ANSWER:
17
EXPLANATION:
1st: to find the mean you add all the numbers
2nd: divide by how many numbers there are
So basically 18+15+20+15 then divide by 4 because there are 4 numbers and once you do that it is 17
Hope this helps!!!
Answer:
150*
Step-by-step explanation:
Using the formula (n -2) x 180* we find that there is 4 sides (n) and in put it and simplify to make (2)x180*. From there we calculate there is 360* in this polygon, and subtract the degrees already provided. 360-210=150
$221 you started with 260 right and you subtract 15% in your calculator you end up with 221.
Plug in 4 for X and you get 44
Answer:
C=120 when it is a supplementary angle/linear pair (180)
C=30 when it is complementary /right angle(90)
