<span>This </span>number<span> is </span>also<span> known as the </span>opposite<span> (</span>number<span>), sign change, and negation. For a real </span>number<span>, it reverses its sign: the </span>opposite<span> to a positive </span>number<span> is negative, and the </span>opposite<span> to a negative </span>number<span> is positive. Zero is the </span>additive inverse<span> of itself.</span>
Answer: 120
Step-by-step explanation:
15x8=120
Since
![\Delta x=\dfrac{b-a}n](https://tex.z-dn.net/?f=%5CDelta%20x%3D%5Cdfrac%7Bb-a%7Dn)
, and you have a corresponding term in the given Riemann sum of
![\dfrac5n](https://tex.z-dn.net/?f=%5Cdfrac5n)
, you know the integral is being taken over an interval of length 5, so you can omit the second choice.
Next,
![f(a+i\Delta x)](https://tex.z-dn.net/?f=f%28a%2Bi%5CDelta%20x%29)
corresponds to
![a=3](https://tex.z-dn.net/?f=a%3D3)
with
![\Delta x=\dfrac5n](https://tex.z-dn.net/?f=%5CDelta%20x%3D%5Cdfrac5n)
. The fact that
![a=3](https://tex.z-dn.net/?f=a%3D3)
alone tells you that the interval of integration starts at 3, and since we know the interval has length 5, that leaves the first choice as the correct answer.
The speed of light is 300,000 kilometers per hour. hence option c is correct.
According to the statement
we have to explain that the by how much speed the light travels.
So, Firstly
Light is the natural agent that stimulates sight and makes things visible.
and speed of light means that the distance covered by the light with respect to time.
So, it means those distance which is covered by the light with respect to time is called the speed of light.
The speed of light is measures in km, meters and in other units also.
And we can calculate the speed of light per hour or per minute or in other time measurements.
So, The speed of light is 300,000 kilometers per hour. hence option c is correct.
Learn more about speed of light here brainly.com/question/104425
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Answer:
a
Step-by-step explanation: