The average score of all the students in both classes is 84.
<h3>How to calculate the average?</h3>
The class with 30 students had an average score of 80 on a test. The total score will be:
= 30 × 80
= 2400
A class with 20 students had an average score of 90 on the same test. The total score will be:
= 20 × 90
= 1800
Total scores = 2400 + 1800 = 4200
Number of students = 20 + 30 = 50
The average score will be:
= Total score / Total students
= 4200 / 50
= 84
Learn more about average on:
brainly.com/question/24313700
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A line parallel to x-axis has 0 slope.
Answer:
x = -2 —> y = 4
x= 0 —> y = 1
x= 3 —> y = 1/8
Step-by-step explanation:
<h3>X= –2</h3>
<h3>X= 0</h3>
<h3>X= 3</h3>
I hope I helped you^_^
Proof is something like I have proof of u eating pie. I think it might be D.
