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frosja888 [35]
4 years ago
15

Decide if the situation involves​ permutations, combinations, or neither. explain your reasoning. the number of ways 12 people c

an line up in a row for concert tickets.the number of ways 12 people can line up in a row for concert tickets.
Mathematics
1 answer:
melisa1 [442]4 years ago
8 0
Imagine that 12 people are deciding who is the first in queue. Each of them can be first, then you have 12 ways to choose somebody to be the first. Then remains 11 people and you have 11 ways to select who will be the second in queue. Then from 10 people you can choose in 10 ways who will be the third in queue, from 9 you have 9 ways to choose who will be the 4th and so on.
Using the product rule, you obtain that you have 
12\cdot 11\cdot 10\cdot 9\cdot 8\cdot 7\cdot 6\cdot 5\cdot 4\cdot 3\cdot 2\cdot 1=12!
possible ways <span>line up in a row 12 people for concert tickets. So, this situation involves permutations.</span>

Answer: 12!
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Jack and Nina are graphing two equations on a coordinate grid. Jack has graphed the equation y = 2x.
Pepsi [2]

ANSWER

A) For all x > 0 the graph will be higher.

EXPLANATION

Jack's graph has equation

y=2x

This graph passes through the origin and has slope 2.

Nina's graph is y=5x.

This graph also passes through the origin and has slope 5.

Since 5 is greater than 2, for all x>0, Nina's graph will be higher.

3 0
4 years ago
Read 2 more answers
Suppose that $x,y,z$ are positive integers satisfying $x \le y \le z$, and such that the product of all three numbers is twice t
valina [46]

The possible values of z is an illustration of the sum operator

The sum of all possible values of z is 17

<h3>How to determine the possible sum of z?</h3>

The conditions in the question are:

x <= y <= z

xyz = 2(x + y + z)

Using the trial by error method, the possible values of x, y and z are:

  1. x = 1 , y = 3 , z = 8
  2. x = 1 , y = 4 , z = 5
  3. x = 2 , y = 2 , z = 4

The sum of the z values are:

z = 8 + 5 + 4

Evaluate the sum

z = 17

Hence, the sum of all possible values of z is 17

Read more about the sum operator at:

brainly.com/question/2475734

8 0
2 years ago
What is the equation of a line that passes through the point (5, −4) and is parallel to the line whose equation is 2x + 5y = 10?
3241004551 [841]

 

Rewrite the given equation in slope intercept form:

5 y = 10 – 2 x

y = - 0.4 x + 2

 

Since the two lines are parallel, therefore they have similar slope which is – 0.4, so the equation is:

y = - 0.4 x + b

Given that x = 5, y = -4, find for b:

-4 = - 0.4 (5) + b

b = -2

 

So the answer is:

y = - 0.4 x – 2

or

<span>2 x + 5 y = - 10</span>

7 0
4 years ago
1. Add the following integers
I am Lyosha [343]
A) -18
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C) 40
D) -9
E) -8
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Plsss help me plsss<br> Sos
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