Okay so for this one, we have to isolate our X.Lets start by moving the negative 5 on the other side of the equal sign. Remember to not mix a number that is with an X with a normal number (in this case it would be the -3x and the -5). So in putting our -5 on the other sign it becomes positive. Here’s what we have: x^2-3x=5. x^2 is the same thing as 2x.So now you have to minus 3x off of your 2x. This gives us -1x, but can just be put as -x. So now we have -x=5. You’re answer could either be 5 or -5 if you decided to divide it by -1 seeing as your -x is technically -1.
First of all you times 2.16.... by 100 to get 21.61616.....
you then minus the original number to get 21.4.
You can then times that by 10 to why 214 and you can divide 214 by 99:
214/99 = 2.161616
Hope this helps! :)
Answer:
The answer is approximately 1.21.
Step-by-step explanation:
Using a calculator, enter in acos(6/17) or cos^-1(6/17)
