Helium atoms have 2 electrons both have a -1 charge. Every proton has a +1 charge. If the helium atom has no charge, how many protons must it have?

Which pair of angles are vertical angles? ∠1 and ∠4∠1 and ∠2∠2 and ∠4∠2 and ∠3more than one answer.

Aplot of land is shaped like a quadrilateral. fences are built on the diagonal to divide the area into 4 sections. what is vi to the nearest tenth? gv = 6.55fv = 5.84vh = 3.27vi = ?

What is the factor form of x^2-9x+14