Triangle Q T S is shown. Angle A T S is a right angle. An altitude is drawn from point T to point R on side Q S to form a right angle. The length of T S is 3 x, the length of Q R is 6, and the length of R S is 12.
What is the length of side TS?

2 StartRoot 6 EndRoot units
6 StartRoot 6 EndRoot units
24 units
8 units

Which is mostly likely why many scientists reject the cold fusion theory

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.