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Dmitrij [34]
2 years ago
12

Suppose that two fair dice are rolled. find the probability that the number on the first die is a 1 or the number on the second

die is a 4
Mathematics
1 answer:
Bogdan [553]2 years ago
4 0

Answer:

1/36

Step-by-step explanation:

Assuming the dice has 6 sides in total, we can set up a probability for each scenario.

The chances of the dice landing on 1 will be 1/6, since there are 6 total faces. Same goes for the second die and landing on 4.

Now that we have our 2 probabilities, we multiply them to get the final probability. 1/6 x 1/6 = 1/36.

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Mara's family is driving to her grandmothers' house. The family travels 239.4 miles between the hours of 9:10 a.M. To 1:40 p.M.
anzhelika [568]

Answer:

53.2 mph

Step-by-step explanation:

Mara's family travels 239.4 miles between the hours of 9:10 a.m. to 1:40 p.m.

1:40 p.m. is 13:40.

Thus, they traveled for

13 hours 40 minutes - 9 hours 10 minutes = 4 hours 30 minutes

that is 4\frac{1}{2}=4.5 hours.

Use formula:

D=r\cdot t,

where

D = distance

r = rate

t = time.

In your case,

D = 239.4 miles

t = 4.5 hours

Hence,

239.4=4.5r\\ \\r=\dfrac{239.4}{4.5}=53.2\ mph

5 0
2 years ago
Read 2 more answers
What is the value of x?<br><br> 3<br> 4<br> 6<br> 8
bekas [8.4K]
The longer sides of the rectangles should be the same value, so we can make the lower part of the equation equal to 18, which is 4.
We can even find the y value by making it equal to 10, which is 3.
8 0
3 years ago
Read 2 more answers
If 1/3 of a set of numbers is 8 how many numbers are in the total set ?
Eduardwww [97]

Answer:

24

Step-by-step explanation:

1/3 = 8

3/3 = 8*3

7 0
2 years ago
What is 2x – 3 &lt; 7 and 5 – x ≤ 8?
iren2701 [21]

Answer:

\begin{bmatrix}x

Step-by-step explanation:

2x -3 < 7 \\ 5 - x \leq  8\\\\\mathrm{Isolate}\:x\:\mathrm{for}\:2x-3

7 0
3 years ago
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A grocery store estimates that customers arrive at the rate of 15 per hour. The cashier can serve customers at a rate 20 per hou
IrinaK [193]

Answer:

3 customers

Step-by-step explanation:

Rate of arrival (λ) = 15 per hour

Service rate (μ) = 20 per hour

The number of customers in a system given the arrival rate and the mean service rate is given by:

N = \frac{\lambda}{\mu-\lambda}\\

Applying the given data:

N = \frac{15}{20-5}\\N=3\ customers

The average number of customers in the system is 3 customers.

6 0
3 years ago
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