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LenKa [72]
4 years ago
12

1. For a 30 student speech course, in how many ways can the student be selected to give the first 5 speeches?

Mathematics
1 answer:
liraira [26]4 years ago
8 0

Combination problem:

1) 30 C 5 = 142506

2) 13 C 4 = 715

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Multiplying square roots and whole numbers are fairly easy, just combine it like multiply with a variable. Since the rule for a 45-45-90 triangle is to multiply the side length by the square root of 2 to get the hypotenuse then you would multiply 17 by the square root of 2 which will give you answer choice C.

If you encounter a similar problem like this but with the hypotenuse to the side length then you would do the OPPOSITE of multiplying by the square root of 2 (which would be dividing the hypotenuse by the square root of 2).
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