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velikii [3]
3 years ago
11

Rob is travelling at a constant speed in a car. He travels 105km in 1 hour and 30 minutes. The speed limit is 80km/h. Is Rob tra

velling within the speed limit? Show how you decide.​
Mathematics
1 answer:
abruzzese [7]3 years ago
8 0

Answer:

Yes.

Step-by-step explanation:

Let's first convert his speed to km/h.

\frac{105km}{1.5h}  = 70\frac{km}{h} > 80\frac{km}{h}. Therefore, Rob is traveling within the speed limit.

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allsm [11]

<u><em>The axis of symmetry is x = 5.</em></u>

In first place, every quadratic function can be expressed as follows:

f(x) = a*x² + b*x + c

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The graph of a quadratic function is a parabola. Every parabola is a symmetric curve with respect to a horizontal line called the axis of symmetry. That is, the axis of symmetry is an imaginary line that passes through the middle of the parabola and divides it into two halves that are mirror images of each other.

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