Show your work please

The following pie chart shows the student grades breakdown for Math Fundamentals. There are 40 students in the class. Please answer the following questions.

How many total students have an A or B in the class?

How many total students have a D or F in the class?

What is the measure of the central angle that represents how many students have a C in the class?

any dumb answers will be reported.

1. 19 students

2. 13 students

3. 72°

Step-by-step explanation:

1. The diagram shows that mark A have 10% of students and mark B have 37.5% of students, so mark A or B have

of 40 students.

Find 47.5% of 40:

students

2.  The diagram shows that mark D have 17.5% of students and mark F have 15% of students, so mark D or F have

of 40 students.

Find 32.5% of 40:

students

3. Mark C have 20% of students. Since

then the central angle is of the full angle with the measure of 360°. Hence, the central angle has the measure of

what do u need to know

step-by-step explanation: