Answer:
The standard form of a quadratic equation is:
, 
Quadratic Formula Derivation:



Completing the Square:


Square Root property:



Answer:
63°
Step-by-step explanation:
Vertical angles are equal to each other.
For the first 5.0 seconds, the cruiser covers a distance of

At this point, the cruiser will have achieved a velocity of

The cruiser will take

to come to a stop as it decelerates. It will have covered a total distance of

First, identify the terms.
23
+6c
+8d
-7d
-6
Now combine like terms. Like terms are terms with the same variable (i.e. 1x and 3x)
23 and -6
6c
8d and -7d
Now combine!
23 - 6 = 17
6c = 6c
8d - 7d = 1d
So the answer is 17 + 6c + 1d