It’s 75 have a nice day :))))
none of those are right it is 4 because there is no x behind the 4.
That's pretty hard to show through a site like this. I recommend going to this site to learn how to construct: http://www.mathopenref.com/constorthocenter.html
Answer: 30
Step-by-step explanation:
40 + 8x = 280
-40 -40
8x = 240
___ ____
8 8
X = 30