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vodka [1.7K]
3 years ago
7

You have 100 balls and 100 empty boxes. You need to put each of the ball randomly into one of the boxes, what is the expectation

number of the number of empty
Mathematics
1 answer:
prohojiy [21]3 years ago
3 0
You will not have any boxes empty cause there are 100 boxes with 1 ball each equals 100
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What is the Value of x in the equation 2.5x + 10 = x-0.5 ?
marshall27 [118]

Answer: 7

Step-by-step explanation:

2.5x+10=x-0.5\\2.5x-x+10=-0.5\\1.5x=-0.5-10\\1.5x=-10.5\\x=\frac{10.5}{1.5}\\ x=7

7 0
3 years ago
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When I add a number to another number four times as big, the result is 30. find the first number
Alex73 [517]

Answer:

x = 6

Step-by-step explanation:

Let x = first number

x+4x = 30

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5x/5 =30/5

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3 0
3 years ago
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the midpoint of a horizontal line segment is at x=1 if the length of the line segment is 10.5. what absolute value equation coul
egoroff_w [7]

Answer: -4.25 ≤ x ≤ 6.25

Step-by-step explanation:

The midpoint of a segment is located at the same distance of each of the endpoints of the segment.

The midpoint is at x = 1.

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10.5/2 = 5.25

Now, if we want the endpoints to be at the same distance of the midpoint, then the endpoints will be:

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Xmin = midpoint - 5.25

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Xmin ≤ x ≤ Xmax

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8 0
3 years ago
How to make 2700 and 600 a fraction
devlian [24]
I think I may be missing something ... I don't completely understand your question. 
All you need to make a fraction is two numbers and a bar.  The bar can be either
horizontal or slanty.  Then you write one number on top and the other number on
the bottom, and bada-bing, you have a fraction.

You can make fractions like

             2700 / 600
                 27 / 6         
                   9 / 2           (all 3 of these have the same value)

             600 / 2700
                 6 / 27         
                 2 / 9              (all 3 of these have the same value) 
8 0
3 years ago
F(x) = x2 + 4x – 5 is x = -2.
Likurg_2 [28]
If im correct it would be -2(2)+4(-2)-5 which is -4-8-5 which would be -17
5 0
3 years ago
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