Benny the Barber (see Question 1) is considering the addition of a second chair. Customers would be selected for a haircut on a FCFS basis from those waiting. Benny has assumed that both barbers would take an average of 20 minutes to give a haircut, and that business would remain unchanged with customers arriving at a rate of two per hour. Find the following information to help Benny decide if a second chair should be added: Part (a): The average number of customers waiting. Part (b): The average time a customer waits. Part (c): The average time a customer is in the shop.

Answer:

18 divided by 2/9, or 18/(2/9) (Is this what the first option was meant to say?)

Step-by-step explanation:

18 inches is the amount of space that needs to be filled, or divided up into sections to see how many things can fit.

2/9 is the width of the thing that you need to see how many fit, meaning it's the thing you're dividing by.

Combined, this means your expression is 18 divided by 2/9, or 18/(2/9). I think this is what your first option was meant to say, because if it is what it says, then the first and second option would be the exact same wrong thing.

You DON'T multiply, because if you think about easy numbers, an inch thick book should have 18 fit, and a half-inch thick book should have double that fit. As you get a smaller book, the number that fit increase, which can't happen with multiplication.

You also don't start with 2/9 because that's the width of the book. You're not trying to see how many boxes can fit into each book; that'd be ridiculous.

Answer:

It's A.

Step-by-step explanation:

Answer:

760

Step-by-step explanation:

Make me brainliest

please

9 students scored a 76 on the test :)

9514 1404 393

Answer:

  19.9 cm

Step-by-step explanation:

The Pythagorean theorem tells you the square of the hypotenuse is the sum of the squares of the legs.

  h² = 19² +6² = 361 +36 = 397

  h = √397 ≈ 19.9

The measure of the hypotenuse is about 19.9 cm.

if any doubt leave a comment

Answer as an improper fraction = 10/3 inches

Answer as a mixed number = 3 & 1/3  inches

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Explanation:

Multiply the two given values to get (2/3)*5 = (2/3)*(5/1) = 10/3

Optionally, you can convert that to a mixed number

10/3 = (9+1)/3 = (9/3) + (1/3) = 9 + (1/3) = 3 & 1/3

Answer:

Step-by-step explanation:

Refer to attached

Find the y-intercept:

Find the x-intercepts:

We have vertices of the triangle at:

Base of the triangle is:

Height of triangle:

The area is:

Answer:

7.5 unite square

Step-by-step explanation:

someone already explained so i will just tell you the steps. I deeply apologize for the inconvieence, grammer mistakes, and lack of showing work.

step 1.

find the x- and y intercepts

step 2.

find the vertexes

step 3.

pug the points onto the cordiante plane

s

Answer:

5

Step-by-step explanation:

10/2=5

6/3=2

20/10=2

Answer:

Step-by-step explanation:

Answer:

d,e,f

Step-by-step explanation:

Answer:

Linear:

A, C, F

Not Linear:

B, D, E

Answer:

1,748x7=12,236

Step-by-step explanation:

i think this is right...

There are 2 blue marbles.

Hope that helped:)

Answer:

28+32e and 4 (8e+7)

Step-by-step explanation:

I did the quiz

The expressions equivalent to 3 (6e + 4) + 8 (e + 2) + 6e are : 4(8e + 7) And 28 + 32e

Those expressions that might look different but their simplified forms are the same expressions are called equivalent expressions. To derive equivalent expressions of some expressions, we can either make it look more complex or simple. Usually, we simplify it.

Given the expression as;

3 (6e + 4) +8 (e + 2) + 6e.

Expand the brackets ;

18e + 12 + 8e + 16 + 6e

Now Collect like terms together and simplify;

=18e + 8e + 6e + 12 + 16

=32e + 28

=28 + 32e

Then factorizing the result, we have;

32e + 28 = 4(8e + 7)

The expressions equivalent to 3 (6e + 4) + 8 (e + 2) + 6e are : 4(8e + 7) And 28 + 32e

Learn more about expression here;

https://brainly.com/question/14083225

#SPJ2

Answer:

Ooh my god sooo difficult

Answer:

165 miles in 3 hours

Step-by-step explanation:

1 hour = 55 milles

3hours=?

(3*55)/1

= 165 miles

Hence, correct.

Answer:

Step-by-step explanation:

1. Match the letters a, b, and c with their statement.

a = "We go to school on Memorial Day"

b = "Memorial Day is a holiday"

c = "We work on Memorial Day"

2. Underline the key words ( that have symbols)

We work on Memorial Day if and only if we go to school on Memorial Day.

We work on Memorial Day or Memorial Day is a holiday.

If we do not go to school on Memorial Day, then we work on Memorial Day.

Memorial Day is a holiday and we do not go to school on Memorial Day.

If we go to school on Memorial Day, then we work on Memorial Day.

3. Use the symbols and the letters.

We work on Memorial Day if and only if we go to school on Memorial Day.

                         c                           ⇔                             a

We work on Memorial Day or Memorial Day is a holiday.

                   c                         V                   b

If we do not go to school on Memorial Day, then we work on Memorial Day.

                            ~a                                           ⇒               c

Memorial Day is a holiday and we do not go to school on Memorial Day.

                       b                     ∧                        ~a

If we go to school on Memorial Day, then we work on Memorial Day.

                             a                                ⇒              c

Answer:

33 years old

Step-by-step explanation:

x = youngest sibling

y = oldest sibling

x + (x + 3) + (x + 3 + 3) = 90

3x + 9 = 90

3x = 81

x = 27

y = 27 + 3 + 3 = 33

Answer:

Slope: -1

Step-by-step explanation:

As the x values progress by one, the y values decrease by 1

slope = rise/run

rise = -1, run = 1

-1/1 = -1

Answer:

$597.78

Step-by-step explanation:

$559.98  * 6.75% = 37.798 = 37.80

$559.98  + 37.80  =$597.78

Answer:

Put the number being divided over the dividend as a fraction.

Step-by-step explanation:

Answer:

Here are a few useful simplified division tips: If the dividend and divisor are both even numbers, try dividing them first by 2. For example, if you've got to divide 196/22, divide them by 2 first. When you have 98/11, you'll find it easier to figure out the rest of it with the smaller numbers.

Step-by-step explanation:

More Divide by Number Tricks

Divide by 1 - Anytime you divide by 1, the answer is the same as the dividend.

Divide by 2 - If the last digit in the number is even, then the entire number is divisible by 2.

Divide by 4 - If the last two digits divide by 4, then the entire number is divisible by 4.

Answer:

x = 19

Step-by-step explanation:

The sum of interior angles in a triangle is equal to 180 degrees

3x + 7 + 5x + x + 2 = 180 add like terms

9x + 9 = 180 subtract 9 from both sides

9x = 171 divide both sides by 9

x = 19 replace x with 19 in expressions to find the angle measures

Answer:

12

Step-by-step explanation:

25 is 1/4 of 100, so you do 3 x 4 and you would get 12! Hope this helps!

Answer:

12 players

Step-by-step explanation:

Multiply the 3 players that are sick by 4, as 25*4 is 100.

Answer:

Step-by-step explanation:

1/2(13-5)+(4+8)^2

A. 148

B. 144

C. 20

D. 16

We must follow "PEMDAS" order of operations rules.  Anything inside parentheses must be done first, followed by exponentiation, multiplication and division, and finally additionl and subtraction.

1/2(13-5)+(4+8)^2 has three sets of parentheses enclosing mathematical expressions:  (1/2), (13 - 5) and (4 + 8).  These evaluate to:

                        1/2,       8,               12

and so we now have (1/2)(8) + (12)^2

Exponentiation is next.  We get:  (1/2)(8) + 144

Next is multiplication:                         4      + 144

Last is addition:                                       148

Answer A is correct:  148

8 x 9+4^2-(63/7)

is evaluated in the same way:

8 x 9+4^2-(9), followed by exponentiation:

8*9 + 16 - 9, followed by multiplication:

72 + 16 - 9 = 79 (Answer C)

Answer:

D. y = | x – 16.5 |

Step-by-step explanation:

If you want to write an equation for an absolute value function this is the parent function y=a|x-h|+k.

In order to write an equation that is 16.5 units right you would do this:

y=|x-16.5|

If you are moving units left the number -16.5 would become 16.5

Remember when you are moving that the number inside is always the opposite sign of where you are moving  

Here is the answer:

y=|x-16.5|

Hope This Helps!

...............................................................................................................................................

Just subtract 16.5 to the x , in parenthesis, to the existing equation.

For example,

if u r given y= x +3 --> y=(x-16.5)+3

Answer:

a is 10 and b is 100

Step-by-step explanation:

(a)- if you take 10 to the tenth power you'll get 100

(b)- if you take 100 to the 100th power you'll get 10,000

Using the normal distribution and the central limit theorem, it is found that there is an approximately 0% probability that the total number of candies Kelly will receive this year is smaller than last year.

Normal Probability Distribution

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

In this problem:

The probability is the p-value of Z when X = 122, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{122 - 140}{3}[/tex]

[tex]Z = -6[/tex]

[tex]Z = -6[/tex] has a p-value of 0.

Approximately 0% probability that the total number of candies Kelly will receive this year is smaller than last year.

A similar problem is given at https://brainly.com/question/24663213

Answer:

3/8

Step-by-step explanation:

1/4 = 2/8

1/8 + 2/8= 3/8

3/8 is simplified

Using the z-distribution, it is found that since the absolute value of the test statistic is greater than the critical value, the null hypothesis is rejected.

At the null hypothesis, we test if the proportions are the same, that is, their subtraction is 0, hence:

[tex]H_0: p_1 - p_2 = 0[/tex]

At the alternative hypothesis, it is tested if they are different, that is, their subtraction is not 0, hence:

[tex]H_1: p_1 - p_2 \neq 0[/tex]

The proportions and their respective standard errors are given by:

[tex]p_1 = 0.25, s_1 = \sqrt{\frac{0.25(0.75)}{120}} = 0.0395[/tex]

[tex]p_2 = 0.37, s_2 = \sqrt{\frac{0.37(0.63)}{150}} = 0.0394[/tex]

For the distribution of the difference, the mean and the standard error are given by:

[tex]\overline{p} = p_2 - p_1 = 0.37 - 0.25 = 0.12[/tex]

[tex]s = \sqrt{s_1^2 + s_2^2} = \sqrt{0.0395^2 + 0.0394^2} = 0.0558[/tex]

The test statistic is given by:

[tex]z = \frac{\overline{p} - p}{s}[/tex]

In which [tex]p = 0[/tex] is the value tested at the null hypothesis.

Hence:

[tex]z = \frac{\overline{p} - p}{s}[/tex]

[tex]z = \frac{0.12 - 0}{0.0558}[/tex]

[tex]z = 2.15[/tex]

The critical value for a two-tailed test, as we are testing if two values are different, with a significance level of 0.15 is [tex]|z^{\ast}| = 1.4395[/tex].

Since the absolute value of the test statistic is greater than the critical value, the null hypothesis is rejected.

A similar problem is given at https://brainly.com/question/25676691

Answer:

Median - 4.5 , i think

Step-by-step explanation: