The graph shows a slope 7/10, which is 0.7. Only 8/11 (=0.72727) is greater than 0.7, so the answer is y=(8/11)x
Scores on an AP Exam at a local high school are recorded in the table. What was the average score?
Answer: D) 4.266 is correct
Explanation:
We are given the below frequency table:
Score Frequency
1 | 0
2 | 3
3 | 4
4 | 16
5 | 22
Let's denote the score by
and frequency by
.
The average formula is:
![Average=\frac{\sum fx}{\sum f}](https://tex.z-dn.net/?f=Average%3D%5Cfrac%7B%5Csum%20fx%7D%7B%5Csum%20f%7D)
![=\frac{(1\times0) + (2\times3)+(3\times4) +(4\times16) + (5\times22)}{0+3+4+16+22}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B%281%5Ctimes0%29%20%2B%20%282%5Ctimes3%29%2B%283%5Ctimes4%29%20%2B%284%5Ctimes16%29%20%2B%20%285%5Ctimes22%29%7D%7B0%2B3%2B4%2B16%2B22%7D)
![=\frac{0+6+12+64+110}{45}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B0%2B6%2B12%2B64%2B110%7D%7B45%7D)
![=\frac{192}{45}=4.267](https://tex.z-dn.net/?f=%3D%5Cfrac%7B192%7D%7B45%7D%3D4.267)
Therefore, the average score was 4.267
Hence the option D) 4.266
Answer:
c) 72
Step-by-step explanation:
multiply 18 by 4
Answer:
A: 6 triangles with height 10.4 inches each and base 12 inche
B: 62.4 square inches
C: 374.4 square inches
Step-by-step explanation:
Part A: You can form a triangle by connecting E to the top of the segment and connecting the top of the segment to D. Recreating this with each section will create 6 triangles with height 10.4 inches each and base 12 inches.
Part B: The area of a triangle is A = 1/2b*h. Substitute h = 10.4 and b = 12.
A = 1/2*10.4*12 = 62.4
Part C: There are 6 triangles each with area 62.4. So the area of the whole figure will be 6*62.4 = 374.4.
The correct answer is C.) (y|y > -4).
In order to find the range, we look for the possible numbers that y can be. In this case, you'll see the lowest the number goes is -4 and it continues up forever. Therefore, the answer is that y has to be greater than -4.