Answer:
mean = sum of the terms/total no. of terms
mean = (16+12+13+22)/4
mean = 63/4 or 15.75
Answer:
Hey there!
2/3 of 90 cm would be 60 cm.
Hope this helps :)
90°
all angles of a triangle add up to 180°, so 45+45=90°, 180-90=90°, 90+90=180°
23. because there is a 90 degree angle and then the 67 degree angle, and triangle law says that all angles add up to 180.
