The trapezoid in the figure has equal nonparaellel sides. the upper base is 6 the lower base is 16 and the diagonal is 12. what is the altitude of the trapezoid

4.8

Explanation:

We have assume a  right triangle to be formed from the given description  so for the altitude we can use the Pythagoras theorem.

a²+b²=c²    (where a and b are the side lengths and c is the hypotenuse)

Putting the values that we have.

11²+b²=12²

simplify this,

121+b²=144

subtract 121 from both sides

b²=23

To solve for the missing side/altitude we just need to find the square root of 23

b=√23

It is approximately 4.8

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."