Answer:
Step-by-step explanation:
Since your population are the students in math class, you can use the z-score formula in order to comparing the two math test scores. Where is the mean for the class, is the standars deviation and x is Mary score.
For the first test , so ,.
For the second test , so ,
Mary do better in the second test, relative to the rest of the class (because , it means the second score is nearer to the mean score of the class than the first one )
Answer:
---
Step-by-step explanation:
The 4 is representing the ones place.
-hope it helps
x-intercept means f(x) = 0
(x-8)(x+9) = 0 ⇒ x = 8 or x = - 9
There are two points which are x-intercepts. They are (8,0) and (-9,0).
<h3>
Answers: integer and rational number</h3>
Explanation:
The set of whole numbers is {0,1,2,3,4,...} which consists of positive values and 0. So we can cross "whole numbers" off the list since -5 is negative.
The set of integers is {..., -3, -2, -1, 0, 1, 2, 3, ...} which now considers the negative whole numbers. The value -5 is in this list. So -5 is an integer.
It's also a rational number because -5 = -5/1 showing it is a fraction or ratio of two integers.