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Anna71 [15]
3 years ago
15

If light travels about 3 x 10^5 kilometers per second, about how many kilometers does it travel in one day? Write the answer in

scientific notation.
Mathematics
1 answer:
Dovator [93]3 years ago
6 0
<h2>Answer:   2.59 × 10¹⁰ kilometers/day</h2>

<h3>Step-by-step explanation:</h3>

Since there are 86400 seconds / day

& light travels at 3 x 10⁵ kilometers / second

Then kilometers the light travels in a day

  = (86400 seconds / day) × (light travels at 3 x 10⁵ kilometers / second)

  = 2.59 × 10¹⁰ kilometers/day

<u></u>

<u></u>

<u>Note:</u>

<em>We know that we have to multiply because the unit 'seconds per day' has the seconds in the numerator, while the unit 'kilometer per second' has the seconds in the denominator, so to cancel we would have to multiply. This gives us the unit we are looking for 'kilometeres per day'.</em>

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5 0
1 year ago
If you know any answers to the above questions please tell me what answer you got and explain how you got it in detail please. E
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Remember, to solve this, you multiply the bigger numbers and add the exponents. if the exponents are negative they go on the bottom and are switched to a positive, you are trying to make the problem positive.
number 15 is A because you multiply 2 and 4 to get 8 and you add the exponents together if they are positive and are not a fraction
number 16 is D because you multiply all the bigger numbers together to get 48, then you add all the b's together to get four and all the a's to get 8
number 17 is D because you do the same by multiplying 5 and 3 to get 15, then adding the exponents to get 3 x's and 6 y's
number 18 is D because you multiply 5 and 2 and add the exponents to get 3 x's and 5 y's because the x without a number is a one so you make that one count and add 2 and one together to get 3
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