The number is 1/6. 15 minus 3 = 12. 12 times 1/6 is 2
Answer:
A. 3(t+2)
Step-by-step explanation:
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The result is
A. 3(t+2)
Step-by-step explanation:
Here we are given that , the Value of
And we need to find the prove that ,
We know a identity as ,
On cubing both sides of the given equation,
Simplify and then substitute ,
Hence Proved !
The solution is
and 
Step-by-step explanation:
The expression is 
Multiplying the term
by
, we get,

Adding both sides by 1,

Taking factor, we get,

Equating the factors to 0,
and 
Thus, the smaller value is 
The solution is
and 
Answer:
The 99% confidence interval for the percentage of people who own a tablet computer is between 71.59% and 88.41%
Step-by-step explanation:
Confidence interval for the proportion of people who own a tablet:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.

In which
z is the zscore that has a pvalue of
.
For this problem, we have that:

99% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:

The upper limit of this interval is:

Percentage:
Multiply the proportion by 100.
0.7159*100 = 71.59%
0.8841*100 = 88.41%
The 99% confidence interval for the percentage of people who own a tablet computer is between 71.59% and 88.41%