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3 years ago

Need help asap!!!!!!!!!!

Mathematics

2 answers:

pentagon [3]3 years ago

6 0

The answer is 16. Yeah

Murrr4er [49]3 years ago

6 0

The average is .733333333... hope I helped ;)

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Ou are trying to estimate the average amount a family spends on food during a year. In the past, the standard deviation of the a

MA_775_DIABLO [31]

Answer:

The answer is "2653".

Step-by-step explanation:

$Sample \ Size = 99\% \ Cl\\\\ E =60 \\\\\sigma= 1200\\\\$

Minimum sample size for Cl level $= 99\%$ and Desired Margin of Error, $E = 60$ is:

$\to P(|\bar{x}-\mu| < E) \geq 1-\alpha \\\\\to P(\frac{\bar{x}-\mu}{\frac{\sigma}{\sqrt{n}}}$

$Margin \ Error = \frac{\text{length of the CI}}{2}\\\\\sigma=1200\\\\\alpha=1 - Confidence =1-0.99=0.01\\\\Z_{\frac{\alpha}{2}}=z_{0.005}=2.58\\\\n\geq (\frac{z_{0.005} \times \sigma }{E})^2 \\\\= (\frac{2.58 \times 1200 }{60})^2\\\\=2662.560\\$

The minimum n has to be integer, we take the ceiling Of above number and get n = 2663

The exact z-value.

$n \geq (\frac{2.5758293035489 \times 1200}{60})^2 \\\\= 2653.95864$

using critical value of 2,575, which gives 2652.25

$\to n =2653$

5 0

3 years ago

Find the value of x and HI. H and J are the endpoints

a_sh-v [17]

Answer:

x = 6

HI = 29

Step-by-step explanation:

✔️HI = ½(AB) => Triangle Mid-segment Theorem

HI = 5x - 1

AB = 58

Plug in the values and solve for x

5x - 1 = ½(58)

5x - 1 = 29

Add 1 to both sides

5x - 1 + 1 = 29 + 1

5x = 30

Divide both sides by 5

5x/5 = 30/5

x = 6

✔️HI = 5x - 1

Plug in the value of x

HI = 5(6) - 1

HI = 30 - 1

HI = 29

5 0

2 years ago

Find m congruent to S

dalvyx [7]

This is my answer
S = 90 degrees
Hope it help!!

4 0

3 years ago

Read 2 more answers

A sphere and a cylinder have the same radius and height. The volume of the cylinder is 48 cm³.

Taya2010 [7]

Answer:

32 cm³

Step-by-step explanation:

Volume of a sphere is:

$V_{s}=\frac{4}{3}\pi r^{3}$

Volume of a cylinder is:

$V_{c} = \pi r^{2} h$

The volume of the cylinder is 48 cm³.

The cylinder has the same radius (r) and height (2r) as the sphere.

$48 = \pi r^{2} (2r)\\48 = 2\pi r^{3}\\24 = \pi r^{3}$

Therefore, the volume of the sphere is:

$V_{s}=\frac{4}{3} (24)\\V_{s}=32$

7 0

2 years ago

Plz help me with this

erica [24]

Answer:

the answer is b

Step-by-step explanation:

b is 9 thank you

3 0

3 years ago

Read 2 more answers