What is the solution to the following system?

The correct answer is option 3. (20, 4, 5)

Step-by-step explanation:

To solve this problem we use the substitution method.

(i)

(ii)

(iii)  

We start by clearing x in (iii) and clearing y in (ii).

(iii)

(ii)

Now we substitute (iii) in (ii)

(iv)

Now we substitute (iii) and (iv) into (i) and clear z.

(v)

If (v)

We substitute (v) in (iii) and then substitute (v) in (iv)

The correct answer is option 3.

the answer is 62.8 cubic units

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.