Answer:
6
Step-by-step explanation:
do you want an explanation?
btw, plz brainliest :)
Answer:
Step-by-step explanation
The first one is (3) ( Z, X Y , U )
The 2nd one is ( RS )
3rd on is ( 2 )
i am confident for my answer.
It went wrong in the 2nd step. It doesn't equal -3 it equals positive 3
It is given in the question that
A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by
![V = x^2h cm^3](https://tex.z-dn.net/?f=V%20%3D%20x%5E2h%20cm%5E3)
And the edge length of the base is 12 cm, the edge length of the base is decreasing at a rate of 2 cm/min, the height of the box is 6 cm, and the height is increasing at a rate of 1 cm/min.
Here we differentiate V with respect to t, and we use product rule, that is
![V = 2xh(dx/dt)+ x^2(dh/dt)](https://tex.z-dn.net/?f=V%20%3D%202xh%28dx%2Fdt%29%2B%20x%5E2%28dh%2Fdt%29)
Substituting the given values , we will get
[/tex]
![dV/dt = -288+144 = -144cm^3/min](https://tex.z-dn.net/?f=dV%2Fdt%20%3D%20-288%2B144%20%3D%20-144cm%5E3%2Fmin)
So at that moment, the volume is decreasing at the rate of
![144 cm^3/min](https://tex.z-dn.net/?f=144%20cm%5E3%2Fmin)
Answer:
-10
Step-by-step explanation:
-2³-2=-8-2=-10
2³= 8 = 2×2=4×2=8