To find out the surface area of a triangular pyramid you have to do 14 x 24 then divide by 2 which gives you 168 then you'll do 8 times 6.9 then divide by 2 which will give you 27.6 which when you add 168+27.6, you'll get 195.
(f+g)(x) is basically equal to f(x)+g(x), so you're just adding the two functions together.
First we put the sentence into a function
9/10 * x + 6= 51Well then we solve<span>.</span><span>9/10* x= 51-6
9/10*x= 45
(<span>for</span> me is easier to make the fraction into a decimal...)
0.9*x= 45
x=45/0.9
x= 50
We check
9/10 * 50 + 6= 51
45+6=51
51=51
So the answer is x= 50</span>
3x-r=-3r+rx
3x=-3r+r+rx
3x=-2r+rx
3=rx-2r/x
there you go buddy...gitty up