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Nadya [2.5K]
1 year ago
5

THE NUBER OF PEOPLE CONTACTED

Mathematics
1 answer:
Elis [28]1 year ago
4 0

Answer:

option c, x = 3

Step-by-step explanation:

Given:

  • f(x) = 27
  • f(x) = 3^{x}

Since both equal f(x) they must be equivalent as well,

3^{x} = 27\\

Apply exponent rule, 3 x 3 x 3 = 27

hence x = 3

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You measure 33 backpacks' weights, and find they have a mean weight of 36 ounces. Assume the population standard deviation is 12
saul85 [17]

Answer:

E=3.4363

Step-by-step explanation:

#Given a significance level of \alpha=1-CI=1-0.90=0.1 and

\bar x=36, \ \sigma=12.1 \ n=41, the critical value is,z_\alpha_/_2=z_\alpha_/_0_._0_5=1.645

#the margin of error can then be calculated as:

E=z_\alpha_/_2\times\frac{\sigma}{\sqrt n}=1.645\times \frac{12.1}{\sqrt 33}\\\approx 3.4363

Hence the margin of error is 3.4363

8 0
3 years ago
Write a quadratic function in vertex form whose graph has the vertex (−5, −1) and passes through the point (−2, 2)
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3 years ago
When seven times a number is deceased by 3, the result is 25. What is the number?
zepelin [54]

7n-3= 25

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n=4

6 0
3 years ago
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I need help with this question.
lbvjy [14]
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Given a cube with a volume of 18cm^3, what is the volume of a square pyramid that can fit perfectly inside the cube?
Galina-37 [17]
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