Answer:
The answer is b, which is 3+x+3
Answer:
(a) 4 seconds
Step-by-step explanation:
The given point (4, 0) on the parabola tells you the answer to the question: the coin was in the air 4 seconds before its height is 0. It is no longer in the air at that point.
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<em>Additional comment</em>
In order to match the rest of the problem statement, the first given x-intercept must be (-2, 0).
Answer:
8
miles or 25.133 miles
Step-by-step explanation:
your radius is 4 miles.
The area of a circle is A= 
Therefore, the area of this circle is
, or 16
Half of this area, because what you're looking for is a semi-circle, is:
8
(exact) or 25.133 (rounded) miles.
Answer:
5.3
Step-by-step explanation:
You use the Pythagoras theorem which is a^2+b^2=c^2.
Since you're solving for a side length that's not the hypotenuse you will manipulate the equation to c^2-a^2=b^2. From here you just plug in numbers.
8^2 - 6^2 = b^2
64 - 36 = b^2
b = sqrt(28)
b = 5.2915.... = 5.3