Answer:
x=.6
Step-by-step explanation:
Combine like terms on the same side
.2x and .8x
1x+3.4=4
subtract 3.4 from both sides
1x=4-3.4
x=.6
7/9 is the answer I believe
Hello!
Usually systems of equations have one equation that will show the value of one variable in relation to their other, such as y=2x.
The other equation will usually show the two variables in relationship to another number, such as x+y=15.
To make a system of equations for this point, we need to show one variable’s value in relation to the other. We could put that x=2/3y.
Now we show x and y in relation to another number. We could put that x+y=-5.
Note that we could add y intercepts and extra coefficients to these equations, but for now I am keeping it simple.
Now we have a possible system of equations.
x=2/3y
x+y=-5
When solving for the values of x and y, you could substitute the first equation for x in the second equation to solve.
I hope this helps!
The Reactance of a Capacitor is t<u>he resistance it has when alternating current (A/C) with a specific frequency (f) passes through it. </u>This is measured in ohms (Ω) and its formula is:
(1)
Where:
is the Reactance in ohms (Ω)
is the frequency of the alternating current in Hertz ()
is the Capacitance of the Capacitor in Farad ()
In this case we have a 25 mF capacitor with an applied frequency of 400 Hz.
Note
Well, with the given data we have to solve (1):
Then:
XC=0.0159 Ω This is the Reactance of the Capacitor