Answer:
Green = 6 sq yards Purple = 4 sq yards White = 9 sq
Step-by-step explanation: yessirkii
Answer:
19.4 ms
Step-by-step explanation:
The electric charge in a capacitor is given as;
Q= CV
Initial volts V = Q/C = 20µC/10µF = 2volts
final volts V = Q/C= 10µC/10µF = 1volts
Voltage on a capacitor undergoing discharge is given as;
v = v₀e^(–t/τ)
Where;
v₀ = initial voltage on the capacitor
v = voltage after time t
R = resistance in ohms,
C = capacitance in farads
t = time in seconds
RC = τ = time constant
Therefore;
τ = 10µF x 2.8kΩ = 28 ms
v = v₀e^(–t/τ)
1 = 2e^(–t/28ms)
e^(–t/28ms) = 0.5
–t/28ms = -0.693
t = (28ms)(0.693) = 19.4 ms
The correct answer is D. Because, by simplyfing all fractions your are left with you have the correct answer.
Answer:
x=6
Step-by-step explanation:
Mean is another word for average. It is found by adding up all of the values, and dividing that number by the amount of values you added together.
You have 5 values that get a mean or, average, of 7.4
1) We can write this as the following:
(11+12+5+3+x)/5=7.4
2) To solve, multiply both sides by 5:
11+12+5+3+x=37
3) Now combine all of the numbers on the left:
31+x=37
4) Now subtract 31 from both sides:
x=6
Answer:
x=2, y=-1, z=3
Step-by-step explanation:
The system shown in the attached picture can be solved using any method you wish
I think that the best way to go is by using the subtraction method,
First multiply the equation x+y+z=4 by 2, then sum it to the second equation.
This gives another equation: 4x+z=11.
If we subtract the first eq. with the third, we have another eq. -5x+z=-7.
Lest sum the 2 new founded equations, to obtain the following result: -9x=-18
thus, we obtain x=2
Next lets go backwards in the prior eq -5x+z=-7, with x=2, we obtain that z=3
Now in the first equation (x+y+z=4) we can substitute x=2, z=3 to obtain y value.