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Blababa [14]
3 years ago
10

Two trains 150 miles apart are traveling toward each other along the same track. The first train goes 60 miles per hour; the sec

ond train rushes along at 90 miles per hour. A fly is hovering just above the nose of the first train. It buzzes from the first train to the second train, turns around immediately, flies back to the first train, and turns around again. It goes on flying back and forth between the two trains until they collide. If the fly's speed is 120 miles per hour, how far will it travel?
Mathematics
1 answer:
Nataly_w [17]3 years ago
3 0

Answer:

120 miles

Step-by-step explanation:

Distance = 150 miles

train 1 = 60 mph

train 2 = 90 mph

directions of trains = towards each other

Time to meet = 150/(60+90) = 150 miles / 150 mph = 1 hour

Speed of fly = 120 mph

Since fly has been flying for one hour, it travelled 120 miles.

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<h3>What is exponential decay?</h3>

During exponential decay, a quantity falls slowly at first before rapidly decreasing. The exponential decay formula is used to calculate population decline and can also be used to calculate half-life.

We have an equation for radioactive decay:

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a) Plug t = 0

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b) plug t = 20 years

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After solving:

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x = 19.80 years ≈ 20 years

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Learn more about the exponential decay here:

brainly.com/question/14355665

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