Answer:
f(4) = 4
Step-by-step explanation:
We have x = 4 so we use the middle line of the piecewise function since 0≤x≤4
f(x) = x
f(4) = 4
Of course. Any positive number can be an absolute value.
5.09 is the absolute value of +5.09 and also of -5.09 .
Answer:
A sample of 499 is needed.
Step-by-step explanation:
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
.
The margin of error is given by:

In this question, we have that:

90% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
How large a sample would be required in order to estimate the fraction of tenth graders reading at or below the eighth grade level at the 90% confidence level with an error of at most 0.03
We need a sample of n, which is found when
. So






Rounding up
A sample of 499 is needed.
Answer:
a) We are given the length of both legs. We need to find the hypotenuse.
b) 40^2 + 71.5^2 = X^2
c) 40^2 + 71.5^2 =
1600 + 5,112.25 = 6,712.25 in.
d) 6,712 inches
Step-by-step explanation:
Answer:
3t - 16
Step-by-step explanation:
(18/12 t-8)*2
First simplify inside the parentheses
(3/2 t -8)*2
Then multiply
3/2t *2 -8*2
3t - 16