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nirvana33 [79]
2 years ago
10

A race car is driven by a professional driver at 99 . What is this speed in and ? 1 mile = 1.61 kilometers 1 hour = 60 minutes E

xpress the answers to the correct number of significant figures. The speed is equivalent to_____ kilometers /hour , or________ kilometers /minutes .
Mathematics
2 answers:
Y_Kistochka [10]2 years ago
8 0

Answer:

<u><em>Speed of the car is equivalent to 159.39 KM/hour or 2.6565 Km/min.</em></u>

Step-by-step explanation:

The speed of the car is <u>given as</u>  99 mi/hour.

Now, WE know that 1 Mile = 1.61 KM

Hence, in order to calculate the speed of the car in KM/hour we will multiply the speed of the car in miles with 1.61.

⇒The speed of the car in<em><u> KM/hour</u></em> = 99 × 1.61 KM = <u><em>159.39 KM/hour</em></u>

Also, 1 hour = 60 minutes

⇒ Speed of the car in<u><em> KM/min</em></u> = (159.39) ÷ 60 = <u><em>2.6565 K/min</em></u>

Lena [83]2 years ago
7 0

Let us assume that the given speed is in miles per hour.

A race car is driven by a professional driver at 99 mph.

We have to find the speed in kilometer per hour and kilometer per minutes

As 1 mile = 1.61 km

So, 99 miles = 99\times1.61=159.39 kmph

1 km per hour = 0.0166 km per minute

So, 159.39 kmph = 159.39\times0.0166=2.6458 km per minute

Hence, The speed is equivalent to 159.39 kilometers /hour, or 2.645 kilometers/minutes .


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