Answer:
x = 9.6
Step-by-step explanation:
sin Q = 16/20 Q = 53.13° from the big triangle
16/20 = x/12
192 = 20x
x = 9.6
3(x+4) = 3(x) + 3(4) = 3x+12
3x+2x-4 = 5x-4
To solve for
, we are going to want to get it on one side of the equation by itself, or isolate it. To do this, we can divide both sides of our equation by π, as shown below:



We can see that r = C/pi.
Usually when a question is formatted this way without values for either variable, they want a literal equations olving for a varible, which is x in this case.
44x=l
Divide both sides by 44
x=l/44
Final answer: x=l/44