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borishaifa [10]
3 years ago
12

PLEAS HELP...FIRST CORRECT ANSWER WILL GET BRAINLIEST....PLEASE ANSWER NOW!!!!

Mathematics
1 answer:
dexar [7]3 years ago
7 0

*a clearer picture containing the graph is shown in the attachment

Answer:

20% of the class earned a D

Step-by-step Explanation:

Step 1: Determine the total number of students represented on the graph:

9 students => D

5 students => C

14 students => B

17 students => A

Total number of students = 45

Step 2: Express each category of students who scored a particular grade as a fraction and as percentage.

9 students => D => \frac{9}{45} = \frac{1}{5} => as percentage, we have \frac{1}{5} * 100 = 20 percent

5 students => C => \frac{5}{45} = \frac{1}{9} => as percentage, we have \frac{1}{9} * 100 = 11.1 percent

14 students => B => \frac{14}{45} => as percentage, we have \frac{14}{45} * 100 = 31.1 percent

17 students => A => \frac{17}{45} => as percentage, we have \frac{17}{45} * 100 = 37.8 percent

Step 3: Check each statement to see if they are true or not based on the calculations above.

Statement 1: "⅕ of the students earned a C."

This is NOT TRUE From our calculation, ⅑ of the students earned a C.

Statement 2: "3% more students earned an A than a B." This is also NOT TRUE.

37.8% earned A, while 31.1% earned a B. Thus, about 6.7% more students earned an A than a B.

Statement 3: "20% of the class earned a D".  This is TRUE.

Check calculation in step 2.

Statement 4: "¼ of the class earned a B". This is NOT TRUE.

¼ is 25% of the class. Those who earned a B account for 31.1% not 25% (¼ of the class).

The correct statement is: "20% of the class earned a D"

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