Is knowing the coordinates of the vertex of a parabola enough to determine the domain and range?

Mathematics

1 answer:

swat322 years ago

5 0

Answer:

Step-by-step explanation:

You need to know if it's open up or down

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Jake completed a marathon race in 3 hours and 12 minutes. What would be Jake's running time as a decimal?

VikaD [51]

$\text{Given that Jake completed a marathon race in 3 hours and 12 minutes.}\\
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\text{we need to find this time in decimals. so we will convert 12 minutes into hours}\\
\\
\text{We know that there are 60 minutes in 1 hour. }\\
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\text{so in 1 minute there will be}=\frac{1}{60 }\text{ hour}$

$\text{hence in 12 minutes we have}=\frac{1}{60}\times 12=\frac{1}{5}=0.2 \text{ hours}\\
\\
\text{hence the Jake's running time is}=3\text{hours + 12 minute}\\
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=3\text{ hours}+0.2 \text{ hours}\\
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=3.2 \text{ hours}$