We first need to write the function in standard form.
y = -x^2 - 7x + 18
To find the axis of symmetry, we do -b/2a
The a and b are the coefficients of the x values.
So a would be -1 since -x is same as -1x
Follow that, b would be -7.
Then just plug the values in. - (-7)/2(-1) = -7/2
The axis of symmetry is -7/2
We are tasked to solve for the current in the given circuit diagram and in order for us to solve this problem, we need to apply and use Ohm's Law theorem which is also given in the problem I = V/R where "I" represents the current, the "V" represents the voltage and "R" represents the resistance of the circuit. The solution is shown below:
V = 5 volts
R = 20 ohms
Since we are given with voltage and resistance value, we can now proceed in solving for the current value:
I = V/R, substitute values
I = 5/20, perform division
I = 0.25 amperes
The answer is 0.25 amperes or 250 milliamperes.
Answer:
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Explanation:
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