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3 years ago

Help me please I need it

Mathematics

1 answer:

crimeas [40]3 years ago

3 0

Answer:

D. 11

Step-by-step explanation:

Add all the numbers and divide by 4

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A circular rug has a circular table in the middle. The diameter of the rug is 12 meters and the diameter of the table is 4 meter

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Answer:

100.53m² area of carpet is left after putting the table in place.

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3 years ago

Ill mark brainlist plss helpp

love history [14]

10,800 is the answer.
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3 years ago

A random sample of 20 married women showed that the mean time spent on housework by them was 29.8 hours a week with a standard d

DanielleElmas [232]

Answer:

95% confidence interval for the mean time spent on housework per week by all married women.

( 26.66 , 32.94)

Step-by-step explanation:

Step(i):-

Given random sample size 'n' = 20

Mean of the sample (x⁻ ) = 29.8 hours

Standard deviation of the sample (S) = 6.7

Given Margin of error = 3.14

Step(ii):-

95% confidence interval for the mean is determined by

$(x^{-} - t_{0.05} \frac{S}{\sqrt{n} } , x^{-} +t_{0.05} \frac{S}{\sqrt{n} })$

We know that margin of error is determined by

$M.E = \frac{t_{0.05}XS.D }{\sqrt{n} } = 3.14$

Now 95% confidence interval for the mean time spent on housework per week by all married women.

$(29.8 - 3.14 , 29.8+3.14)$

( 26.66 , 32.94)

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3 years ago

Mary has rehearsed her ballet solo for five and a half hours. A week from now, she wants to have rehearsed at least a total of n

djverab [1.8K]

The answer to this problem is 2

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3 years ago

Read 2 more answers

How to solve 10 (g+5)=2(g+9)

Ghella [55]

first multiply the outside numbers by both the numbers in the ()

10xg=10g 10x5=50 2xg=2g 2x9=18

then combine like terms

10g+50=2g+18

8g=32

then divide

g=4

4 0

3 years ago