 'mg' to 'dg', you must divide by 100 because 'dg' consists of 100 mg.

3. To convert from 'mg' to 'g', you must divide by 1000 because 'g' consists of 1000 mg.

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