Answer:
B) 6(x+2y) + 4 = 6x + 12 y + 4
To add or subtract with powers, both the variables and the exponents of the variables must be the same. You perform the required operations on the coefficients, leaving the variable and exponent as they are.
About $0.48
you can make an equation
12/5.79 = 1/x
Answer:

Step-by-step explanation:
tanx=
sin60°/cos60°=
= 
Answer:
You posted too much stuff. sorry. I can't do it.
Step-by-step explanation: