Answer:
76 on second exam, 80 on third exam
Step-by-step explanation:
First, find the total of all 3 test scores by multiplying the average by the number of elements. 81 · 3 = 243.
The first score is 83 so 243 - 83 = 160. 160 is the other two test scores combined.
To find the other 2 scores, divide 160 by 2, which is 80.
The second score is 4 less so it will be 76. The third score is 80.
Because in both graphs the shaded region is above the curve, the correct option is C.
<h3>
Which pair of inequalities is graphed?</h3>
On the graph we can see two parabolas, such that the y-intercepts of these are:
y = 6
y = -4
So we just need to find the pair of options with these y-intercepts, and noticing that for both cases, we must have:
y > parabola.
Because both shaded regions are above the parabolas.
The only option that meets these requirements is option C. Where there is a mistake, as you can see both curves have dashed lines, and always when we have dashed lines we should use the symbols > or <, while in that option we have a ≥ symbol
If you want to learn more about inequalities:
brainly.com/question/18881247
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Answer:
Step-by-step explanation:
2(x+2) = 10
divide by 2 each side
x+2 = 5
subtract 2 on each side
x = 3
Answer:
-(x^4-9x^3+x+2)/x
Step-by-step explanation:
Simplify the expression