-- The average of 6 numbers is 7.
So those 6 numbers must add up to 42.
-- If one more number results in an average of zero,
the new number must be -42 .
Then all 7 numbers add up to zero.
Answer: D
Step-by-step explanation:
The pythagorean theorem shows that 
.
This shows that the two shaded squares are equal, so D is incorrect.
A plastic skeleton is
Answer: B. a physical model.
The world has lots of different kinds of models. A mathematical model might be a ball travels according to the equation 
. This isn't that. A computer model would be a program that somehow simulates a skeleton in the computer, this isn't that either. Our skeleton is an actual physical model just like a model airplane.
Answer:
the answer would be.......
Step-by-step explanation:
a straight line is the shorest distance because a triangle only has straight lines
