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allochka39001 [22]
2 years ago
12

suppose we want to choose 2 letters without replacement,from the 4 letters A,B,C,and D (a) how many ways can this be done,if the

order of the choices matters? (b) how many ways can this be done if the order of the choices does not matter?​
Mathematics
1 answer:
mart [117]2 years ago
5 0

Answer:

its a just trust  me

Step-by-step explanation:

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5/10 plus 2/9 simplified
Genrish500 [490]

5/10+2/9=13/18

=1/2+2/9

=9/18+4/18

=9+4/18

answer: 13/18

7 0
2 years ago
Read 2 more answers
Can somebody help me? I’m already failing :(
Yuliya22 [10]

Answer:

125

Step-by-step explanation:

f(1)= the first time (32,000)

n= 9

r= .5 (each term is being mulitplied by .5 to get the next one

We have

32,000*(.5)^(9-1)

32,000*(.5)^8

=125

5 0
2 years ago
(08.02)
alukav5142 [94]

Answer:

the median is 80.5

Step-by-step explanation:

first we put them in order

75,76,77,79,80,81,85,86,90,91

the median is the middle number...however, in cases where there are an even number of numbers, ur gonna have 2 middle numbers....so u take the average of those 2 numbers...basically, u add them and divide by 2.

So we have 2 numbers in the middle.....we add them and divide by 2 to get the median.

(80 + 81) / 2 = 161/2 = 80.5 <== the median

8 0
2 years ago
A statistic is said to be unbiased if
xxMikexx [17]

Answer:

A statistic is said to be unbiased if the mean of its sampling distribution is equal to the true value of the parameter being estimated.

Step-by-step explanation:

A parameter is a number that describes the population.  

A statistic is a number that describes a sample.  

A statistic used to estimate a parameter is unbiased if the mean of its sampling distribution is exactly equal to the true value of the parameter being estimated. For example, the mean of a sample is an unbiased estimate of the mean of the population from which the sample was drawn.

A statistic is biased if its expected value is not equal to the parameter.

8 0
2 years ago
In the table, the parts of strawberry concentrate and the parts of water to prepare a strawberry drink are given. There is a pro
anyanavicka [17]
I think 12. Lol I might be wrong maybe 9 can you list your answers choices?
4 0
3 years ago
Read 2 more answers
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