6 más 8 son 14 es muy fácil suerte
Common factor is an expression that is common. Her we can see 2x+5 is a factor for both of the terms so it is the common factor.
The answer is a. Tell me if im wrong
First find the volume of the pipe:
V = 3.14*length*(outsideradius^2 - innerradius^2)
= 3.14 * 10*(2.5^2 - 2^2)
= 70.65 cm^3
Now find the mass using the formula density = mass / volume:
Mass = volume * density
= 70.65 cm^3 * 0.92g/cm^3
= 65 grams
