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3 years ago

Maths question 11 divided by 4 please give me the answer in decimal as fast as u can

Mathematics

2 answers:

Dmitry_Shevchenko [17]3 years ago

7 0

2.75

Step-by-step explanation:

skad [1K]3 years ago

3 0

$\sf\purple{2.75}$ ✅

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}$

$\frac{11}{4} \\ = 2.75$

$\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.ඞ}}}}}$

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Why do you think people who are good at math are usually successful on their jobs?

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3 years ago

In a random sample of 30 people who rode a roller coaster one day, the mean wait time is 46.7 minutes with a standard deviation

Rainbow [258]

Answer: C. $(29,\ 37.8)$

Step-by-step explanation:

The confidence interval for difference of two population mean is given by :-

$\overline{x}_1-\overline{x}_2\pm z_{\alpha/2}\sqrt{\dfrac{s_1^2}{n_1}+\dfrac{s_2^2}{n_2}}$

Given : Level of significance : $1-\alpha:0.99$

Then , significance level : $\alpha: 1-0.99=0.01$

Critical value : $z_{\alpha/2}=z_{0.005}=2.576$

$n_1=30\ ;\ n_2=50\\\\\overline{x}_1=46.7\ ;\ \overline{x}_2=13.3\\\\s_1=9.2\ ;\ s_2=1.9$

$46.7-13.3\pm(2.576)\sqrt{\dfrac{9.2^2}{30}+\dfrac{1.9^2}{50}}\approx33.4\pm4.38=(29.02\ ,37.78)\approx(29,\ 37.8)$

Hence, a 99% confidence interval for the difference between the mean wait times of everyone who rode both rides $(29,\ 37.8)$

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4 years ago

Circumference (rounding)

KonstantinChe [14]

Answer:

Step-by-step explanation:

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will give you

40.82 = 41

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3 years ago

Read 2 more answers

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quester [9]

The answer would be x= 4,-4

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4 years ago

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Alex17521 [72]

Answer:

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Step-by-step explanation:

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3 years ago