Question 1:
We are going to add.
1/5 + 1/2
2/10 + 5/10
7/10
Note that we are going DOWN so the number will be negative.
Therefore, the answer is A.) -7/10
Question 2:
We are going to subtract.
4 1/2 - 1 2/3
9/2 - 5/3
27/6 - 10/6
17/6 or 2 5/6
Note that we are still BELOW sea level so the number will be negative.
Therefore, the answer is C.) -2 5/6
Question 3:
We are going to subtract.
2 2/3 - 1 1/5
8/3 - 6/5
40/15 - 18/15
22/15 or 1 7/15
Therefore, the answer is B.) 1 7/15
Best of Luck!
Answer:
V = 

Step-by-step explanation:
Volume of a cone is:

Substitute values given:


V = 
V = 

The second skater wont pass him, he is ahead and they are going the same speed
Answer:

Step-by-step explanation:
The difference of two squares identity is

When we let

and

, we get:

This will simplify to give us the required factors

Answer:
32.5
Step-by-step explanation:
% over 100 = is/ of
50% over 100 = x / 65
cross multiply
3250/ 100x = 32.5