3 years ago

$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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Answer:

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Step-by-step explanation:

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Evaluate. (a−2b)3 when a=−2 and b=−12

ASHA 777 [7]

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

let's evaluate :

$(a - 2b) {}^{3}$

$\{ - 2 - (2 \times - 12) \}$

$\{ - 2 - ( - 24)\}$

$\{ - 2 + 24 \}$

$22$

the required value is 22

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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?

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Answer:

4a plus or minus 1b

Step-by-step explanation:

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Answer:

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It has negative slope if you imagine a line

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