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2 years ago

The square of the difference of six and y, divided by seven, is less than 2.

Mathematics

2 answers:

Tasya [4]2 years ago

6 0

Answer:

the square of the difference of six and y , divided by seven , is less than -2"

( 6 - y )^2 / 7 < -2

(6-y)2 / 7 < -2

alexira [117]2 years ago

5 0

Answer: (6-y)2 / 7 < -2

Step-by-step explanation:

( 6 - y )^2 / 7 < -2

(6-y)2 / 7 < -2

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The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The

zavuch27 [327]

The standard deviation of the frequency distribution is 5.54

<h3>How to determine standard deviation?</h3>

The table of values is given as:

x f(x)

0-3 13

4-7 13

8-11 10

12-15 11

16-19 0

20-23 3

Rewrite the table by calculating the class midpoints:

x f(x)

1.5 13

5.5 13

9.5 10

13.5 11

17.5 0

21.5 3

Start by calculating the mean using:

$\bar x = \frac{\sum fx}{\sum f}$

This gives

$\bar x = \frac{1.5 * 13 + 5.5 * 13 + 9.5 * 10 + 13.5 * 11 + 17.5 * 0 + 21.5 * 3}{13 + 13 + 10 + 11 + 0 +3}$

Evaluate

$\bar x = 7.98$

The standard deviation is then calculated as:

$\sigma = \sqrt{\frac{\sum f(x - \bar x)^2}{\sum f }}$

So, we have:

$\sigma= \sqrt{\frac{13 * (1.5 - 7.98)^2 + 13 * (5.5 - 7.98)^2 + (9.5 - 7.98)^2 * 10 + (13.5 - 7.98)^2 * 11 + (17.5 - 7.98)^2 * 0 + (21.5 - 7.98)^2 * 3}{13 + 13 + 10 + 11 + 0 +3}}$

Evaluate

$\sigma= \sqrt{30.6496}$

Solve

$\sigma= 5.54$

Hence, the standard deviation is 5.54

Read more about standard deviation at:

brainly.com/question/15858152

#SPJ1

7 0

1 year ago

20 points

blsea [12.9K]

The answer I think is 2+7+0.15x_>15

6 0

2 years ago

Read 2 more answers

PLRASE HELPPP PLS IM STUCK

GaryK [48]

Answer:

Khan Academy.

Step-by-step explanation:

You can go on khan academy and search up "percentages and numbers." The videos should immediately pop up. there are also lessons if you don't want to risk getting your problem wrong. If you are still confused and do not understand please just comment and I will respond.

3 0

1 year ago

What is the least common multiple of 21 and 30?

Arisa [49]

Answer should be 210

3 0

2 years ago

Read 2 more answers

Girls:3

kvasek [131]

Answer:

30 are girls, and 20 are boys because every 3 out of five students are girls, and every 2 out of 5 students are boys.