To get minimized number of x steel bars, we differentiate the equation and then equate to zero:
d/dx (C(x) = 0.02x² – 3.4x + 150)
C'(x) = 0.02(2)x – 3.4 = 0
Solving for x
0.04x – 3.4 = 0
x = 85 steel bars
For minimum cost,
C(x = 85) = 0.02(85)² – 3.4(85) + 150 = 5.5 dollars
Answer:
23x-4
Step-by-step explanation:
x+22x-4 ( If a <u>term</u> doesn't have a coefficient, it is considered that the coefficient is 1
1x+22x-4 Collect <u>like terms</u> by adding their coefficients (1+22)x-4
Then, add the numbers.
(1+22)x-4
23x-4
Answer:
here
A= 50
B = 62
Step-by-step explanation:
we know that
area of the regular Pentagon is 5/2*A*B
=5/2*50*62
=7750
