Answer:
y = 
Step-by-step explanation:
Given
ya + yv = t ← factor out y from each term on the left side
y(a + v) = t ( divide both sides by a + v )
y = 
For this case we have that by definition the mass is given by:

Where,
- <em>D: density
</em>
- <em>V: Volume
</em>
The volume of a pyramid is given by:

Where,
- <em>A: area of the base
</em>
- <em>h: height
</em>
Substituting values we have:

We now calculate the mass:

Answer:
he needs 7.74 pounds of zinc
Answer:
Step-by-step explanation:
50 of 100
= 50%
120 of 1
= 1.2%
Why would you ask that question if you already know the answer?