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Ierofanga [76]
3 years ago
8

 A student has a​ one-dollar bill, a​ five-dollar bill, and a​ ten-dollar bill in a box. The student selects a bill from the box

48 times and selects the one dash dollar bill 11 times. What formula should be used to calculate the experimental​ probability? What is the experimental probability of selecting the one dash dollar ​bill? What is the theoretical probability of selecting the one dash dollar ​bill?
Mathematics
1 answer:
viva [34]3 years ago
4 0

Answer:

r/n

22.91%

33.33%

Step-by-step explanation:

To calculate the experimental probability, we must divide the number of times the event occurred by the total number of events, that is:

r / n

r = 11, n = 48

11/48 = 0.2291

In other words, the experimental probability is 22.91%

for the theoretical probability it would be the quantity that there is of that object among the total quantity of objects, in this case it would be:

1/3 = 0.3333

that is, the probability is 33.33%

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6 0
2 years ago
Factorise -75ab² - 15ac
Verdich [7]

Answer:

1)  -15·a·(5·b² + c)

2) h < 4

3) 4·x² - 9

4) 1792

5)  156°

6) 2t cm

7) 2·a·m·(2·m - 3)

8)  10 cm

9) 0.00051

10)  #47,250

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14) 20 cm

15) 12·x²·y²

16) 6.36 × 10⁵

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19) 1034 cm²

20) 29

Step-by-step explanation:

1) The given expression is -75·a·b - 15·a·c

Which can be expressed as -15·a·(5·b² + c)

2) The height, h < 2 × 12/6 = 4

h < 4

3) (2·x - 3)·(2·x + 3) = 4·x² - 9

4) The selling price = 1.12 × 200 × 8 = 1792

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(15 - 2)×180/15 = 156°

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13) N40°W = 320°

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16) 636,000 = 6.36 × 10⁵

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4 0
3 years ago
HELP PLEASE!
Citrus2011 [14]
A table can be used to find the rate of change by giving you a visual representation of how the operation changes over time for example in the link i'm about to post you can see how much more money is earned as more cars are washed, it is showing how much money is being made OVER TIME, hope this helps :)

now to answer your second question, say you would like to know how many miles Tracy ran over a course of 2 hours, the x axis would be the miles and the y axis would be the time, then you would plot the different points on the graph showing the rate at which she is running
'
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