Answer:
x=9
Step-by-step explanation:
The two labelled angles are equal, so we can construct an equation. Then, we solve the equation for x.

First, we subtract 4x from both sides. Next, we add 25 to both sides. Finally, we divide both sides by 3.
a. Find the probability that an individual distance is
greater than 214.30 cm
We find for the value of z score using the formula:
z = (x – u) / s
z = (214.30 – 205) / 8.3
z = 1.12
Since we are looking for x > 214.30 cm, we use the
right tailed test to find for P at z = 1.12 from the tables:
P = 0.1314
b. Find the probability that the mean for 20 randomly
selected distances is greater than 202.80 cm
We find for the value of z score using the formula:
z = (x – u) / s
z = (202.80 – 205) / 8.3
z = -0.265
Since we are looking for x > 202.80 cm, we use the
right tailed test to find for P at z = -0.265 from the tables:
P = 0.6045
c. Why can the normal distribution be used in part (b),
even though the sample size does not exceed 30?
I believe this is because we are given the population
standard deviation sigma rather than the sample standard deviation. So we can
use the z test.
Solving the inequality
we get 
Step-by-step explanation:
We need to solve the inequality 
Solving:

Multiplying 4 with terms inside the bracket.

Adding -36 on both sides:

Adding -6z on both sides


Divide both sides by 6

So, solving the inequality
we get 
Keywords: Solving inequalities
Learn more about Solving inequalities at:
#learnwithBrainly
Answer:
1 page takes her 22.5 minutes for each page
Step-by-step explanation:
Answer:
It can be an answer to many things.
Step-by-step explanation:
There needs to be some sort of picture or other item to explain what is going on.