On a statistics exam, 8 students received an A, 4 students received a B, and 6 students received a C. If a single student is picked at random, what is the probability that they received an A or C?

Provide the final answer as a fraction.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

If a single student is picked at random, what is the probability that they received an A or C?

Desired outcomes

Student got an A or C

8 students received an A

6 students received a C

14 total outcomes

Total outcomes

8 students received an A

4 students received a B

6 students received a C

18 total outcomes.

The probability is 14/18 = 7/9.

x = central angle apc = measure of minor arc ac

the two angles x and 30 add to 180, so x+30 = 180 and x = 180-30 = 150. the measure of minor arc ac is 150 degrees.

what we need to do from here is find the circumference and then multiply it by x/360 since there are 360 degrees in a circle. in this case, x = 150, so x/360 = 150/360 = 15/36 = 5/12. the shortest distance along the curve from a to c is 5/12 of the distance around the entire circle (aka circumference)

c = circumference

c = pi*d

c = pi*24

c = 24pi

now multiply this by 5/12 to get

distance along minor arc ac = (5/12)*(circumference)

distance along minor arc ac = (5/12)*(24pi)

distance along minor arc ac = 10pi

the formula you can use is

l = (x/360)*pi*d

with

l = length of minor arc

x = central angle

d = diameter

which essentially is the steps we took though a bit differently.

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844