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makvit [3.9K]
3 years ago
7

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:

B

Step-by-step explanation:

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Given: x+2y=-6. Solve for y. y=x-6/2
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Find all values of c in the open interval (a, b) such that f'(c)=(f(b)-f(a))/(b-a)
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<h3>Answer:   c = 7/4</h3>

================================================

Work Shown:

Compute the function value at the endpoints

f(x) = \sqrt{4-x}\\\\f(-5) = \sqrt{4-(-5)} = 3\\\\f(4) = \sqrt{4-4} = 0\\\\

With a = -5 and b = 4, we have

f'(c) = \frac{f(b)-f(a)}{b-a}\\\\f'(c) = \frac{f(4)-f(-5)}{4-(-5)}\\\\f'(c) = \frac{0-3}{9}\\\\f'(c) = -\frac{1}{3}\\\\

So,

f(x) = \sqrt{4-x}\\\\f'(x) = -\frac{1}{2\sqrt{4-x}}\\\\f'(c) = -\frac{1}{3}\\\\-\frac{1}{2\sqrt{4-c}} = -\frac{1}{3}\\\\

Use algebra to solve for c

-\frac{1}{2\sqrt{4-c}} = -\frac{1}{3}\\\\\frac{1}{2\sqrt{4-c}} = \frac{1}{3}\\\\3 = 2\sqrt{4-c}\\\\2\sqrt{4-c} = 3\\\\\sqrt{4-c} = \frac{3}{2}\\\\4-c = \frac{9}{4}\\\\c = 4-\frac{9}{4}\\\\c = \frac{16-9}{4}\\\\c = \frac{7}{4}\\\\

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3 years ago
Which of the following shows 2x3y-3x2+7yx-12y written in standard form
AysviL [449]
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is in standard form
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3 years ago
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