Assuming that the telephone's number pad has the numbers 0<span>,1,2,3,4,5,6,7,8,9 the product will be </span><span>0</span>
The correct answer is exactly one triangle
4x-10+x-10=90
5x-20=90
5x=110
x=22
So plug in 22 for x
22-10 =12
So measurement of ZA is 12
x^2 + 4x + 3
-----------------------
x^2 + 9x + 18
(x + 3) (x + 1)
= -----------------------
(x + 3) (x +6)
(x + 1)
= -------------
(x +6)