In the triangle formed by the ladder, we have
where is the height of the top of the ladder. Then
Foil the right side. Multiply first, outer, inter, and the last terms. The right side is equal to x^2 + 11x + 18x. N is 11.
F(1) = (1)^2 + 1 = 2
g(4) = 3*4+1 = 13
2f(1) + 3g(4) = 2*2 + 3*13 = 43
Answer:
x = 16
Step-by-step explanation:
cos theta = adjacent side / hypotenuse
cos 60 = 8/x
Multiply by x on each side
x cos 60 =8/x*x
x cos 60 = 8
Divide by cos 60 on each side
x cos 60/cos 60 = 8 /cos 60
x =8 /cos 60
x = 16
You can spell Calculus right, that'd be a good start