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Marizza181 [45]
3 years ago
9

A total of 28 students have entered a spelling contest. There are 6 medals for first through sixth place will be awarded. In how

many different ways can the medals be awarded?
A. 178,340
B. 376,740
C. 271,252,800
D. 96, 860

(I am terrible at probability questions.)
Mathematics
1 answer:
zhuklara [117]3 years ago
4 0
This is a permutation / combination problem.

For the 1st position there are 28 possibilities.

<span>For the 2nd position there will be 27 possibilities left.</span>

For the 3rd position there will be<span> 26 possibilities left</span><span>.
</span>
For the 4th position there will be 25 possibilities left<span>.
</span>
For the 5th position there will be 24 possibilities left<span>.
</span>
For the 6th position there will be 23 possibilities left<span>.
</span>
Total = 28*27*26*25*24*23 = <span>271,252,800</span>

C. 271,252,800
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Blababa [14]

The question is:

The indicated function y1(x) is a solution of the associated homogeneous equation. Use the method of reduction of order to find a second solution y2(x) of the homogeneous equation

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Step-by-step explanation:

Given the homogeneous differential equation

x²y'' - 7xy' + 16y = 0

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u' = A/x

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Since

y2 = uy1

We have

y2 = (Alnx)x^4 = (Ax^4)lnx

Therefore, the second solution y2 is

A(x^4)lnx

6 0
3 years ago
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