HappyBeatrice1401
20.08.2019 •
Mathematics
If s is between r and t, rt=24, rs=x^2+8, and st= 3x+6
how to find the value of x and if s is the midpoint or not ( show how you got the answer)
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Ответ:
The total (RT) is 24. So you need to find the segments that make up RT. (RS & ST) Set up your equation by plugging in what you know. We know RS is x²+8. We also know that ST is 3x+6. And that RT is 24. So, RS + ST = RT. x²+8 (RS) + 3x+6 (ST) = 24 (RT). Then just combine like terms, and solve for x. Then plug x back into each equation (such as RS & ST) to figure out what they equal.
Ответ:
Ответ:
A. 0.21
Step-by-step explanation:
We have been given a triangle and we are asked to find the value of cos using law of cosines.
Law of cosines:
Upon substituting our given values in above formula we will get,
Upon rounding our answer to nearest hundredth we will get,
Therefore, the value of is 0.21 and option A is the correct choice.