3 years ago

I need help please . . . . i even upped the points . . .

Mathematics

2 answers:

Darina [25.2K]3 years ago

8 0

The answer is b hope this helps

larisa86 [58]3 years ago

4 0

Answer:

Step-by-step explanation:

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Step-by-step explanation:

Given

height of two Poles are 60 and 80 ft

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$\frac{\mathrm{d} L}{\mathrm{d} x}=\frac{2x}{2\sqrt{80^2+x^2}}-\frac{2\left ( 100-x\right )}{\sqrt{60^2+\left ( 100-2x\right )^2}}$

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