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# Mass of Solar System, Quadratic Formula and Complex Number

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What is the total mass in kilograms of our solar system? And what is the equation for the speed of light?

When solving a quadratic equation using the quadratic formula, is it possible for the b to the second power minus 4ac term inside the square root to be negative, thus forcing us to take the square root of a negative number?

In the real world, where might we use imaginary numbers?

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Mass of Solar System, Quadratic Formula and Real-Life Complex Number Applications are investigated.

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What is the total mass in kilograms of our solar system?

(see attached file for diagrams)

The pictures above show different views of the Sun. The first picture shows a solar flare erupting from the Suns surface, the second shows a total eclipse of the sun by the moon allowing the solar corona to be viewed, the third shows a picture obtained by the SOHO spacecraft it shows the solar corona and solar polar plumes, the fourth again shows a solar eclipse and the final picture show a sunspot found on the surface of the Sun.

The Sun is a G2 star, it is the largest body ...

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###### Education
• BSc , Wuhan Univ. China
• MA, Shandong Univ.
###### Recent Feedback
• "Your solution, looks excellent. I recognize things from previous chapters. I have seen the standard deviation formula you used to get 5.154. I do understand the Central Limit Theorem needs the sample size (n) to be greater than 30, we have 100. I do understand the sample mean(s) of the population will follow a normal distribution, and that CLT states the sample mean of population is the population (mean), we have 143.74. But when and WHY do we use the standard deviation formula where you got 5.154. WHEN & Why use standard deviation of the sample mean. I don't understand, why don't we simply use the "100" I understand that standard deviation is the square root of variance. I do understand that the variance is the square of the differences of each sample data value minus the mean. But somehow, why not use 100, why use standard deviation of sample mean? Please help explain."
• "excellent work"
• "Thank you so much for all of your help!!! I will be posting another assignment. Please let me know (once posted), if the credits I'm offering is enough or you ! Thanks again!"
• "Thank you"
• "Thank you very much for your valuable time and assistance!"

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