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NikAS [45]
4 years ago
14

which of these is an example of a discrete random variable? A. Time worked on a job B. Weight of a child C. First digit of a pho

ne number D. Length of a fish
Mathematics
2 answers:
sattari [20]4 years ago
8 0

A discrete random variable has a countable number of possible values. In this case I am pretty sure it is either none of the above or maybe the phone one.

sergiy2304 [10]4 years ago
4 0

es la c

agddfuygafgaufkgydkuyfegag

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Find the point of intersection algebraically for the system of equations. Make sure to write your answer as an ordered pair.
Vsevolod [243]

Answer:

Step-by-step explanation:

hello :

1) the system is : y=5x+4

                           y = 2x+1

so :5x+4 =2x+1

5x-2x=1-4

3x= -3      so : x= -1     but y =2x+1 put x=-1 you have : y =-1

the solution : (x,y) =( -1, -1)

2)  the system  is :     x + y = 4                                    

                                4x -y = 1

means :   y = - x+4    (line red)

               y= 4x-1     (line blue)  

graficly : intrsection is : (x,y) =(1 ,3 )

4 0
4 years ago
Which of the following weighs least?
stellarik [79]
The correct answer is Choice E: 1 milligram.

The prefix milli means "1/1000". That means a milligram is 1/1000th the size of a gram. All of the other weights in the list are larger.
8 0
3 years ago
I need help with the first one
alekssr [168]
The answer is d because if you multiply-5x2 and then subtract 1 you get -11
8 0
3 years ago
Which equation represents a proportional relationship that has a constant of proportionality equal to -10
stira [4]

Answer:

y =  - 10x

Step-by-step explanation:

A proportional relationship has equation:

y = kx

where k is the constant of proportionality.

Since we are looking for a proportional relationship that has a constant of proportionality equal to -10, we have k=-10.

We substitute k=-10 into the equation to get:

y =  - 10x

Therefore the correct choice is

y =  - 10x

7 0
3 years ago
Read 2 more answers
The sum of two numbers is 18 their difference is 8
hram777 [196]

<em><u></u></em>

<em><u>Answer:</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>13 and 5</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>Step-by-step explanation:</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>x+y=18</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>x-y=8</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>_____</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>2x=26</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>x=13</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>So the first number must be 13</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>13+y=18</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>y=5</u></em>

<em><u></u></em>

<em><u></u></em>

<u><em>And the second number must be 5</em></u>

3 0
3 years ago
Read 2 more answers
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