Answer:
Step-by-step explanation:
They let you see how one fraction compares to another for one. Say you had 2/5 and 3/7 it may be tricky to tell which is bigger, but having the tiles will let you see that 3/7 is slightly bigger. And there are many many more complicated examples. So if you know which is bigger you will know subtracting the smaller one will keep it positive, while if you subtract the larger from the smaller one it will be negative.
Also, you can then find equivalent tiles. In the example I gave you would be able to see 2/5 = 14/35 and 3/7 = 15/35. Which are like fractions you can subtract simply.
Answer:

Step-by-step explanation:
Question:
To evaluate
to the base 5
Solution:
We will apply log properties to evaluate.
We will use the following property of logarithms
If 
Then, 
Let 
So, we have

We can write 

∴ 
Thus, we have

Answer:
2 minutes
Step-by-step explanation:
You can make an equation to model the question.
y=60 initial starting value,
y=(750-720)x, plug in 60 for y,
60=30x, x = 2 minutes
Answer:
Number 2 is A and number 3 Is A.
Step-by-step explanation:
divide
Construction IV is the most logical answer hope this helps :)