There are 3 rows of pictures on the wall because 2 times 3 is 6
Answer:
x=-3,x=9
Step-by-step explanation:
x^2-6x-20-7=0
x^2-6x-27=0
x^2-(9-3)x-27=0
x^2-9x+3x-27=0
x(x-9)+3(x-9)=0
(x+3)(x-9)=0
x=-3,x=9
Answer:
x = 9
m Angle B = 54
m Angle E = 54
Step-by-step explanation:
As m Angle B and m Angle E are congruent,
5x + 9 = 7x - 9
-2x = - 18
x = 9
m Angle B = 5x + 9 = 54
m Angle B = m Angle E
Therefore, m Angle E = 54
