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polet [3.4K]
3 years ago
13

Which of the following represents a valid probability distribution?

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
6 0

Answer:A

Step-by-step explanation: on edgunity

stepan [7]3 years ago
3 0

Answer:

It's A

Step-by-step explanation:

I just answered the question and got it right

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Please help thanks!!
Minchanka [31]

-2|3x+2| = -12


|3x+2| = 6


3x + 2 = 6


3x + 4


x = 4/3


|3x+2| = -6


3x +2 = -6


3x = -8


x = -8/3


So we have the answers being 4/3 and -8/3

5 0
3 years ago
3.1.3 How far was the hiker at 10:30?
umka21 [38]

Answer:

y = 1400 + 5.2x --- Running cost

y = 25 x --- Monthly income

71 cars

R1775

Step-by-step explanation:

Given

Expenses

Salaries = 1400.00

Others = 5.20 per car

Income

Rate = 25.00 per car

Solving (a): Expression for the running cost

This is calculated as:

y = Salary + Others * x

Where

y = Total running cost

x = number of cars

So:

y = 1400 + 5.20 * x

y = 1400 + 5.2x

Solving (b): Expression for monthly income

This is calculated as:

y = Rate * x

Where

y = Total income

x = number of cars

So:

y = 25.00 * x

y = 25 x

Solving (c): Break even

To do this, we equate the expressions in (a) and (b)

y = y

25x = 1400 + 5.2x

Collect Like Terms

25x -5.2x= 1400

19.8x= 1400

Solve for x

x = \frac{1400}{19.8}

x = 71

Solving (d): How much to break even

Substitute 71 for x in any of (a) or (b)

y = 25 x

y = 25 * 71

y = 1775

<em>Solving (e): There is no question to answer on the "graph"</em>

5 0
3 years ago
The heart beats 103680 per year, how many heart beats per minute?
kompoz [17]

Answer:

Step-by-step explanation:

60 sec= 1 min

60min=1hour

24hours=1day

7days=1week

52 weeks =1 year

24x7= 168hours in a week

168hours x 52 =8736 hours in a year

8736x60=524160mins

524160mins=  1 year

the heart beats 103680 in a year

the heart will beat 524160/103680=5.05555555556 in a minute

6 0
4 years ago
Deana bought 12 packages of batteries. Some of the packages contained 4 batteries and come contained 6 batteries. She bought a t
lana [24]

The answer is C:3 if you have any more questions just let me know I will be happy to help. Have a nice day.


3 0
3 years ago
Find the slope of the line that contains (2, -10) and (-4,2)
Daniel [21]

Answer:

2.

Step-by-step explanation:

7 0
3 years ago
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