2 years ago

The question is in the image i need help

1 answer:

xenn [34]2 years ago

7 0

hope it helps you!!!!!!!!!!

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Tomtit [17]

For this case we have that each student takes 8 \ frac {3} {4} minutes to perform and play 3 songs. Then, we convert the mixed number to a fraction:

$8 \frac {3} {4} = \frac {4 * 8 + 3} {4} = \frac {32 + 3} {4} = \frac {35} {4}$

Thus, each student takes $\frac {35} {4}$ minutes.

If there are 9 students in the recital then we have:

$9 * \frac {35} {4} = \frac {315} {4} = 78.75$ minutes.

Thus, the recital lasts at least 78.75 minutes.

Answer:

The recital lasts at least 78.75 minutes.

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astraxan [27]

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saul85 [17]

$\displaystyle \binom{12}{4}=\dfrac{12!}{4!8!}=\dfrac{9\cdot10\cdot11\cdot12}{2\cdot3\cdot4}=495$

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tatuchka [14]

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e-lub [12.9K]

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