a) **Z**-**score **for **Patrisse** test grade is **0.7288**

b**) z-score** for **Makayla** test grade is -**0.7441**

c) **Patrisse** did **better.**

<h3>What is z- score?</h3>

A **Z-score** is a **numerical measurement** that describes a **value's** **relationship** to the **mean **of a group of **values**.

**Z-score** for **Patrisse **test grade.

**X**= 81.4, = 72.8, = 11.8

**Z= x- **** / **** **

Z= 81.4 - 72.8/ 11.8

**Z= 0.7288**

Now, **z-score** for **Makayla **test grade.

**X= 60.6, **** = 67, **** = 8.6**

Z= x- /

Z= 60.6 - 67/ 8.6

**Z= -0.7441**

Hence, **Patrisse **did **better **as she had **better** z- score.

Learn more about this **concept **here:

brainly.com/question/23261840

**#SPJ1**

**Answer:**

i think 3.33

**Step-by-step explanation:**

r = y/x

x=3, y=30

r= 3/10

r=3.33

**Answer:**

210=85+125-x+25

x= 235-210

x=25 failled in both

**Step-by-step explanation:**

The answer is C because it’s an acute angle

**Answer:**

Lori would have to save $5,760

**Step-by-step explanation:**

Since 320×6=1920, you would have to add to see witch number would be best to save up too. You would get $5,760 when you multiple by 3.If you multiple by 2,it wouldn't give you enough money.