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boyakko [2]
3 years ago
14

Quincy says that 3 is a good estimate for 3.4 X 0.09, is he correct? Why?

Mathematics
1 answer:
lord [1]3 years ago
4 0
<span>Quincy says that 3 is a good estimate for 3.4 X 0.09, is she correct? Why?
When we say estimates meaning it is not the exact answer but close to what is the exact.
Now, if Quincy estimated 3 as the product of 3.4 * .09, then let’s check if she has the correct estimates.
=> 3.4 estimates is 3
=> 0.09 estimates is 0.1
Now the answer is 0.3 and not 3.
Thus, Quincy’s estimate is wrong.</span>



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Step-by-step explanation:

Assuming that the cyclists stopped, and accelerated instantaneously at the same speed than before but in opposite direction , then

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since the cyclists and the train reaches the end of the tunnel at the same time and denoting L as the length of the tunnel :

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thus denoting v as the speed of the cyclists :

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