Answer:
1) 
2) 
3) 
4) 
5) 
Step-by-step explanation:
1) Convert mixed numbers to decimal numbers dividing the numerator by the denominator and adding the result to Whole number part:

The unit rate is:

2) Divide 2,857 points by 1,487 games:

3) Divide 255 strikeouts by 204 innings:

4) Divide 15 errors by 1,000,000 pieces:

5) Divide 5,979 points by 179 career playoff games:

Answer:
6
Step-by-step explanation:
2,400 divided by 400 = 6
The net diagram could be a cube because a cube has 6 identical sides.
Answer:
Ok, first in our series we can see two numbers in the Sigma, one bellow 0, and other above, 4.
This means that the value of k will go from 0 to 4, then all the numbers in the sum are:
(-1/2)^0 + (-1/2)^1 + (-1/2)^2 + (-1/2)^3 + (-1/2)^4
So we have 5 terms in our series.
b) to see the sign in each term, we must solve the powers, remember that:
(-1)^n is -1 if n is odd, and is equal to 1 if n is even, so we have:
(-1/2)^0 + (-1/2)^1 + (-1/2)^2 + (-1/2)^3 + (-1/2)^4
= 1 -1/2 + 1/4 - 1/8 + 1/16.
So the sign in each term of the series alternates.