Step-by-step explanation:
collect the like terms 12x+4=9x+8
12x-9x=8-4
3x=4
X=1.333
20.9 ft
This is a right triangle trigonometry question because N is 90 degrees. MN is adjacent to M and LM is the hypotenuse. Adjacent any hypotenuse use the cosine function.

plug in known values

switch cos(20) and x using the products property

plug into calculator to get 20.9 ft

is asking for what number x will the function

will produce 81.
3x = 81
x = 27
Answer:
terminating: - 1 3/5
repeating: - 1 2/3
Step-by-step explanation: