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OpenStudy (anonymous):
the speed of a remote controlled car is 0.2 kilometers per minute. if there is no reason for the car to stop traveling, how many miles will it travel in 2 hours and 15 minutes?
12 years ago
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ganeshie8 (ganeshie8):
we use this formula :-
distance = speed x time
12 years ago
ganeshie8 (ganeshie8):
and convert time to same units (minutes would be good)
12 years ago
ganeshie8 (ganeshie8):
distance = speed x time
= \(\frac{0.2 km}{minute} \times \text{2 hours 15 minutes}\)
= \(\frac{0.2 km}{minute} \times \text{2 * 60 minutes + 15 minutes}\)
= \(\frac{0.2 km}{minute} \times \text{135 minutes}\)
12 years ago
ganeshie8 (ganeshie8):
multiply and simplify
12 years ago
OpenStudy (anonymous):
i dont get it @ganeshie8
i got 33.75
12 years ago
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ganeshie8 (ganeshie8):
how ?
12 years ago
ganeshie8 (ganeshie8):
looks wrong
12 years ago
ganeshie8 (ganeshie8):
0.2 x 135 = 27 km
12 years ago
OpenStudy (anonymous):
wait what am i supposed to do then?
12 years ago
ganeshie8 (ganeshie8):
convert it to miles, that gives :-
\(27 km \times \frac{1 mile}{1.609 km} \)
\(16.78 miles\)
12 years ago
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OpenStudy (anonymous):
thank you
12 years ago
ganeshie8 (ganeshie8):
yw :)
12 years ago
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