Help please please please I begg

Step-by-step explanation:

The average of a set of numbers is the sum of the numbers divided by the total number of values in the set.

We can just add 5 ones because one half plus one half equals 1.

Then, we divide 5 by 6.

Then, we transfer it back to a fraction.

83 is a prime number, so this cannot be simplified.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

correct answer is c. just did it

step-by-step explanation: