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marusya05 [52]
3 years ago
15

If 3/5 times x equals 12 then what is x

Mathematics
2 answers:
vovikov84 [41]3 years ago
8 0

Answer:

20

Step-by-step explanation:

12 divided by 3/5 is equal to 20

EleoNora [17]3 years ago
7 0
The answer to the question is 20.
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A nurse at a local hospital is interested in estimating the birth weight of infants. how large a sample must she select if she d
enyata [817]
For large sample confidence intervals about the mean you have: 

xBar ± z * sx / sqrt(n) 

where xBar is the sample mean z is the zscore for having α% of the data in the tails, i.e., P( |Z| > z) = α sx is the sample standard deviation n is the sample size
 
We need only to concern ourselves with the error term of the CI, In order to find the sample size needed for a confidence interval of a given size.

z * sx / sqrt(n) = width. 

so the z-score for the confidence interval of .98 is the value of z such that 0.01 is in each tail of the distribution. z = 2.326348 

The equation we need to solve is:
z * sx / sqrt(n) = width 
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Since n must be integer valued we need to take the ceiling of this solution.
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7 0
3 years ago
I thought of a number. This number double is 7 less than 29. What is my number? hurry please
jekas [21]

Answer:

11

Step-by-step explanation:

11*2=22

29-7 =22

6 0
2 years ago
Read 2 more answers
What is the cost of operating a 3.00-w electric clock for a year if the cost of electricity is $0.0900 per kw · h ?
brilliants [131]
We must take into account the following change of units:
 1kw = 1000w

1 year = 365 days

1 day = 24 hours
 Applying the change of units we have that the electric consumption for 1 year is given by:
 (3) * (1/1000) * (365) * (24) = 26.28 kw * h

 Then, the total cost is given by:
 (26.28) * (0.0900) = 2.3652

 Answer:
 
the cost of operating a 3.00-w electric clock for a year is:
 
$ 2.3652
8 0
3 years ago
What is y=2x+4 and y=-7x+-3
kozerog [31]

Answer:

They are a system of equations?

Step-by-step explanation:

Not sure if this is what you are asking

6 0
3 years ago
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The sum of three consecutive even integers is 102. Find the largest of the three integers.
marissa [1.9K]

Answer to the question is..

32,34,36

largest is 36

7 0
3 years ago
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