Zinc has a density of 0.258 lb/in³ (pounds per cubic inch).
darius is making a pyramid out of solid zinc. the pyramid has a square base 6 inches on each side, and a height of 2.5 inches.
how many pounds of zinc does he need?
do not round final !

For this case, we have that by definition:

ρ =

Where:

ro: Density

M: Mass

V: Volume

We find the volume of the pyramid:

Where:

: Represents the area of the base of the square pyramid

h: Represents the height

So:

We have to:

M = ρ* V

So, you need 7.74 pounds of zinc

7.74 pounds

its 8

step-by-step explanation:

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x