Find the diameter of the circle with a circumference of 27 centimeters. Use 3.14 for π. Round to the nearest tenth.
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Answer:
The solution of the equation is .
Step-by-step explanation:
The previous equations is for the Ohm's Law, which states that current (), measured in amperes, is directly proportional to the voltage (
), measured in volts:
The complete formula is:
(1)
Where is the electric resistance, measured in ohms.
Solving for means that we need to clear
within the formula, a process that will be presented step-by-step:
1) Given
2) Compatibility with multiplication.
3) Commutative and associative properties.
4) Existence of multiplicative inverse.
5) Modulative property.
6) Definition of division/Symmetric property/Result
The solution of the equation is .
y=-2x^2-8x-4
-2x^2-8x=4
divide by negative 2
x^2+4x=-2
complete the square
(x+2)^2=-2+4
(x+2)^2=2
x+2=±
x=-2±
nearest hundreths,
x=-0.59
x=-3.41