So theres 4 hours and 60min equals 1 hour, so multiply 4 by 60 to get 240, so theres 240 minutes of time on the mp3. So 1/6 of that total time (240min) was on jazz, so what you do is divide 240 by 6 to get 40, so every 1/6 is 40min. So you could say he spend 40min listening to jazz, or you could say he spent 2/3 of an hour listening to jazz
Answer:
The simplified expression is:

Step-by-step explanation:
Given the expression

solving the expression

∵
∵ 
∵ 
Therefore, the simplified expression is:

Answer:(a+b)^4
Step-by-step explanation:
You first see what they both have in common. In this case it is the the 4 squared. You then take that out and you see what is left. The thing that is left is a+b.
So you put the a+b inside the parentheses and the 4 squared outside.
so your answer will be (a+b)^4.
Hope this helped.
We will see that the price of the bike helmet without the tax is $50
<h3>
How to find the original price?</h3>
Let's define P as the original price, this is the 100%.
We know that a tax rate of the 9% is equal to $4.50, then we can write two equations:
100% = P
9% = $4.50
We can take the quotient between these two equations and solve that for P, we will get:
(100%/9%)*$4.50 = P = $50
So the price of the helmet, without tax, is $50.
If you want to learn more about taxes, you can read:
brainly.com/question/14345924
20-16 get four then u woukd have to subtract it ant the answer is 4