I’m not sure but I think I know the answer the adult is $13.86 and the child is $16.50
First, some housekeeping:
cos = 12/13 is incomplete; "cos" must have an argument (input).
cos x = 12/13 is fine; here "cos" has the argument (input) x.
Given that cos x = 12/13, find sin x. To do this, we'll need to find the length of the opposite side, given that the hypo length is 13 and the adj. side length is 12.
12^2 + opp^2 = 13^2, or opp^2 = 169-144 = 25.
Then the opp side could be either 5 or -5. Let's assume that it's +5, and that angle x is in the first quadrant.
Then sin x = opp / hyp = 5/13 (answer)
cos 2 is an entirely different kind of problem. Here you are told what the argument (input) to the cosine function is (it is 2, which here means 2 radians).
Using a calculator: cos 2 = -0.416. Note that the angle 2 rad is in QII, which is why the "adjacent side" is negative and also why the cos of 2 is negative.
1). Add 27 to each side of the equation.
2). Add 72 to each side of the equation.
3). Divide each side of the equation by 12.
The value of 6X plus 2X over two when X equals three is 12
How can the equation be written?
The required equation based on the hints given is shown as below
(6X+2X)/2
when X=3
we need to substitute for the value of X in the above
((6*3)+(2*3))/2
The value of 6X plus 2X over two when X equals three is 2
In other words, the statement in the question is the same as 12
Find out more about the expression on:https://brainly.in/question/2389175
#SPJ1