Answer:
60 degrees
Step-by-step explanation:
The wheel is a circunference, so it has a total of 360 degrees. As we have 12 chairs evenly spaced, this 360 degrees will also be divided evenly, so the angle between each pair of chairs is equal to 360 / 12 = 30 degrees.
As we want the angle between chairs B and D, we have two spaces between chairs (the space between B and C and the space between C and D), so the angle is 2 * 30 = 60 degrees
The place where your "m" is already correct.
Additive inverse of -3(1/4) would be a number which when added to -3(1/4) would equal to 0. (zero)
This number is 3(1/4).
-3(1/4) + 3(1/4) = 0
If you were to count, it takes 8 little of those lines/stems thingy in order to reach the whole next number.
(1/4) of 8 is 2 so "m" would be at 2 little line/stems to the right of 3 which is where you already left it at.
Sum of all angles in a triangle must equal 180
so
180 - (30 + 50)
= 180 - 80
= 100
answer:
third angle = 100
