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melisa1 [442]
3 years ago
8

H divide 4 = 9 I need help with this​

Mathematics
1 answer:
Makovka662 [10]3 years ago
6 0
Yo yo what’s your name on the phone back on your internet please send it
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A store sells 16 notebooks $7.04 at te same rate what is the cost of 4 notebooks​
wolverine [178]

4 x 7.04 ...................................

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2 years ago
If 5-y^2=x^2 then find d^2y/dx^2 at the point (2, 1) in simplest form. ​
ratelena [41]

Answer:

y"(2, 1) = -5

Step-by-step explanation:

Step 1: Define implicit differentiation

5 - y² = x²

Step 2: Find dy/dx

  1. Take implicit differentiation: -2yy' = 2x
  2. Isolate y': y' = 2x/-2y
  3. Isolate y': y' = -x/y

Step 3: Find d²y/dx²

  1. Quotient Rule: y'' = [y(-1) - y'(-x)] / y²
  2. Substitute y': y" = [-y - (-x/y)(-x)] / y²
  3. Simplify: y" = [-y - x²/y] / y²
  4. Multiply top/bottom by y: y" = (-y² - x²) / y³
  5. Factor negative: y" = -(y² + x²) / y³

Step 4: Substitute and Evaluate

y"(2, 1) = -(1² + 2²) / 1³

y"(2, 1) = -(1 + 4) / 1

y"(2, 1) = -5/1

y"(2, 1) = -5

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2 years ago
Total time it takes to clean: 2 1/2 hours time per session: 1/4 hour how many sessions will it take to completely clean the room
Tresset [83]
10 sessions (1/4 • 10 = 2 1/2)
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3 years ago
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