Answer:g=20
Step-by-step explanation:
-2g+26+15=1
-2g+41=1
-2g=1-41
-2g=-40
-40/-2= 20
Answer:
Yes it is because it's terminating.
Step-by-step explanation:
$3.45 is the cost of one gallon. So 3.45 times 12.51 gallons = 43.1595, rounded to $43.16
Answer:
f
(
x
)
=
x
^2 +
1
f
(
x
)
=
7
x^
2 +
5
x
−
4
f
(
x
)
=
4
(
x
−
3
)
^2
Step-by-step explanation:
Answer:
And we can find this probability with thie difference:
And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:
Where
and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability with thie difference:
And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.