If the slope of a line is -1/4,find x when (x,2) and (1/2,6)
1 answer:
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Answer:
The resistance is decreasing at a rate of 0.36 ohms/minute.
Step-by-step explanation:
The mathematical form of the Ohm's law is given by :
V = IR ...(1)
Where V is voltage, I is current and R is resistance
Given,
I = 5 A
R = 6 ohms
dI/dt = 0.3 A/min
Differentiate equation (1) wrt t:
When V is constant, dV/dt = 0
So, the resistance is decreasing at a rate of 0.36 ohms/minute.
Option D:
160 plastic cubes can fit into the box.
Solution:
Convert mixed fraction into improper fraction.
Length of the box = 4 ft
Width of the box = ft
Height of the box = 2 ft
Volume of the box = length × width × height
= 20 ft³
Volume of the box = 20 ft³
Length of the plastic cube = ft
Volume of the cube = length × length × length
Volume of the cube = 0.125 ft³
= 160
Number of plastic cubes = 160
Hence 160 plastic cubes can fit into the box.
Option D is the correct answer.