20? I’m not for sure maybe look in the book? That’s the answer I got and it was right
Step-by-step explanation:
2(2x + 1) = 3(x - 4)
4x+2=3x-12
4x-3x=--12-2
x=14
Answer: 
Step-by-step explanation:
x^2+y^2=r^2 --> subtract x^2 to other side
y^2=r^2-x^2 --> square root both sides
y=sqrt(r^2-x^2)
It depends if you mean like a prism with say 15w 10l and 9h in a horizontal and a prism with a same volume but in a different position. and have a nice day