$\begin{gathered} z-score=\frac{(x-\mu)}{\sigma}_{} \\ \mu=\operatorname{mean} \\ \sigma=s\tan dard\text{ deviation} \\ x=\text{score} \end{gathered}$

Step 2: Substitute the given parameters in the formula

$\begin{gathered} z-\text{score}=\frac{145-165}{40} \\ Z=-\frac{20}{40} \\ Z=-\frac{1}{2} \\ Z=-0.5 \end{gathered}$

Hence, the z-score of a person who scored 145 on the exam is -0.5

8 0

1 year ago

Quick algebra 1 question for 50 points!

Naddika [18.5K]

The line is parallel to y axis

We know that if a line is parallel to y axis

slope=tan90=undefined

So there is no slope

Here it has constant x value as -2

So the equation is

x=-2

Option A

7 0

2 years ago

Read 2 more answers

Study time (hours)

xxTIMURxx [149]

Answer: A B and C

Step-by-step explanation:

I did the usatestprep

7 0

3 years ago

What is the slope of the line that passes through the points shown in the table?

andreyandreev [35.5K]

Answer:

Where is the table???

Step-by-step explanation:

Show the full question

4 0

3 years ago