Answer:
9 and 6
Step-by-step explanation:
Write down the system.
The two numbers are x and y.
We are therefore given:
x+y=15
x-y=3
I will solve this for elimination since it is already setup for it.
I will add the columns since both equations are in the same form.
2x+0y=18
2x =18
Divide both sides by 2:
x =18/2
Simplify:
x =9
So if x+y=15 and x=9, then y=6.
The two numbers are 9 and 6.
Test:
9+6=15
9-6=3
Answer:
18.4
Step-by-step explanation:
By using the pythagorean theorem (a^2 + b^2 = c^2)
Answer:

And we can find this probability using the normal standard distribution and we got:

Step-by-step explanation:
For this case we have the foolowing parameters given:
represent the mean
represent the standard deviation
the sample size selected
And for this case since the sample size is large enough (n>30) we can apply the central limit theorem and the distribution for the sample mean would be given by:

And we want to find this probability:

We can use the z score formula given by:

And we can find this probability using the normal standard distribution and we got:

Idk depends how thick the book are
The volume of a 6 mi sphere = V = 4/3 πr³.