You will first have to divide both sides by 4.. so the answer is D
If u need me to show the work just ask :)
First you'll need to find the line of symmetry using the formula x=-b/2a. In this case, you have x=-(4/3)/(2*(-1/3))=(-4/3)/(-2/3). Then take this x value and plug it into your equation to get a y-value. This will be your vertex. Now what I like to do to get the other 2 points needed to graph the parabola is pick an x value 1 unit left of the vertex x value and another x value 1 unit right of the vertex x value. That will give you two points on either side of the vertex, and connecting the three points will create your parabola.
Answer:
86
Step-by-step explanation:
Mean scores of first test =
Standard deviation of first test scores =
Mean scores of second test =
Standard deviation of second test scores =
We have to find if a student scores 29 on his first test, what will be his equivalent score on the second test. The equivalent scores must have the same z-scores. So we have to find the z-score from 1st test and calculate how much scores in second test would result in that z-score.
The formula for z-score is:
Calculating the z-score for the 29 scores in first test, we get:
This means, the equivalent scores in second test must have the same z-scores.
i.e for second test:
Rounding of to nearest integer, the equivalent scores in the second test would be 86.