For once, I was able to solve a problem. For this particular one, you have to use a combination of algebra and geometry, but this problem is absurdly easy compared to the usual slate of challenges I've tried to solve from this guy's channel.
Thursday, February 02, 2023
1 comment:
READ THIS BEFORE COMMENTING!
All comments are subject to approval before they are published, so they will not appear immediately. Comments should be civil, relevant, and substantive. Anonymous comments are not allowed and will be unceremoniously deleted. For more on my comments policy, please see this entry on my other blog.
AND A NEW RULE (per this post): comments critical of Trump's lying must include criticism of Biden's or Kamala's or some prominent leftie's lying on a one-for-one basis! Failure to be balanced means your comment will not be published.
Subscribe to:
Post Comments (Atom)
Solution: start with the triangle at the top. As you see, all sides are congruent, so that makes it an equilateral. The interior angles of an equilateral are all 60 degrees. The top vertex of the larger triangle, being a vertical angle with the equilateral's, must therefore also be 60 degrees. The [9x-2] and [7x-6] angles have vertical angles inside the larger triangle as well. The sum of any triangle's interior angles will always be 180 degrees, so we now know the initial equation:
ReplyDelete[7x-6] + [9x-2] + 60 = 180
Just solve from there, and you get
x = 8.