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2 years ago

What am I supposed to do here? I could use some help.

Mathematics

1 answer:

maw [93]2 years ago

6 0

If I'm correct...

The expression is not an equation. It is not solvable. I believe your expression here would be 1/3n because it is asking the relation of n feet to yards. Converting to yards from feet is to divide by 3, or multiply by the reciprocal, 1/3. So, by plugging your number of feet into the expression in place of n, you essentially divide by 3 and get your number of yards.

The equation is the actual solvable statement. You can use the expression to solve this. In the first part, you used the variable n for the number of feet. In this part, you use f instead. This new expression would be 1/3f. Now, what is that expression equal to? Well, you're solving for the number of yards. So, if the number of yards is represented by y, then the equation should be y=1/3f.

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Answer:

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2 years ago

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

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7 0

1 year ago

How many attemps you get everyday . what is the limit. its telling me you are out of answer for now

Katen [24]

Answer:im pretty sure its 2 then you can watch an ad for another answer

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Solve the equation.

Brrunno [24]

X^2 = 150
√x^2 = √150
x = 5√6 (or) ≈12.25

HOPE THIS HELPS!!!!

3 0

3 years ago

Read 2 more answers

A rope is 250 centimeters long. You need the rope to be 1 1/2 meters long. How many centimeters should you cut off?

Drupady [299]

If you would like to know how many centimeters should you cut off, you can calculate this using the following steps:

1 1/2 meters = 3/2 meters = 1.5 meters = 150 centimeters

250 centimeters - 1 1/2 meters = 250 centimeters - 150 centimeters = 100 centimeters = 1 meter

The correct result would be 100 centimeters.

6 0

2 years ago