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LuckyWell [14K]
3 years ago
5

$21 is what percent of $28

Mathematics
1 answer:
saveliy_v [14]3 years ago
4 0

Answer:

75%

Step-by-step explanation:


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Scores on the Critical Reading part of the SAT exam in a recent year were roughly Normal with mean 495495 and standard deviation
My name is Ann [436]

Answer: 495

Step-by-step explanation:

We know that if the population is normally distributed with mean \mu  and standard deviation \sigma, then the sampling distribution of the sample mean , \overline{x} is also normally distribution with :-

Mean : \mu_{\overlien{x}}=\mu

Given : The scores on the Critical Reading part of the SAT exam in a recent year were roughly Normal with mean \mu= 495

Then , the mean of the average scores you get will be close to 495

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3 years ago
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step 2

Step-by-step explanation:

72/8 does not equal 8.  It equals 9

7 0
3 years ago
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Evaluate. (a−2b)3 when a=−2 and b=−12
ASHA 777 [7]

▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪

let's evaluate :

  • (a - 2b) {}^{3}

  • \{ - 2 - (2 \times  - 12) \}

  • \{  - 2 - ( - 24)\}

  • \{ - 2 + 24 \}

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the required value is 22

3 0
3 years ago
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The perimeter of a triangle is 7a-11b . If two of its sides are 2a+b and a-9b, what is the third side?
Masteriza [31]

Answer:

4a plus or minus 1b

Step-by-step explanation:

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2 years ago
Please help! i’ll give brainliest! thank u!
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It has negative slope if you imagine a line

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