Use proportion or the Pythagorean theorem to find x

Evaluate the following expression 1/3^2

Bring the fraction a/a-4 to a denominator of 16-a^2

The seventh-grade students at charleston middle school are choosing one girl and one boy for student council. their choices for girls are michaela (m), candice (c), and raven (r), and for boys, neil (n), barney (b), and ted (t). the sample space for the combined selection is represented in the table. complete the table and the sentence beneath it.