It’s A! hope this helps you out!
Divide both sides by
- note that this means we can't have
:


Then the left side reduces to the derivative of a product,
![\dfrac{\mathrm d}{\mathrm dx}\left[\dfrac1xy\right]=\sin x](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Cmathrm%20d%7D%7B%5Cmathrm%20dx%7D%5Cleft%5B%5Cdfrac1xy%5Cright%5D%3D%5Csin%20x)


This solution is continuous everywhere, but accounting for the singular point
, the largest interval over which it is defined would be
or
.
"x" represents an unknown number, we know that 70% of x equals 63.
To calculate the percentage of a number you have to multiply the said number by the percentage, in this case, 70%, and divide the result by 100:
So the 70% of x can be calculated as:

You can simplify this expression by solving the division

Then the expression that shows you the relationship is

Using this expression you can determine the value of x, to do so you have to divide both sides of the equal sign by 0.7

The value of x is 90
To find volume of a cylinder, your equation would be V=pie•radius squared•height. not sure if this helps
Multiply 7 and 5= $35
are you sure this is college mathematics?