Answer:
The given expressions simplifies to tan (4x).
Step-by-step explanation:
Here, the given expression is : 
By TRIGONOMETRIC IDENTITY:

Putting this identity here, and taking A = 9 x, B = 5 x, we get

= tan(4x)
Hence, the given expressions simplifies to tan (4x).
First, make 6 1/3 a improper fraction:

. Now we have 19/3*7/3:

.
Answer:
x=-1 y=4 (-1,4)
Step-by-step explanation:
Sally has $40 hope it helps some
Answer:
0
Step-by-step explanation:
0 is the center of -4 and 4