If x square plus 9 equal to 25,what is the positive value of x.​

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

Me d is also an option but i couldn't get it in the picture