When dealing with percentages you have to change the percent to a decimal and multiply then you get your answer.
Answer:
dV/dt = 13,5 [Km³/h]
Step-by-step explanation:
The volume f the cube is:
V = x³ where x is a side of the cube, then tacking derivatives with respect to time on both sides of the equation
dV/dt = 3*x² dx/dt
dx/dt = 2 km/h
at the time when the side x = 1,5 Km
dV/dt = 3* (1,5)²*2 [km³/h]
dV/dt = 13,5 [Km³/h]
Answer:
x = -31/6 or -5.16
Step-by-step explanation:
3(2x-3) + 49 -2 = 0
Distribute 3 through the parenthesis
3 (2x-3) + 49 - 2 = 0
6x - 9 + 42 - 2 = 0
Calculate the sum or difference
6x - 9 + 42 - 2 = 0
6x + 31 = 0
Move constant to the right side and change its sign
6x + 31 = 0
6x = -31
Divide both sides of the equation by 6
6x = -31
x = -31/6 or -5.16
