I assume O is where the three medians meet.
because triangle ABC is equilateral, the median is also the angle bisector and the altitude.
BO is 2/3 of BE, BE=CF=AD=20, so BO=40/3
Answer:
None of the above
Step-by-step explanation:
20 x 4 = 80
20 + 20 +20 =20 = 80
2 3/4 - 1 = 1 3/4 or 1.75
Answer:
the z-score is within 3
Step-by-step explanation:
first you got to take the standard deviation and add it to the mean since 375 is greater than 250. so the equastion would be
250+50=300+50=350+50=40
so the z-score for the value of 375 is within 3