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3 years ago

I'm in 5th grade and need help with and

Mathematics

2 answers:

patriot [66]3 years ago

4 0

Answer:

11046.4

Step-by-step explanation:

Cloud [144]3 years ago

3 0

Answer:

the answer is 11046.4

Step-by-step explanation:

if u can pls can u give me brainiest

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Altogether, the members of an exercise club drink

Lostsunrise [7]

Answer: 105 members.
Explanation: 840/8=104

5 0

2 years ago

Find the minimum sample size necessary to be 99% confident that the population mean is within 3 units of the sample mean given t

SVEN [57.7K]

Answer:

The minimum sample size required is 207.

Step-by-step explanation:

The (1 - α) % confidence interval for population mean μ is:

$CI=\bar x\pm z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

The margin of error of this confidence interval is:

$MOE=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

Given:

$MOE=3\\\sigma=29\\z_{\alpha /2}=z_{0.01/2}=z_{0.05}=2.576$

*Use a z-table for the critical value.

Compute the value of n as follows:

$MOE=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}\\3=2.576\times \frac{29}{\sqrt{n}} \\n=[\frac{2.576\times29}{3} ]^{2}\\=206.69\\\approx207$

Thus, the minimum sample size required is 207.

3 0

3 years ago

Banu is 20 years older than Vinu. In 5 years, Banu will be twice as old as Vinu. Find their present ages.

Whitepunk [10]

Answer:

Anjan po sa pic hashegs

5 0

2 years ago

Find the scale factor please.

torisob [31]

Answer:

5/2

Step-by-step explanation:

The scale factor for linear measures, such as perimeter, is the square root of the scale factor for areas. The ratio of larger area to smaller is ...

... 75/12 = 25/4

so the ratio of the larger perimeter to the smaller is ...

... √(25/4) = 5/2

3 0

3 years ago

Decrease 18 tonnes by 30%

AVprozaik [17]

18 t - 18 t * 30% = 18 t - 17 * 0,3 = 18 t - 5,4 t = 12,6 t

5 0

2 years ago

I'm in 5th grade and need help with and ​

I'm in 5th grade and need help with and