What number should go into the blank so that the two expressions are equivalent to each other? (Use only the digits 0 - 9 to write the number.)
2(a + 8) = a + 21 + a-_

What is the quadric regression equation that fits these data

Identify the number as a rational or irrational.explain. 127

50 people men and women were asked if they watched at least one sport on tv. 20 of the people surveyed are women, but only 9 of them watch at least one sport on tv. 16 of the men watch at least one sport on tv. make a a two-way table and a relative frequency table to represent the data.