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What is the answer to 5 6/8?

2) If a = 1/3 then a3 = ?

Two hundred tickets are being sold for a school draw. What is your chance of winning with one ticket? Express your answer as a percent.?

Combination and permutation?
I have two solutions for this problem. 1. (5C3)(4C3)(6!) = 28800 (solution from my old algebra textbook)2. 5*4*3*4*3*2*6! = 1036800 (my solution) What is your solution?What is the right solution? 
IS a 77 a good mark for grade 6?

If a car travels 100 kilometers in 2 hours find the average speed?

How much is 46 oz?

What was the cost of the watches a man bought?
Favorite answer: A man buys two watches at Rs.540.
He sells one watch at 10% profit and the other at 15% loss.
He didn't gain any profit or loss.
Let cost price of a watches be c and (540 − c)
Suppose the first watch is sold at 10% profit and the other at 15% loss.
Profit in selling the first watch = 10c/100
Loss in selling the second watch = 15(540 − c)/100
10c/100 = 15(540 − c)/100
10c = 15(540 − c)
10c =15 × 540 − 15c
25c = 15 × 540
5c = 3 × 540
c = 3 × 108 = 324
Cost prices of the watches are Rs.324 and (540  324) = Rs.216 
Is a 5 hours and 45 minute shift long?

Can you get an infinite amount of possibilities with a finite amount of things?
Favorite answer: Yes. Love is beyond math. 
Did I do this correctly 2/3 + 1/6 In the numerator In the denominator is 1/5  1/10 and we multiply all of that by 1/7?

Find two numbers a and b whose sum a+b is 4 and whose difference a−b is 6?

Help with this math question!?
Favorite answer: This tests if you understand that the intersection of the two graphs gives the solutions for both x and y. By sight that is x = 2, y = 3.
In case the graph does not guarantee enough acccuracy you can confirm that result by substitution.
When x = 2, f(x) = 3 and h(x) = 3, so the intersection was at (2, 3) 
What’s the value of x and y?
Favorite answer: You can work it out, step by step:
The triangle on the right is an equilateral triangle, so all angles are 60 degrees
The left hand triangle is an isosceles triangle. Its peak is 180  60 = 120 degrees (supplementary angle of 60 degrees)
The other two angles in the isosceles triangle will be equal and will total 180 120 = 60. Each one will be 60/2 = 30 degrees
Now you have two simple equations:
7y + 9 = 30
7y = 21
y = 3
4x  2 = 30
4x = 32
x = 8 
Round off 7523987 to one significant figure?

The formula for the volume of a cube with side length s is V=s^3. The formula for the surface area of a cube is A=6s^2.?
a) Find the formula for s=f(A) b) If V=g(s), find a formula for g(f(A)) help! Very confused, can someone give steps!! 
If a pump lift 2000 liters of water in 8 minutes, how many will it lift in 9 minutes?

Find the green shaded area?

Did I get the right answer to this math problem?
I chose none of the others 
10 divided by 2 + 2?