Step-by-step explanation:
In order to figure out what is f(-2), we substitute all the "x" in the function with "-2" like this:
f(-2) = x² - 6x - 14 = (-2)² - 6(-2) -14
Now we can follow PEMDAS:
(-2)² - 6(-2) -14
= 4 + 12 - 14
= 2.
Hence, f(-2) = 2.
What are you trying to figure out in this?
Cents per mile?
Yes.
Your solution is <em>a</em> correct way to solve it. There is more than one correct way.
Answer: the sides are a = 7, b = 8, c = 10.
Explanation:
1) Use the law of sines:
sin(A) sin(B)
----------- = --------- =>
a b
2) Solve for B:
sin(B) = b * sin(A) / a = 8 * sin(44°) / 7 = 0.79389528
=> B = arcsin(0.79389528) = 52.55°
3) A + B + C = 180° => C = 180° - A - B = 180° - 44° - 52.55° = 83.45°
4) Use the law of sines again:
sin(A) sin(C)
------------- = -------------
a c
5) Solve for c:
c = sin(C) * a / sin(A) = sin(83.45°) * 7 / sin(44°) = 10.0
Answer: a = 7, b = 8, c = 10.