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kap26 [50]
2 years ago
8

Se escriben, cada uno en un papel, los dígitos desde el 1 al 9. Si se eligen al azar 2 papeles ¿Cual es la probabilidad de obten

er como diferencia entre los dígitos el número 3?
Mathematics
1 answer:
kati45 [8]2 years ago
5 0
This can be solved by a contingency table to enumerate all possibilities.

  1 2 3 4 5 6 7 8 9
1 - 1 2 3 4 5 6 7 8
2 1 - 1 2 3 4 5 6 7
3 2 1 - 1 2 3 4 5 6
4 3 2 1 - 1 2 3 4 5
5 4 3 2 1 - 1 2 3 4
6 5 4 3 2 1 - 1 2 3
7 6 5 4 3 2 1 - 1 2
8 7 6 5 4 3 2 1 - 1
9 8 7 6 5 4 3 2 1 -

The diagonal entries are void because we cannot pick two tags with the same number.  We count 72 outcomes (excluding diagonal) and 12 of them are threes.  Therefore
Probability that the difference is 3 = 12/72 = 1/6
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Ivenika [448]

Answer:

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7 0
3 years ago
What is the area of the figure abcd
expeople1 [14]

Answer:

66 square inches

Step-by-step explanation:

The area of the figure can be found by adding the area of the rectangle and the triangle together.

The area of a rectangle is found A = l*w. Here l = 10 and w = 6. So the area of the rectangle is 10*6 = 60.

The area of a triangle is found A = 1/2 b*h. Here b = 2 from 12-10 = 2 and h = 6. So the area of the triangle is 1/2 * 2* 6 = 6.

The area together is 60 + 6 = 66 square inches.

4 0
3 years ago
What is 6.8 to a fully simplified mixed number
Alisiya [41]
6.8

= 6 + 0.8

= 6 + 8/10 (simplifying...)

= 6 + (8 : 2)/(10 : 2)

= 6 + 4/5

= 6 4/5 <----- this is the answer.

I hope this helps. =)
6 0
2 years ago
What graphical display is appropriate for comparing the distribution of patient death rates between hospitals that use computer
natka813 [3]
<span> Side-by-side boxplots.
A side by side box lot will provide more useful information than the other graphical displays because it will show the Mean, Range, IQR, Q1 & Q4
</span>
6 0
3 years ago
Molly wants her rectangular rooftop garden plot to have an area of 21 square feet. If she makes the width 5 feet, what must be t
Over [174]
Area = length x width
21 = length x 5
length = 21/5 = 4.2

The length is inversely proportional to the width because as the length increases the width reduces and vice-versa

3 0
3 years ago
Read 2 more answers
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