Multiply the binomials
(a + 7) x (a - 4)

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.