I hope this helps you
x^2+4x+3=2x+6
x^2+2x-3 =0
x +3
x -1
(x+3)(x-1)=0
x+3=0 x= -3
x-1=0 x=1
Answer:
don't know
Step-by-step explanation:
ok please mark mr brainlist
Given:
The power generated by an electrical circuit (in watts) as function of its current x (in amperes) is modeled by:

To find:
The current that will produce the maximum power.
Solution:
We have,

Here, leading coefficient is negative. So, it is a downward parabola.
Vertex of a downward parabola is the point of maxima.
If a parabola is
, then

In the given function, a=-12 and b=120. So,



Putting x=5 in the given function, we get




Therefore, 5 watt current will produce the maximum power of 300 amperes.
(8 p / h) * <u>"x"</u> h = p (in dollars).
_________________________________
in which: "h" = hours ;
"p" = pay (in units of dollars);
"x" = number of hours.
_________________________________
In the equation, on the left hand side, the unit symbol "h" would "cancel out" to "1" ;
and we would have:
_________________________________
8 p * x = _<u>[total "p"]</u>__