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Sonbull [250]
3 years ago
8

How many eight-digit serial numbers contain three of one digit, two of another digit, two of yet another digit, and one of still

another digit?
Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
6 0

It is easier to understand the problem if you create a number based on the criteria and then perform the computations. I am going to choose: 111 22 33 4

There are 10 options for the first "1" and only 1 option for the other two 1's

There are 9 remaining options for the first "2" and only 1 option for the other 2

There are 8 remaining options for the first "3" and only 1 option for the other 3

There are 7 remaining options for the "4"

10 x 1 x 1    x      9 x 1     x      8 x 1      x      7

10 x 9 x 8 x 7 = 5,040

Answer: 5,040

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sineoko [7]
Add 2.2 to each side so 0.3z = 5.2 - 0.5z -0.8z
add 0.5z to each side so 0.8z = 5.2 - 0.8z
add 0.8z to each side so 1.4z = 5.2
divide each side by 1.4 so z = 3.71428571
4 0
3 years ago
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Which equation represents the line that passes through the points (6,-3)and(-4,-9)
galina1969 [7]
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7 0
3 years ago
1252 divided by 48 equals 26 r 4
Ksenya-84 [330]
I assume that in this question, you are asked to evaluate the value(s) of r. To answer that question, dividing 1252 by 48 gives us 26.0833 or 26. Mathematically expressing the solution,
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Then, divide the equation by 26, giving us 1 = r^4. Evaluate r. This will give us answers of +-1. 
7 0
3 years ago
I'm so confused!!!!! Can somebody plz help me!!!plz
ZanzabumX [31]
I would suggest looking up a converter chart, I don't know all of them but I can help with some.
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8 0
3 years ago
The formula that describes an objects motion is given by s=ut+1/2at^2, where s is the distance traveled, u is the initial veloci
attashe74 [19]
We have the following equation:
 s = ut + 1 / 2at ^ 2
 Clear a for the equation:
 1 / 2at ^ 2 = s-ut
 at ^ 2 = 2s-2ut
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 Rewriting:
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 Answer:
 
An equation that represents a in terms of other variables is:
 
C. 2s-2ut / t ^ 2
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3 years ago
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