Answer: 17
Step-by-step explanation: ok so first to find the mean you add all the numbers then divide by how many numbers there is so basically 18 plus 15 plus 20 plus 15 then divide by 4 because there is 4 numbers and once you do that it is 17
Answer:
$16
Step-by-step explanation:
1/4x4=1
So 4x4 = 16
AB = -10
Im confused is this what you wanted?
Exterior angle = 360/n
= 360/13
= 27.7°
PHOTO IS BLACK . SO , I CAN'T ANSWER UR QUESTION