Looking at number 4, you first have to look at the information that you have:
On tuesday he practiced for 1 5/6 hrs
Monday he practiced for 7/10 hrs
He is supposed to practice for 1 1/4 hr.
You could write questions like:
How much more did Marco practice on Tuesday than he is supposed to practice?
This works because it does indeed involve subtraction, you would be subtracting the amount that he should have practiced from the amount of time that he did practice.
If I didn't answer the question, please message me and I will clarify!
1. I would first write it out as fraction
2/1 divided by 2/5
2. When dividing fractions you need to find the reciprocal (opposite of or switched) of the fraction then multiply the two fractions together
2/1 divided by 5/2 <------- that's the reciprocal of 2/5
3. Now multiply
2 5 10
- x - = - = 5
4. 5 is your answer! :)
1 2 2
What do you mean ?? Text it to me so I can see it
Step-by-step explanation:
Given: X is midpoint of UV and Y is midpoint of VW.
(By mid-point theorem)

Answer:
-5
Step-by-step explanation:
From your knowledge of multiplication tables, you know that ...
-35 = -(7×5) = 7×(-5)
Then comparing to the given equation, you realize ...
t = -5
_____
Or, you can recognize 7 as the coefficient of t and divide both sides of the equation by that:
-35/7 = (7t)/7
-5 = t