You didn't give the multiple choice so no one can help you do make sure to include that next time
a rectangle has two even size the other two even sides a square has four even sides and square is a rectangle but a rectangle isn't a square
I hope this helps you
-7.x^3=2.7.9
x^3=-18
x=i.(3square root of 18)
Y=3x-5
y-3x=-5
Times 2 from both side
y(2)-3x(2)=-5(2)
2y-6x=-10
Times negative from both side
(-)2y-6x(-)=(-)-10
-2y+6x=10
or
6x-2y=10
6x=2y+10
6x-2y=10
Furthermore, we see that both equation have the same 6x-2y=10 which means that both of them have infinity solutions, not a solution. Hope it help!
Answer:

Step-by-step explanation:
we know that
The density is equal to the mass divided by the volume
Let
x-----> the mass of marble
y----> the volume of marble
z----> the density of marble

in this problem we have


substitute and solve for x

