Since the diameter of the cylinder is 10, its radius is half that, or 5, thus
Answer:

Step-by-step explanation:

Add 18 to both sides:


Subtract 9h from both sides:


Multiply both sides by -1 and flip the symbol:


Divide both sides by 2:


The following polynomial is not written in standard form so it is false
150 minutes : 3 1/2 hours
3 1/2 hours = 3.5 hours = 3.5 * 60 = 210 minutes
150 minutes : 3 1/2 hours = <span>150 minutes : 210 minutes
</span>
= 150:210
= 15 : 21
= 5 : 7
It is about 3,000. There is no #4 on your picture, so I just answered number one because that is all I saw.