Answer:
Yes, it is a valid random sample for if I were to randomly survey 50 people from the phone books of 20 randomly chosen cities.
Step-by-step explanation:
Because a random sample, means, the following: a subset of a statistical population in which each member of the subset has an equal probability of being chosen. And the randomly survey 50 people from the phone books of 20 randomly chosen cities matches this meaning.
Answer:
9 tokens
Step-by-step explanation:![\frac{45}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B45%7D%7B5%7D)
5 = Amount of friends
12 = Amount of tokens that Will takes
57 = total amount of tokens.
45 = amount of tokens left over after Will takes 12.
57 - 12 = 45
![\frac{45}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B45%7D%7B5%7D)
9
Answer:
4/(m-4)^2
Step-by-step explanation:
=(m+2)/(m-4)^2-(m-2)/(m-4)^2
=m+2-m+2/(m-4)^2
= 4/(m-4)^2
This is the correct answer.
Answer:
40
Step-by-step explanation:
b = base
h = height
Area of triangle = 1/2 * b*h
1/2 * 8 * 10
= 40 units^2
Hope it helps
Answer:
First you should see that the 2s cancel out. The equation becomes:
ln( e^{ln(5x)} ) = ln15ln(e
ln(5x)
)=ln15
Use the laws of logarithms, knowing that ln(e) = 1.
\begin{gathered}ln(5x) = ln(15) \\ 5x = 15 \\ x = 3\end{gathered}
ln(5x)=ln(15)
5x=15
x=3
The answer is B.
Hopefully this helps!
Step-by-step explanation:
x=3
Step-by-step explanation:
Given in an equation as
2 ln e^ln5x=2 ln 152lne
l
n5x=2ln15
Divide 2 to get
ln e^ln5x= ln 15lne
l
n5x=ln15
Using log rules for exponents we get
ln 5x = ln 15
Cancel ln to get
5x=15x=35x=15x=3
Hence solutin is x=3