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yawa3891 [41]
2 years ago
9

Hiii please help i’ll give brainliest if you give a correct answer tysm!

Mathematics
1 answer:
SVETLANKA909090 [29]2 years ago
8 0

Answer:20 people

Step-by-step explanation:

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12,309

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Molly's favorite store is running a great deal. All products are marked down 20% from their original
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  • D. 0.8p(1p-0.2p)

Step-by-step explanation:

<u>If p is the original price, the markdown price is:</u>

  • p - 20% =
  • p - p(20/100) =
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<u>Now, another 20% off:</u>

  • 0.8p - 20% =
  • 0.8p - 0.8p(20/100) =
  • 0.8(p - 0.2p) =
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<u>Answer choices:</u>

  • A. 0.2(1p-0.2p)
  • B. 0.6p
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  • D. 0.8p(1p-0.2p)

Correct one is D

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2 years ago
Internet company Gurgle is carrying out testing on the efficiency of its search engine. A sample of 31 searches have been carrie
Mrac [35]

Answer:

d. Approximate the standard normal distribution with the Student's t distribution

(0.2199 ; 0.2327)

Step-by-step explanation:

Given that :

Sample size, n = 31

Sample mean, xbar = 0.2258

Sample standard deviation, s = 0.0188

Confidence interval (C. I) :

xbar ± margin of error

Margin of Error : Tcritical * s/sqrt(n)

Degree of freedom, df = n - 1 = 31 - 1 = 30

Tcritical value :

T0.05/2, 30 = 2.042

Margin of Error = 2.042 * 0.0188/sqrt(31)

Margin of Error = 0.0068949

C. I = 0.2258 ± 0.0068949

Lower boundary : (0.2258 - 0.006895) = 0.2189

Upper boundary : (0.2258 - 0.006895) = 0.2327

(0.2199 ; 0.2327)

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2 years ago
Classify this triangle
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Answer:

Right triangle

Step-by-step explanation:

becuase it is

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3 years ago
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