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larisa [96]
3 years ago
13

How many combinations of a president, vice-president, secretary, and treasurer can be chosen from a group of 12 students?

Mathematics
2 answers:
VMariaS [17]3 years ago
3 0
The answer is a 11,880
balu736 [363]3 years ago
3 0

Answer: 11,880

Step-by-step explanation:

nPr = n!/(n-r)!

12P4 = 12!/(12 - 4)!

12P4 = 12!/8!

9 * 10 * 11 * 12

(In case anyone else gotten confused like I did at first)

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The height of a pyramid is doubled, but its length and width are cut in half. What is true about the volume of the new pyramid?
Aleksandr [31]

Answer:

The new pyramid has a volume that is half the volume of the original pyramid.

Step-by-step explanation:

The volume of a pyramid is given by the following equation:

V = \frac{h*l*w}{3}

In which h is the height, l is the length and w is the width.

Modified volume:

height doubled, length and width cut in half. So

h = 2h, l = 0.5l, w = 0.5w

V_{M} = \frac{2h*0.5l*0.5l}{3} = \frac{0.5*h*l*w}{3} = 0.5\frac{h*l*w}{3} = 0.5V[/tex]

That is

The new pyramid has a volume that is half the volume of the original pyramid.

6 0
3 years ago
N/8 = 11/5 what is n?
Reika [66]

Answer:

n = 88/5

Step-by-step explanation:

Clear out the fractions by multiplying both sides by 8:

n = 88/5

3 0
2 years ago
The surface area of a cylinder is 500 square feet; the lateral surface area is 320 square feet. Give the area of a base.
ohaa [14]

Answer: try your best

Step-by-step explanation:

7 0
3 years ago
What agency is in charge of printing money
gladu [14]
The Bureau of Engraving and Printing (BEP)  is a government agency within the United States Department of the Treasury that designs and produces a variety of security products for the United States government, most notable of which is Federal Reserve Notes (paper money) for the Federal Reserve, the nations central bank...
6 0
2 years ago
Ms. Lunette has 18 students in her class. She wants to send 3 of these students to pick up books for the class.
tigry1 [53]

The number of possible combinations is given by

... C(18, 3) = 18!/(3!(18-3)!) = 18·17·16/(3·2·1) = 816 . . . . possible combinations

_____

There are 18 ways to choose the first one; 17 ways to choose the second one, and 16 ways to choose the 3rd one. The same 3 students can be chosen in any of 3! = 6 different orders, so the product 18·17·16 must be divided by 6 to get the number of possible combinations in which order doesn't matter.

7 0
3 years ago
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