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jenyasd209 [6]
3 years ago
8

Which is the equation for a sphere with the center (8,-6,6) and radius 6?

Mathematics
1 answer:
zavuch27 [327]3 years ago
8 0

Answer:

(x - 8)² + (y+6)² + (z-6)²= 36

Step-by-step explanation:

To find the equation for a sphere with the center (8,-6,6) and radius 6, we will follow the steps below;

first write down the standard equation of a sphere:

(x - h)² + (y-k)² + (z-l)²= R²

where h, k and l are the center  and  R is the radius

From the question given, h = 8, k =-6  l=6  and R=6

we can now substitute the values into the formula

(x - h)² + (y-k)² + (z-l)²= R²

(x - 8)² + (y+6)² + (z-6)²= 6²

(x - 8)² + (y+6)² + (z-6)²= 36

Therefore, the equation for a sphere with the center (8,-6,6) and radius 6  is

(x - 8)² + (y+6)² + (z-6)²= 36

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(b) A department store has 7,000 charge accounts. The comptroller takes a random sample of 36 of
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a.0.8664

b. 0.23753

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Step-by-step explanation:

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b. greater than N180.00?

c. less than N168.00?

We solve the above question using z score formula

z = (x-μ)/σ/√n where

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μ is the population mean = N175

σ is the population standard deviation = N42

n is random number of sample = 36

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z = 164.50 - 175/42 /√36

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Probability value from Z-Table:

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For x = N185.50

z = 185.50 - 175/42 /√36

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Probability value from Z-Table:

P(x=185.50) = 0.93319

Hence:

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= 0.93319 - 0.066807

= 0.866383

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z = -7/42/6

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Probability value from Z-Table:

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3 years ago
in the adjoining figure P A and PB are tangents from P to a circle with Centre O if angle APB is equal to 40 degree then find an
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Step-by-step explanation:

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angle ACB = 360° - 220°

Therefore angle ACB = 140°

Hope it will help :)

5 0
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