3. (2 marks) A real estate agent has 8 keycards to open new model homes. Only one keycard will open any specific model home. If 40% of these homes are usually left unlocked, what is the probability that the real estate agent can get into a specific home if the agent chooses 3 keycards at random before leaving the office

Answers

Answer 1

Answer:

0.625

Step-by-step explanation:

We are told that the agent has 8 keycards.

We are also told that only one of the keycards can open each home.

Now, if the agent took 3 out of the 8 keycards with him, it means that;

Probability of opening by the keycards = ⅜

We are told that 40% or 0.4 of these homes were left unlocked.

This means that 60% or 0.6 are those that will require a key card.

Thus, probability of agent getting into a specific home is;

P(agent getting into a specific home) = 0.4 + 0.6(⅜)

P(agent getting into a specific home) = 0.4 + 0.6(0.375) = 0.625


Related Questions

Find the surface area of each solid. Round to the nearest tenth if necessary.
8 ft
6.97
8 fi
18 ft
8 ft
the surface area is
sq. ft.

Answers

Answer: 993.6

Step-by-step explanation:

height*base*depth=Area

8*6.9= 55.2

55.2*18= 993.6

Sorry if i gave you the wrong answer, I am super sorry

gkhoflkhlxrtuu;tdu8rp5[\78u

Answers

Answer:

What???

Step-by-step explanation:

Answer:

????

Step-by-step explanation:

Write each measurement below in the table under an equivalent measure. Some
of the measurements may not have an equivalent measure. (1 yard = 3 feet,
1 foot = 12 inches)

HELP PUT IN COMMENTS

Answers

1 yard=36 inches 1 foot=12 inches and 1/3 yard 1 inch= 1/36 yard and 1/12 foot

1748929jrjfjekcoododfog83772

What is the equation of the line in slope-intercept form?

Answers

Answer: y = -2x

Step-by-step explanation:

Look at the graph of the functions. Given the original function, what is a possible equation for the translated function, g(x)?

Answers

where’s the graph i can’t see it

Answer: c

Step-by-step explanation:

A crew of highway workers paved 9 mile in 20 minutes. If they work at the same rate, what portion of a mile
Will they pave in one hour?

A-1/150

B-2/45

C-2/5

D-5/2

Answers

-2/45.

Step-by-step explanation:

9 times 3 gives you 27 miles a hour. We are not done though. Now we have to find the  portion of a mile  they pave in one hour  would be -2/45, which is B.

. A uniform distribution is having the following shape ___.
A. bell-shaped C. bimodal
B. rectangular D. triangular

Answers

Answer:

B. rectangular

Step-by-step explanation:

A distribution is called uniform if each outcome has the same probability of happening.

In this case, the shape of the distribution is rectangular, as each outcome has the same probability of happening. So the correct answer is given by option B.

Find the measure of a 2.
45 135
62 = [?]

Answers

Answer:

45

Step-by-step explanation:

A farmer wants to fence a rectangular area of 12km2 and then divide it in half with a fence parallel to one of its sides of the rectangle find the dimensions of the rectangle that will minimize the amount of fencing used

Answers

Answer:1,000 meters

Step-by-step explanation:

Arsenic is a naturally

Answers

Yes it is correct



Mark brainlist

Calculate the unit rate. Label your work properly. Show your fraction work.

Math question : eating 3/4 pizza in 5/6 hour

Answers

Answer:

(9/10) of a pizza per hour.

Step-by-step explanation:

(3/4)*4=3

(5/6)*4= 3hr 20 mins

[3 (1/3)] / [3 (1/3)]=1

3 / [3 (1/3)]= 0.9

3/4. 5/6 hr
x. 1hr
x=3/4 •1 ÷ 5/6
x=3/4 • 6/5
x=18/20
x=9/10
Rate is 9/10 of pizza in one hour

Find the measure of line segment AB.​

Answers

Answer:

Measurement of AB = 8.6 units (Approx.)

Step-by-step explanation:

Given:

Coordinate of point A = (3 , 9)

Coordinate of point B = (8 , 2)

Find:

Measurement of AB

Computation:

Distance = √(X1 - X2)² + (Y1 - Y2)²

Measurement of AB = √(3 - 8)² + (9 - 2)²

Measurement of AB = √25 + 49

Measurement of AB = √74

Measurement of AB = 8.6 units (Approx.)

at a sporting event, you can buy 5 hot dogs and 2 drinks and spend $19. you could have also purchased 3 hot dogs and 4 drinks and sprnt $17. How much money did a hot dog cost? how much money did a drink cost?​

Answers

The answer is cash/$
The answer is $5 dollars because she bought so much food

please help!! I’m failing math and I have no idea what the answer is and if I don’t do my hw and keep failing I might have to repeat the grade! please let me know if you know the answer <3. I provided a photo! but I’ll but it here too

question⬇️⬇️

which expression is equivalent to 5(4x + 3) - 3x

A) 18x + 15

B) 18x + 3

C) 7x + 8

D) 2x + 8

Answers

Answer:

A: 18x+15

Step-by-step explanation:

5(4x+3)-2x

Distribute the 5

20x +15 - 2x

Combine like terms

20x-2x +15

18x +15

A single card is drawn from a standard deck of cards. Find the probability if the given information is known about the chosen card. (Enter the probability as a fraction.) P(queen|black)

Answers

Answer:

[tex]\frac{1}{13}[/tex]

Step-by-step explanation:

Given: A single card is drawn from a standard deck of cards.

To find: P(queen | black)

Solution:

Probability refers to chances of occurrence of any event.

Use the formula: P(A | B) = P(A∩B) ÷ P(B)

Let A denotes the event that the card drawn is queen.

Let B denotes the event that the card drawn is black.

Total number of cards = 52

Probability = Number of favorable outcomes ÷ Total number of possible outcomes

P(queen ∩ black) = P(card drawn is black and queen)

= [tex]\frac{2}{52}=\frac{1}{26}[/tex]

P(black) [tex]=\frac{26}{52}=\frac{1}{2}[/tex]

Therefore,

P(queen | black) = P(queen ∩ black) ÷ P(black)

= [tex]\frac{\frac{1}{26} }{\frac{1}{2} }=\frac{2}{26}=\frac{1}{13}[/tex]

Find the value of 3x for x=3

Answers

Answer:

9

Step-by-step explanation:

X MULTIPLIED BY 3 EQUALS 9 SINCE X=3

Answer:

9

Step-by-step explanation:

x=3

3*3= 9

so value of 3x = 9

Question
Use slopes and y-intercepts to determine if the lines 15x – 12y = -1 and 5x – 4y = -3 are parallel.

Answers

Answer:

They are parallel because they have the same slope of 5/4

Step-by-step explanation:

GUYS DONT GO TO THIS LINK

https://www.adultpayperview.com/dispatcher/frontDoor?theaterId=7021&genreId=101&locale=en

Answers

Answer:

ok

Step-by-step explanation:

Answer:

alright thank you for the warning :)

Step-by-step explanation:

Derek has 2 feet of Tasty Cherry Rope. He plans on splitting it evenly between himself and 5 of his friends. How many inches of Tasty Cherry Rope does Dereck have? *

Answers

Dereck has 4 inches of tasty cherry rope

answer the question in the pic below (math)

Answers

Answer:

46.95 in.²

Step-by-step explanation:

Surface area of the kaleidoscope = surface area of a triangular prism = 2(BA) + P*H

Base area (B) = 2(½*bh) = 2(½*1.5*1.3) = 1.95 in.²

Perimeter of base (P) = 1.5 + 1.5 + 1.5 = 4.5 in.

Height of prism (H) = 10 in.

Plug in the values

Surface area = 1.95 + 4.5*10 = 46.95 in.²

plz help me this work is hard​

Answers

The correct answer is D.

Find the surface area of the rectangular prism.

HELP ME PLS ASAP PLS PLZ WITH BOTHE!

Answers

Answer:

Cube - 600 Rectangular Prism - 350

Step-by-step explanation:

Cube - A=6a^2

Rectangular Prism - A=2(wl+hl+hw)

Answer:

1. 6x(10x10)=600cm

2. 2x(15x5+15x5+5x5)=350cm

What is your Patronus in harry potter?

Answers

Dog is my patronus but why is this in math lol

Answer:

My Patronus is a leopard. :)

Step-by-step explanation:

10/7-2/7 show work please

Answers

10/7 - 2/7

They both have common denominators so you can just subtract.

10-7 - 2/7= 9/2

9/2 is an improper fraction, so we need to convert it into a mixed number.

9/2 = 4 1/2

Answer:

10/7 - 2/7=  5 1/7

Step-by-step explanation:

it 5 1./7

giving brainliest!! *easy*

Answers

Answer:

288.68 square millimeters

288.68 square millimeters or  1703.12 square millimeters

Question 1:
A bag contains 5 black marbles, 7 blue marbles, 3 green marbles, 4 red marbles, and 1 white marble. A marble is selected and then replaced. What is the probability of selecting a black marble?


A 1/5

B 1/4

C 1/20

D 5




Question 2:
Mark has a bag of pink, blue and white gumballs. He randomly selects a gumball from the bag 30 times and records the color of the gumball each time. Before he selects another gumball he replaces the gumball he has already selected. The results are summarized in the table below.

Pink Blue White
Number of Times 8 12 10

Based on these results, determine whether each statement is True or False.

A The experimental probability of pink is 0.8

True
False

B The experimental probability of blue is 0.4

True
False

C It is more likely that Matk will select a blue gumball than a white gumball

True
False



Question 3:
When students line up in the cafeteria, they can choose their main course, drink, and dessert. For the main course students can choose a hot dog, burger, or pizza. For the drink they can choose between water, milk, or soda. And for the dessert they can choose cake or ice cream. The tree diagram shows all possible combinations of meals. Choose two correct answers below.



A The probability of randomly choosing pizza and cake is 3/18
Correct
Incorrect


B The probability of randomly choosing a hot dog, water, and ice cream is 1/3
Correct
Incorrect


C The probability of randomly choosing a burger and water is 1/18
Correct
Incorrect


D The probability of randomly choosing a burger, water, and cake is 1/18
Correct
Incorrect

E The probability of randomly choosing pizza is 1/18
Correct
Incorrect


100 points are awarded to the ones how answer right

Answers

Answer:

A 1/5

Step-by-step explanation:

3x^2+5x-28=0 solve this for me please

Answers

Answer:

x= 7/3

x=-4

Step-by-step explanation:

Use the quadratic formula

a= 3, b=5, c=-28

-5± [tex]\sqrt{5^2-4*3(-28)}[/tex]

x= _________________

              2.3

Simplfy

[tex]x=\frac{-5+19}{6} \\x=\frac{-5-19}{6}[/tex]

PLEASE HELP circle a has area 500in squared. the diameter of circle b is three times the diameter of circle a. esitmate the area of circle b.

Answers

Answer:

Step-by-step explanation:

r and d are the radius and diameter of a, respectively.

area of a = πr² = 500 in²

r = √500/√π = 10√5/√π

d = 20√5/√π

radius of b = 3r = 30√5/√π

area of b = π(30√5/√π)² = π(4500/π) = 4500 in²

Find the measure of <2.
62 = [?]

Answers

Answer:

63°

Step-by-step explanation:

They are corresponding angles.

The volume of a cube is 125 inches cubed. What is the length of each side?​

Answers

Answer:

5

Step-by-step explanation:

Explanation: All the edges of a cube have the same length, and the volume of a cube is the length of an edge taken to the third power. So the length of the edge of a cube with a volume of 125 is 5.

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