Ineed to learn how to solve 2v^2+8=50

In order to solve this, you would subtract 8 from both sides. 8 minus 8 cancels out and 50 minus 8 minus 42.

Now, the equation should read like 2v^2=42. You would then divide both sides by 2v^2. 2v^2 divided by itself by cancels out which would leave you with 42/2v^2.

19.9396816935

Step-by-step explanation:

You know that the height of the slide is 12, and the angle of depression is 53. Then, if you draw that out, you see that the cosine of those 53 degrees would be the 12 divided by the hypoteneuse, which in this case is the length of the slide. Thus you get the equation, cos(53)=12/x. Then you solve this algebraically and end up getting 12/cos(53), which is equivalent to 19.9396816935.