Answer:
100
Step-by-step explanation:
if pattern 1 has 1 shade, pattern 2 has 2 shades, pattern 3 has 3 shades, and so on... therefore, pattern 100 has 100 shades of grey.
9b^3 -11 -10b^3
combine like terms
9b^3 -10b^3 -11
-b^3 -11
B. x = 5 and y = -13
Equating real parts, we have ...
... x + 4 = 9
... x = 9 - 4 . . . . subtract 4
... x = 5
___
Equating imaginary parts, we have ...
... yi +9i = -4i
... yi = -4i -9i = -13i . . . . subtract 9i
... y = -13 . . . . . . . . . . . divide by i
= y > -272
