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3 years ago

Hello ya'll. I have a quick question to ask ya'll.

Mathematics

1 answer:

stepladder [879]3 years ago

8 0

Answer:

$3n$

Step-by-step explanation:

If the initial number is n, one less than n is n - 1, and one more than n is n + 1. so we have:

$n - 1 + n + n + 1=3n$

At first I thought this answer was too easy, so I tried for n is 6.

$3*6=18\\5+6+7=18$

This is really cool! Hope this helps!

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A restaurant hostess is paid $50 plus 10% of the waitstaff’s tips for each night she works. If y represents her pay each night a

andrew11 [14]

Answer:

Y+x=5

Step-by-step explanation:

3 0

4 years ago

Which of the following describes the numbers shaded on the hundred chart?

blagie [28]

Answer:

they are all multiples of 11

5 0

4 years ago

Read 2 more answers

The heights, in inches, of the starting five players on a college basketball team are 6868, 7373, 7777, 7575, and 8484. Co

LenKa [72]

Answer:

The sample standard deviation of 5.95.9 inches differs from the population standard deviation of 5.25.2 inches because of their formulas for calculating it.

Step-by-step explanation:

We are given the heights, in inches, of the starting five players on a college basketball team ;

68, 73, 77, 75 and 84

Now whether we treat this data as sample data or population data, the mean height would remain same in both case because the formula for calculating mean is given by ;

Mean = Sum of all data values ÷ No. of observations

Mean = ( 68 + 73 + 77 + 75 + 84 ) ÷ 5 = 75.4 inches

So, numerically, the sample mean of 75.4 inches is the same as the population mean.

Now, coming to standard deviation there will be difference in both sample and population standard deviation and that difference occurs due to their formulas;

Formula for sample standard deviation = $\frac{\sum (X_i - Xbar)^{2} }{n-1}$

where, $X_i$ = each data value

X bar = Mean of data

n = no. of observations

Sample standard deviation = $\frac{ (68 - 75.4)^{2} +(73 - 75.4)^{2}+(77- 75.4)^{2}+(75- 75.4)^{2}+(84 - 75.4)^{2} }{5-1}$

= 5.9 inches

Whereas, Population standard deviation = $\frac{\sum (X_i - Xbar)^{2} }{n}$

= $\frac{ (68 - 75.4)^{2} +(73 - 75.4)^{2}+(77- 75.4)^{2}+(75- 75.4)^{2}+(84 - 75.4)^{2} }{5}$ = 5.2 inches .

So, that's why sample standard deviation of 5.95.9 inches differs from the population standard deviation of 5.25.2 inches only because of formula.

7 0

3 years ago

Lisa has soccer practice at 3:45 PM. It takes her 10 minutes to warm up and 15 minutes to get from home to practice . What time

Alex17521 [72]

Answer:

she left at 3:20

Step-by-step explanation:

if her practice is at 3:45 and she used 25mins then she would need to leave at 3:20

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3 years ago

Which is taller? Statue of Liberty or the tallest tree in the world?

matrenka [14]

Look it up on google that’s what it’s for

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3 years ago