There are approximately 1.6 kilometers in a mile. A car is traveling 65 miles per hour. What is the car's speed in kilometers pe
2 answers:
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Answer:
Step-by-step explanation:
The given function is
f(x) = 4x
As we know
f(x) = y, which implies x=
Therefore,
y = 4x
x =
as x=
So,
replacing y by x in the above expression
So our inverse function is
Answer:
Step-by-step explanation:
You can do this using the quadratic equation:
Let's first setup our expression:
4x² + 12x = 135
the quadratic formula is:
ax² + bx + c = 0
4x² + 12x - 135 = 0
Then:
a = 4
b = 12
c = -135
Now we plug in our coefficients and solve:
We solve for both to determine the positive one:
So if you are looking for a positive solution, just take the positive one as x.
