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3 years ago

Six workers can contruct a kitchen in 17 hours. How long should it take 9 workers to contruct the kitchen

Mathematics

1 answer:

3241004551 [841]3 years ago

4 0

It would be 8 and a half hours.

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The circumference of a circle is 11 inches. What is the area, in square inches, of the circle? Express your answer in terms of p

kakasveta [241]

Answer

A = 30.25pi. PLS GIVE BRAINLIEST

Step-by-step explanation:

so if circumference is 11, and formula for circumference is 2pi*r, we can work backwards to find the radius.

Radius: 11pi/2 = 5.5pi = 5.5 is radius

Area = pi * r^2

so Area = pi*5.5^2

so A = 30.25pi left in terms of pi

7 0

1 year ago

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Write the equation of a line in slope intercept form that contains the points (2,4) and (4,12)

a_sh-v [17]

Answer:

Y=4x-4

Step-by-step explanation:

8 0

3 years ago

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The height of a soccer ball that is kicked from the ground can

AveGali [126]

Answer:

87.5

Step-by-step explanation:

By completing the square,

=-14x^2+70x

=-14(x^2-5x)

=-14(x-5/2)^2+175/2

the max. height=175/2

i.e. 87.5

8 0

2 years ago

Help me it’s not D !!!!

jenyasd209 [6]

The answer to this is A.

8 0

3 years ago

The proportion of items in a population that possess a specific attribute is known to be 0.45. a. If a simple random sample of s

yanalaym [24]

Answer: 0.05

Step-by-step explanation:

Sampling error is the error occurs by considering sample for study instead of entire population.

Given : The proportion of items in a population that possess a specific attribute is known to be 0.45.

Sample size : n= 100

Sample proportion of items in a population that possess a specific attribute : $\hat{p}=0.48$

Now, the formula to find the sampling error :

$\text{Sampling error} =\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$\text{Sampling error} =\sqrt{\dfrac{0.48(1-0.48)}{100}}$

$=\sqrt{\dfrac{0.48(0.52)}{100}}\\\\=\sqrt{0.002496}\approx0.05$

Hence, the sampling error =0.05

4 0

2 years ago