2x squared + -28 is the answer.
If $1 is 75 yen and there is $25, multiply 25*75 to get the total amount of yen. 25*75 = 1875 yen was what he had to pay
Answer:
- To simplify an equation we look for like variables, ie: 2x + 4x = 6x
- Now for your equarion:
4/5x -1/2 +8/5x = 12/5x -1/2
Rate positively and give brainlist
Option 4 is correct i.e. <span>The volume of the box is increasing at a rate of 192 cm^3/min.
</span>Given : Volume of the rectangular box = x²h
where x is edge and h is height.
The edge and the height are varying with time, therefore, we write,x = x(t)
h = h(t)
dh/dt = -3 and we shall calculate when x = 4, dx/dt = 2 and when h=15
V = x²h dV/dt = (2x × dx/dt × h) + (x² × dh/dt) dV/dt = 2×4×2×15 + (4)^2 ×(-3) dV/dt = 240 - 48
dV/dt = 192
Because dV/dt is positive, hence the volume is increasing