Answer:
9
Step-by-step explanation:
2x=28-10
2x=18
x=18÷2
x=9
Answer:
Following are the solution to the given equation:
Step-by-step explanation:
Please find the complete question in the attachment file.
In point a:




In point b:


In point c:


In point d:



3
if 30 = 100% and 10% went home sick, so 30*0.10
which is 3.
Using the normal distribution, we got that expression for the z-score of her test score is

<h3>What is Normal
Probability Distribution?</h3>
it's a type of probability distribution which is symmetric about the mean, it gives data near the mean are more frequent than data far from the mean.
Given that mean =
and standard deviation =
X=73
we know that formula of z-score is

Hence Z-score can be calculated as

Using the normal distribution, we got that expression for the z-score of her test score is

To learn more about the normal distribution visit : brainly.com/question/24663213
Answer:
(6,-5),(7,-3),(8,-1),(9,1)
Step-by-step explanation:
a function cannot have two inputs for the same output as a(with 3),b(with9), and c(with5) have two output for 1 input ,they are not functions