3 years ago

How long does it take the penguin to walk 45 feet?

Mathematics

1 answer:

Pavel [41]3 years ago

7 0

You have not mentioned any imformation such as speed of the penguin

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In Art Class, you designed a rectangle stained glass window. The

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Step-by-step explanation:

Draw a triangle and label the sides (picture below):

● the length is 2x+2

● and the width or the height is 6x

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● P = 2x+2 + 6x + 2x+2 + 6x

Isolate the similar terms

● P = (2x+2x+6x+6x) + (2+2)

● P = 16x + 4

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3 years ago

Tracy was given a bag of 250 colored marbles .She randomly chose marble , recorded its color in the table ,and returned it to th

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Answer:

Did you ever figured it out?

Step-by-step explanation:

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3 years ago

Whoever gets this right gets brainlyess answer and it's worth 10 points :)

Lunna [17]

60% = 0.6
12 / 0.6 = 20

answer 12 is 60% of 20

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3 years ago

Someone help and please make sure the answer is right

lord [1]

Answer:

it's 12

Step-by-step explanation:

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3 years ago

Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $30,

REY [17]

Answer:

a) 217

b) 1351

c) 5403

Step-by-step explanation:

Given that:

confidence interval (c) = 0.95

$\alpha =1-0.95=0.05\\\frac{\alpha }{2} =\frac{0.05}{2}=0.025$

The Z score of $\frac{\alpha }{2}$ is from the z table is given as:

$Z_{\frac{\alpha }{2} }=Z_{0.025}=1.96$

Range = $45000 - $30000 = $15000

The standard deviation (σ) is given as:

$\sigma=\frac{Range}{4} =\frac{15000}{4}=3750$

Sample size (n) is given as:

$n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2$

a) E = $500

$n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2= (\frac{1.96*3750}{500} )^2$ ≈ 217

b) $n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2= (\frac{1.96*3750}{200} )^2$ ≈ 1351

c) $n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2= (\frac{1.96*3750}{100} )^2$ ≈ 5403

7 0

3 years ago

Read 2 more answers