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dem82 [27]
3 years ago
6

Find the derivative of f(x) = negative 9 divided by x at x = 6.

Mathematics
2 answers:
Anettt [7]3 years ago
5 0
First, find f(x+h) = (-9/(x+h)) ... just substitue (x+h) for every x.

Then plug in f(x+h) and f(x) in the difference quotient formula.

Lim/h->0\ [f(x+h) - f(x)]/h

Or, [(-9/ (x+h)) - -9/x] /h
Or, [(-9/ (x+h)) + 9/x]/h
Or, [(-9x + 9x + 9h)/ x(x+h)] / h
Or, [9h / (x^2 + hx)]/h .............................................. add like terms
Or, ( 9h / (x^2 + hx)) * h/1 .................divide by 7 is equivalent to multiply by 1/7
Or, 9/ (x^2 + hx) .................................cancle out the h
Or, 9/ x^2 ........................................... plug in 0 for h

Now, the function asks for x=6, so we plug in 6 for every x
so, the limit = 9/ 6^2 = 9/36 = 1/4.

o-na [289]3 years ago
4 0
F(x) = -9/x f(6) = -9/6 f(6) = -3/2 f(6) = -1.5 The function of f(x) = -9 / x at x = 6 is equal to -3 / 2 or -1.5. Hope that helps!
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Pls help me solve this volume problem
Ostrovityanka [42]

Answer:

220

Step-by-step explanation:

First, find the area of the bottom prism.

5x10x3 = 150.

Then find the area of the top prism.

The trapezoid's area is 7, multiply this by 10.

Add your quantities together.

You get 220.

8 0
2 years ago
I need help with this questions
SSSSS [86.1K]

Answer:

<u>Picture 1</u>

Your choice C is correct

  • (x - (-2))² + (y - 9)² = 5² ⇒
  • (x + 2)² + (y - 9)² = 25

<u>Picture 2</u>

  • (x + 5)² + (y - 6)² = 36
  • (x - (-5))² + (y - 6)² = 6²
  • r = 6, (h, k) = (-5, 6)

Correct choice is C

<u>Picture 3</u>

  • (x + 5)² + (y + 2)² = 81
  • (x - (-5))² + (y - (-2))² = 9²
  • r = 9, (h, k) = (-5, -2)

Correct choice is C

6 0
3 years ago
Find the value of each power 1. 3 to the power of negative 3 2. 4 to the power of 4
Nostrana [21]

Answer:

1. 1/3

2. 256

Step-by-step explanation:

3/3/3 is .133333 (3's are repeated)

4*4*4*4 is 256

5 0
3 years ago
Help me pls help me
coldgirl [10]
1st
0.3/100*15000
=45
2nd
40/200*100
=20
=
3 0
3 years ago
Read 2 more answers
What is the common ratio Between successive terms in the sequence? 1.5,1.2,0.96,0.768
lidiya [134]

Answer:

0.8

Step-by-step explanation:

0.768/0.96= 0.8

0.96/1.2 =0.8

4 0
3 years ago
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