False, 4-2(3+7) = -16 and 4-2•3+2•7= 12
14^2+48^2=x^2
196+2304=x^2
2500=x^2
x=50
hypotenuse equals 50
- - 9+7=16
And you can do:
10+6=16 aswell. <span />
To determine the maxima and minima of the polynomial, differentiate the given based on x and equate to 0.
C(x) = 400x - 0.2x²
dC(x) / dt = 400 - 0.4 x = 0
The value of x is 1000. This is the value of the maxima. As the value of C(x) continously becomes lesser as the value of x is set higher, the minima is not identified. Substitute x to the original equation,
C(x) = (400)(1000) - 0.2(1000²) = $ 200,000
Thus, the answer is letter B.
