Answer:
Step-by-step explanation:
Since the question implies a constant rate, we can set up the following proportion:
Step-by-step explanation:
12x - 66 +15 = 3x +12
12x -3x = 66 -15+12
9x = 63
x = 63/9
x = 7
Answer:
c. 137°
Step-by-step explanation:
Answer:
C) 80 milliamperes
Step-by-step explanation:
The amount of current flowing through a circuit is directly proportional to the amount of voltage applied across the circuit. The relation between current(I) and voltage(V) can be expressed as:
Here, is the proportionality constant. It is given that, when voltage is 2 volts, 40 milliamperes( amperes) current flow through the circuit. Using these values we can find the value of proportionality constant. i.e.
Using this value, we can establish the relation between I and V as:
Now, we need to calculate value current (I) if voltage is equal to 4 volts. Substituting V = 4 in above equation, we get:
Thus, the value of current will be 80 milliamperes