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Veseljchak [2.6K]
3 years ago
9

How many different ways can a president and vice president be selected from a class of 22?

Mathematics
2 answers:
frozen [14]3 years ago
5 0
The answer is D22,2=22*21=462
Schach [20]3 years ago
3 0

Answer: 462

Step-by-step explanation:

Given: The total number of students in a class = 22

Then to select a president and vice president from the class, we need to use Permutations such that the number of different ways can a president and vice president be selected from a class of 22 is given by :-

^{22}P_2=\frac{22!}{(22-2)!}=\frac{22\times21\times20!}{20!}=21\times22=462

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(01.02 LC)Simplify 9 − (−4).
levacccp [35]

Answer:

13

Step-by-step explanation:

When we subtract a negative, it is like adding

9 -  -4

9 +4

13

3 0
3 years ago
Read 2 more answers
Please help I don't know how to do this
Vinil7 [7]

9514 1404 393

Answer:

  7.84 to 8.16 ounces

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The difference between the actual amount in the bottle and the target amount of 8 ounces can be at most 2% of 8 ounces. That amount is ...

  0.02×8 oz = 0.16 oz

The amount in the bottle can be this much higher:

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or, it can be that much lower:

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2 years ago
Esosa pays $43.19 for 3.7 pounds of salmon. What is the price per pound of the salmon?
joja [24]

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3 0
3 years ago
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Class be boring but anyways what is ( 2 x 2 − 1 )?
mina [271]

Answer:

3

Step-by-step explanation:

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5 0
3 years ago
What is the answer to:
velikii [3]
Weird way to write it but alright! (Sideways) 

19pq^-2 x 5pq^6 = ?

These problems are pretty much single operations between each of the variables / constants. 

So it's like this: 

(19*5)(p*p)(q^-2*q^6) = ?

19*5 is 95.

For p*p remember that when two variables multiply there given powers add. In the case where the powers are not shown (like in the case of p*p) they are always assumed to be 1. So what is 1+1? 2. 

p*p is p^2

For q^-2*q^6 it is the same deal with the previous problem. So now the problem looks like this: 

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So, q^4. 

Our final answer is all of the combined.... like a so: 

95p^2q^4
3 0
3 years ago
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