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vitfil [10]
3 years ago
14

80% of 65 please help

Mathematics
2 answers:
Sonbull [250]3 years ago
5 0
The answer is 52.

65 x 0.8 = 52.
Zigmanuir [339]3 years ago
3 0
(65 × 80) ÷ 100 (because percentage is always out of 100) = 52.

52 is 80% of 65. 
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malfutka [58]

Answer:

The magnitude is  \Delta f(0,8)  =  72

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Step-by-step explanation:

From the question we are told that

   The function is  f(x, y) =  9sin(xy) \ \ \

    The point considered is  (0,8 )

Generally the maximum rate of change of f at the given point and the direction is mathematically represented as

            \Delta f(x,y) =  [\frac{\delta  f(x,y)}{\delta x } i + \frac{\delta  f(x,y)}{\delta y } j  ]

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            \Delta f(x,y) = [9y cos (x,y) i +  9xcos (x,y) j]

At  (0,8 )

            \Delta  f (0,8) =  [9(8) cos(0* 8)i  + 9(8) sin(0* 8)j  ]

            \Delta  f (0,8) = 72 i

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3 years ago
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Step-by-step explanation:

Solving a quadratic equation:

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So

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The solutions are x = -4 and x = 4.

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3 years ago
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