Answer:
53&8
Step-by-step explanation:
38-23=15
23+15+15=53
23-15=8
Answer:101
Step-by-step explanation:
U just add all the numbers together
Answer: 3
90 pages in 30 minutes so divide 90 by 30 and 90 divided 30 = 3
Hope this helps!
Answer:

Step-by-step explanation:
Given : Vertices of Triangle
,
and 
To find : Centroid of a triangle
The centroid of a triangle is the point of intersection of the three medians of the triangle.
The formula to calculate the centroid of a triangle is:

Where,
are the coordinates of the centroid
Substituting the values in the formula gives us:



Therefore, 
About 224.7 I think. I hope this helps