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2 years ago

Help me please due before 10pm tonight

Mathematics

2 answers:

coldgirl [10]2 years ago

7 0

Answer:

Lindas share is 17.5

Nicks share is 8.5

Step-by-step explanation:

timofeeve [1]2 years ago

5 0

Answer:

If you divided the hours they worked and then add that to what they got all together and u should get the answer

Step-by-step explanation:

i hope this helps a little

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Determine the sum of the following series. ∑n=1[infinity](4^n+8^n/13n)

Gnoma [55]

N=1 4+7n=71 that is the answer

3 0

2 years ago

Anyone know this ???

mr Goodwill [35]

Answer:

B and C

Step-by-step explanation:

The 2 smallest numbers have to add up to be bigger then the largest number in the set for it to be a triangle! I hope this helps!

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2 years ago

If the lowest value of a data set increases what happens to the standard deviation

lara [203]

Answer:

It becomes lower

Step-by-step explanation:

This is because as the lowest value becomes larger, <em>one of the values becomes closer to the mean</em>, and as more numbers are closer to the mean, the standard deviation becomes lower.

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3 years ago

Suppose on a certain test, fifty students earn a perfect score and fifty students earn a zero. determine the mean grade and stan

kodGreya [7K]

Answer:

Mean=50.

standard deviation=50.

Step-by-step explanation:

Let the perfect score be 100.

The mean(average) of a data is given by: $Mean=\frac{sum of data points}{number of data points}$

Here the number of data points are 100. out of which 50 attains a value 100,and 50 attains value 0.

so, sum of data points=50×100+50×0=5000.

$Mean=\frac{5000}{100}$

Mean=50.

"Now the standard deviation of data points are calculated by firstly subtracting mean from every entry and then square the number and take it as new entry and calculate the mean of the new data entry and lastly taking the square root of this new mean".

Here if 50 is subtracted from each entry the new entry will have 50 entries as '50' and 50 entries as '-50'.

next on squaring we will have all the 100 entries as '2500'.

now the mean of these entries is: $\frac{2500\times100}{100}$