A skateboarder is practicing in the city park. He is skating up and down the steepest straight-line ramp. If the highest point o
1 answer:
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Answer:
The parabola generated by the expression :
is the one that better represents a rain gauge above the ground.
Step-by-step explanation:
The function:
a)
Direction of parabola: branches pointing up
Location of vertex relative to x-axis: below
So, the parabola doesn't depict a rain gauge off the ground
b)
Direction of parabola: branches pointing down
Location of vertex relative to x-axis: above
So, the parabola doesn't depict a rain gauge off the ground
c)
Direction of parabola: branches pointing up
Location of vertex relative to x-axis: two units above
So, the parabola depicts a rain gauge off the ground
d)
Direction of parabola: branches pointing up
Location of vertex relative to x-axis: right on the x-axis
So, the parabola doesn't depict a rain gauge off the ground (this is sitting on the ground)
e)
Direction of parabola: branches pointing up
Location of vertex relative to x-axis: below
So, the parabola doesn't depict a rain gauge off the ground
Answer:
Part a: 4 minutes
Part b: lap
Part c: 84 minutes or 1 hr and 24 minutes
Step-by-step explanation:
<em><u>Part a:</u></em>
Ok so you got part a right, it's 4 minutes.
<em><u>Part b:</u></em>
you would do that will give you
.
So it's a quarter of a lap per minute.
<em><u>Part c:</u></em>
For this one we know that it takes her 4 minutes just to complete one lap, and if they're doing 21 laps that means we'll multiply 21 and 4. That gives us 84 minutes, or 1 hr and 24 min.