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gogolik [260]
3 years ago
15

There are 50 students in our class. (1) What is the probability that Jack and Mike have the same birthday? (2) What is the proba

bility that no one has the same birthday as the professor? (3) What is the probability that there are two and only two having the same birthday?
Mathematics
1 answer:
Umnica [9.8K]3 years ago
4 0

Answer:

1) 0.00274

2) 0.872

3) 0.00240

Step-by-step explanation:

1) 365/(365×365) = 1/365

= 0.002739726027

= 0.00274 (3 sf)

2) (364/365)^50

= 0.8718182573

= 0.872 (3 sf)

3) [365 × (364^48)]/(365^50)

= 0.002401685062

= 0.00240 (3 sf)

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Ierofanga [76]

Answer:

16.9

Step-by-step explanation:

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2 years ago
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Which of the following is a perfect square?<br> A. 400<br> B. 210<br> C. 37<br> D. 199
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Answer:

400

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Find the distance points p (3,6) and q (7,3) to the nearest tenth?
Vladimir79 [104]
<h3>Answer: 5</h3>

=========================================================

One method is to plot the points P(3,6) and Q(7,3) on the same xy grid.  Plot a third point R at (3,3). See the diagram below.

A right triangle forms in which we can find the legs PR = 3 and RQ = 4. The hypotenuse is found through the pythagorean theorem.

a^2+b^2=c^2

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c^2 = 25

c = sqrt(25)

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This is the length of PQ

-----------------------------------

Or you can use the distance formula which is effectively using the pythagorean theorem just in a slightly different format (though it may not be obvious).

d = \text{Distance from P to Q}\\\\d = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2}\\\\d = \sqrt{(3-7)^2+(6-3)^2}\\\\d = \sqrt{(-4)^2+(3)^2}\\\\d = \sqrt{16+9}\\\\d = \sqrt{25}\\\\d = 5\\\\

8 0
3 years ago
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A store owner had 42 pounds of almonds, 38.5 pounds of walnuts, and 62.5 pounds of peanuts. If the owner splits the peanuts equa
Zina [86]

Here is your answer

12.5 pounds

REASON:

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HOPE IT IS USEFUL

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2 years ago
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Answer:

V=lwh

4x6x3

v=72

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