Sam and Taylor own and operate a car wash service. Sam cleans the interior of each car and Taylor cleans the exterior. The time it takes Sam to finish the interior has a mean of 20 minutes with a standard deviation of 6.4 minutes. The time it takes Taylor to finish the exterior has a mean of 18 minutes with a standard deviation of 4.8 minutes. Both of their finishing times are approximately normally distributed.
Suppose we select a car at random, and define the random variable D as the difference between their finishing times. We can assume that their times are independent.
Find the probability that they finish within 10minutes of each other.
You may round your answer to two decimal places.
P\left(|D|<10\right)\approxP(∣D∣<10)≈P

Answers

Answer 1

Answer: 0.77

Step-by-step explanation:

Khan academy answer


Related Questions

Members of a baseball team raised $1199.50 to go to a tournament. They rented a bus for $830.50 and budgeted $30.75 per player for meals. Determine the number of players the team can bring to the tournament.

Answers

Answer:

The team can bring 12 players to the tournament.

Step-by-step explanation:

With the information provided, you can say that cost of going to a tournament is equal to the cost of renting the bus plus the result of multiplying the cost per player for meals for the number of players, which is:

c=830.50+30.75x, where:

c is the cost of going to a tournament

x is the number of players

Now, you can replace c with $1199.50 that is the total amount they raised and solve for x:

1199.50=830.50+30.75x

1199.50-830.50=30.75x

369=30.75x

x=369/30.75

x=12

According to this, the answer is that the team can bring 12 players to the tournament.

What is the answer to 8w+56?

Answers

Answer:

What is w equal to?

Step-by-step explanation:

8(w+7) sorry if it’s wrong

at Best Buy they have a stereo system at the cells of 22000 and is on sale for 15% and sales tax is 7%. what is the final cost

Answers

Answer:

4,840

Step-by-step explanation:

15% of 22000 is 3300 and 7% of 22000 is 1540 so add those together to get 4840.

What is f(3) if f(x) = 2x + 1?

Answers

Plug in 3 for x
f(3) = 2(3) + 1
f(3) = 6 + 1
Solution is 7

Answer:

f(3) = 7

Step-by-step explanation:

To evaluate f(3), substitute x = 3 into f(x), that is

f(3) = 2(3) + 1 = 6 + 1 = 7

you are ____________

Answers

Answer:

Nice, beautiful,kind,smart

Answer:

Intelligent, Outstanding, Wonderful, Spontaneous, And Delightful.

Plssss help plsssssss

Answers

Answer:

7

Step-by-step explanation:

Side AB corresponds to side DE, so they musty be congruent.

5x + 2 = 37

5x = 35

x = 7

The answer to your problem would be 7

Given:
Quadrilateral ABCD is similar to Quadrilateral GHIJ.
Find the value of x.
A. 4.5
B. 8
C. 9
D. 12
E. 18

Answers

Answer:

A. 4.5

Step-by-step explanation:

no one is answering i need help asap

Answers

Answer:

32t + 72

Step-by-step explanation:

8(4t+9)

4t(8) + 9(8)

32t + 72

Answer:32t+72

Step-by-step explanation:

Answer these PLEASE AND SHOW THE WORK YOU HAVE ONE HOUR PLEASE SAY MY GRADE

Answers

That’s a lot of pressure

HELP ASAP!!!!!!!

what does 97= -3 (6n - 5) - 8 equal?

Answers

Answer:

n = -5

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation: 97-(-3*(6*n-5)-8)=0

 97 -  ((0 -  3 • (6n - 5)) -  8)  = 0

 Pull out like factors: 18n + 90  =   18 • (n + 5)

Solve  :    n+5 = 0

Subtract  5  from both sides of the equation: n = -5

Hope this helps! Please mark as brainlest.

Thanks!

Answer:

n=-5

Step-by-step explanation:

Distribute the -3 into the parenthesis to get.

97=-18n+15-8

Next combine like terms to get.

97=-18n+7

Next isolate the variable to get.

90=-18n

Now Isolate the variable term to get.

n=-5

Brainliest Plz.

Can some help ?? I’ll give brainliest

Answers

Answer:

d

Step-by-step explanation:

the answer is d.

pemdas

you multiply the #s in the parenthasese first. so u get 3times x wich is 3x and six times three wich is 18

ok how is every ones day ok what is 12345 times 23456=

Answers

The answer is 289,564,320. Have a nice day and Happy Holidays

the question is on the sheet.​

Answers

area of the whole figure

[tex] = (x + 1)(2x + 3) \\ = x(2x + 3) + 1(2x + 3) \\ = 2 {x}^{2} + 3x + 2x + 3 \\ = {2x}^{2} + 5x + 3[/tex]

area of the unshaded region

[tex] = x(2x) \\ = {2x}^{2} [/tex]

area of the shaded region

[tex] = {2x}^{2} + 5x + 3 - {2x}^{2} \\ = ( {2x}^{2} - {2x}^{2} ) + 5x + 3 \\ = 5x + 3[/tex]

THEREFORE,

THE AREA OF THE FRAME IS C. 5x + 3

-4/5 divided by 1/3​

Answers

Answer:

-12/5 or -2.4

Step-by-step explanation:

(-4/5) / (1/3) =

(-4/5) x (3/1) =

-12/5

-12/5 = -2.4

Answer:

[tex]\frac{-(\frac{4}{5})}{\frac{1}{3}} = -(\frac{4}{5}) * (\frac{3}{1} )= -\frac{12}{5}[/tex]

Step-by-step explanation:

1. Dividing fractions means multiplying the reciprocal-- so turn the fraction upside down and multiply by the first.

2. What is the y-intercept of this graph?
25 points
O A1
OB. 2
O c. 2
O 0.4

Answers

where is the graph though

52*6854454^((3)/(6))-:82673+476455555365555567-23627457546234*465566=?

Answers

Sawarasenai kimi wa shoujo na no?~

Boku Wa yaRcHin BiCChi nO oSu Da YO!~~

10 to the power of 19 hope this helped

A store sells posters for $12.50 each and picture frames for $30.00 each. One day, the store sells a total of 32 posters and
picture frames combined for a total of exactly $645.00.
How many posters and picture frames does the store sell on that day?
O 13 posters and 16 picture frames
14 posters and 18 picture frames
16 posters and 16 picture frames
18 posters and 14 picture frames

Answers

Answer:

D

Step-by-step explanation:

Answer:

option D: 18 posters and 14 picture frames

Step-by-step explanation:

It isn't the first one because it doesn't have a total of 32 combined sales

It isn't the second because the total money is $715.00

It isn't the third because the money totals out to $680.00

The answer is the fourth option because the total product sold is 32 and the total money earned is $645.00

Solve for b.
b=ah
b=a/h
b=ha
b=h/a
Group of answer choices

Answers

Answer:

b) b=a/h

Step-by-step explanation:

A=bh

Dividing both side by h,

or, b=A/h

OR,

A=bh

or, b=A/h

Answer:

b

Step-by-step explanation:

uhm

Please help !!
-
Omar buys stuffed animals for $4 each. He sells them for $7 each. Is this a markup of markdown situation? What is the percent profit?

Answers

Answer:

This is a markup situation, since the price increased. The percent of profit would be 75% because 7-4=3, 3/4 = 75%

A shopkeeper buys 10 television sets from a retailer at a rate of Euro 15,000 per set. He sells half of them at a profit of 25 % and rest half at a loss of 20%. Find the overall profit/loss faced by the shopkeeper.

Answers

Answer: Profit of $3,750

Step-by-step explanation:

Sold half of the sets at a profit of 25%;

= (15,000 * 5 sets) * 25%

= $‭18,750‬

Sold the other half at a loss of 20%;

= (15,000 * 5) * 20%

= $15,000

Profit (loss) = 18,750 - 15,000

= $3,750

help asap,, show work if you can,, will give brainliest:)

Answers

Answer:

it is 0  but put x

Step-by-step explanation:

Answer:

x=5

Step-by-step explanation:

substitute y for 3x

x+3x=20

combine like terms

4x=20

divide by 4

x=5

Price of Rope
3 The amount a hardware store pays for buying nylon rope
is represented by the equation y = 0.12%, where y is the
price it pays for x feet of rope. The amount the hardware
store charges when selling the rope is represented by
the graph
The profit the store makes on the rope can be found by
subtracting the amount it charges for the rope from the
price it pays for the rope. If the store sells 80 feet of rope,
how much profit does it make on that rope?
Show your work.
y
A
1.80
1.60
1.40
ū1.20
8 1.00
0.80
0.60
0.40
0.20
0 1 2 3 4 5 6
Length (ft)

Answers

Answer:

The answer is 2.25 that makes profit

Step-by-step explanation:

882372900083018x454
teheheh come here

Answers

Answer:

22otvllslsbbegf. 23+15

Step-by-step explanation:

help plzzzz ill give extra points

Answers

Answer:

12x

16x, 320

20

Step-by-step explanation:

Hope this helps

Solution :-

Total equation ,

[tex]\displaystyle\sf\to 4x+\boxed{\sf 12}x=\boxed{\sf 320}[/tex]

[tex]\displaystyle\sf\to \boxed{\sf 16}x=\boxed{\sf 320}[/tex]

[tex]\displaystyle\sf\to x =\boxed{\sf 20}[/tex]

A store is having a 20%-off sale on all pairs of shoes. Kurt wants to buy a pair of shoes that have a regular price of x dollars. The sales tax is 7%. Which expression represents the final price of the shoes?

Answers

Answer:

[tex]\$ \ \dfrac{428}{500}x[/tex]

Step-by-step explanation:

Regular price of a pair of shoes = $[tex]x[/tex]

Discount offered = 20%

Amount of discount offered = 20% of $[tex]x[/tex]

Discounted price = Regular price - Amount of discount

Discounted price = $[tex]x[/tex] - 20% of $[tex]x[/tex] = 80% of $[tex]x[/tex] = [tex]\$ \frac{4}{5}x[/tex]

Now, it is given that there is a sales tax of 7% as well on the price.

Sales tax is applied on the discounted price.

Therefore, sales tax = 7% of [tex]\$ \frac{4}{5}x[/tex]

Final Price after applying the sales tax = [tex]\$ \frac{4}{5}x[/tex] + 7% of [tex]\$ \frac{4}{5}x[/tex]  

[tex]\Rightarrow 107\%\ of\ \$\ \ \dfrac{4}{5}x[/tex]

[tex]\Rightarrow \$ \ \dfrac{428}{500}x[/tex]

Therefore, the expression to represent the final price of the pair of shoes:

[tex]\$ \ \dfrac{428}{500}x[/tex]






Plz hurry brainleist and 17 or 18 points garranteed

Which best describes when the body is working on counteracting an effect?
O when hormone levels in the body are all equal
O during a negative feedback loop
O during a positive feedback loop
O when the hypothalamus is signaling the pituitary gland

Answers

The answer is during a negative feedback loop

Answer:

I can 100% confirm that it is B negative feedback

Step-by-step explanation:

is right on EDGE

fine the slope (2, 6), (–8, 11) *

A) m = -2/1
B) m = 1/2
C) m = -1/2
D) m = -2

Answers

the slope, m, equals (y2-y1)/(x2-x1) ->>> (11-6)/(-8–2) = 5/-10= -1/2

If Eugene can buy three cantaloupes for $7. Then how many can you buy with $14


If anyone could help me please on number 4

Answers

I believe the answer would be 6 because 7x2=14 so 3 cantaloupes x 2= 6

$1.29 + $2.52+$2.23+$1.50.
please help ​

Answers

Answer:

$7.54

Step-by-step explanation:

Answer:

$7.54

Step-by-step explanation:

you solve by adding all the money together

A website rents new-release movies for $3 and older movies for $2. The revenue, r, of the website can be represented by the equation r = 3n + 2m, where n is the number of new-release movies rented and m is the number of older movies rented. Last month, the revenue was $6,840 and 1740 new release movies were rented Enter the number of older movies that were rented by solving for m.

m =​

Answers

Answer:

[tex]m=810[/tex]  

Step-by-step explanation:

[tex]r=3n+2m[/tex]

Where

[tex]r=6840\\n=1740\\m=?[/tex]

[tex]6840=3(1740)+2m\\6840=5220+2m\\6840-5220=5220+2m-5220\\1620=2m\\\frac{1620}{2} =\frac{2m}{2} \\m=810[/tex]

Answer :[tex]m=810[/tex]

PLEASE MARK ME AS BRAINLIEST

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