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1 answer:
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Answer:
The function is equal to
Step-by-step explanation:
we know that
The equation of a vertical parabola in vertex form is equal to
where
a is a coefficient
(h,k) is the vertex
In this problem we have
(h,k)=(8,-1)
substitute
<u><em>Find the value of a</em></u>
Remember that we have the y-intercept
The y-intercept is the point (0,-17)
substitute
x=0,y=-17
therefore
The function is equal to
see the attached figure to better understand the problem
Answer:
He will require 5400 seconds
Step-by-step explanation:
Given:
The total distance he has to cover = 48 miles
The speed he is moving = 32 mph
To find :
Time in seconds = ?
Solution:
As given in the question that he is moving with a constant speed of 32 mph and he has to cover a distance of 48 miles at this speed so we will be using distance formula for finding the time taken by him
Formula is
Distance = speed * time
here we have to find time so
Time =
Putting in the values we get
Time =
Dividing it gives us
Time = 1.5 hours
As we need the answer in seconds and we know that
one hour has = 3600 seconds
so
Time = 1.5 * 3600 seconds
Time = 5400 seconds