3 years ago

Is -6.75 a rational or irrational number?

1 answer:

5 0

The number -6.75 is rational if it is an integer or decimal. -6.75 is a decimal, so -6.75 is rational, not irrational.

ANSWER: rational

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Sheryl got these scores on her spelling tests.

erica [24]

Answer:

5.6

Step-by-step explanation:

Sheryl got the following scores on her spelling tests.

95, 89, 99, 85, 82

Mean = sum of all observations/ Number of observations

Sum of all observations $=95+89+99+85+82=450$

Number of observations = 5

So,

Mean $=\frac{450}{5}=90$

Let M denotes the mean

Mean absolute deviation $=\frac{\sum_{i=1}^{n}\left | x_i-M \right |}{n}$

Put $n=5$

So,

Mean absolute deviation $=\frac{\sum_{i=1}^{5}\left | x_i-M \right |}{5}=\frac{|95-90|+|89-90|+|99-90|+|85-90|+|82-90|}{5}=\frac{5+1+9+5+8}{5} =\frac{28}{5}=5.6$

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3 years ago

PLEASE ANSWER QUICK

Grace [21]

D

Because that would mean the bottom equals 0. And it’s impossible to divide anything by 0

8 0

3 years ago

Tanvi’s town voted on a new speed limit. Of the votes received, 20 were in favor of the new speed limit and 80 were opposed. Wha

vodomira [7]

it would be 20%

20 + 80 = 100

20 / 100 = 0.2

5 0

2 years ago

I need to know how to solve the question

Ket [755]

I think you divide 1/2 by -2/5 and then add that to -1/4....

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3 years ago

A sweatshirt that was originally priced at $42.50 has been marked down to $34.00. What is the percent decrease?

vichka [17]

Answer:

The answer is 20%

I hope this helps :)

6 0

2 years ago

Read 2 more answers