To get the mean, you add all of the numbers, and then divide the answer by the number of numbers.
15+(-6)= 9
9+12= 21
(21+x= q )⬅️ignore this for now, that's where the unknown number would have been
The mean = 5, and the number of numbers is 4, so basically, you find 5•4=20
So take the 21 from before, and if you add -1, you get 20!
So, x= ➖1⃣!!!!!!! (That's a -1)
Answer:
angle c: 28.5°
angle a: 123°
Step-by-step explanation:
Answer:
-8.635
Step-by-step explanation:
I used trigonometric identification
Answer:
Dont understan what you are asking
Step-by-step explanation:
