In a catalog, movies are identified by an ID number—2 letters followed by 3 digits.Repetitions are permitted. How many catalog numbers can be made?What is the probability that the ID number is divisible by 5? (Include the 2 letters in the ID number.)

Answers

Answer 1

Using the Fundamental Counting Theorem, it is found that:

676,000 catalog numbers can be made.There is a 0.2 = 20% probability that the ID number is divisible by 5.

What is the Fundamental Counting Theorem?

It is a theorem that states that if there are n things, each with [tex]n_1, n_2, \cdots, n_n[/tex] ways to be done, each thing independent of the other, the number of ways they can be done is:

[tex]N = n_1 \times n_2 \times \cdots \times n_n[/tex]

For the 2 letters(26 outcomes each), and 3 numbers(10 outcomes each), we have that the parameters are:

[tex]n_1 = 26, n_2 = 26, n_3 = 10, n_4 = 10, n_5 = 10[/tex]

Hence the number of catalog numbers is:

[tex]N = 26^2 \times 10^3 = 676000[/tex]

The ID number is divisible by 5 if the last digit is either 5 or 0, hence [tex]n_5 = 0[/tex] and the probability is:

[tex]p = \frac{26^2 \times 10^2 \times 2}{26^2 \times 10^3} = 0.2[/tex]

There is a 0.2 = 20% probability that the ID number is divisible by 5.

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Related Questions

Dalvin drove 190 miles in 5 hours. If he continued at the same rate, how far would he travel in 8 hours?

Answers

Calvin would travel 304 miles in 8 hours.
Answer:  304 miles

Explanation:

Dalvin drives 190 miles in 5 hours. His speed is 190/5 = 38 mph.

From here we would say the following

distance = rate*time

distance = (38 mph)*(8 hrs)

distance = 304 miles

A whale swimming against an ocean current traveled 140 mi in 7 h. Swimming in the opposite direction, with the current, the whale was able to travel the same distance in 3.5 h. Find the speed of the whale in calm water and the rate of the ocean current.

Answers

The whale exists swimming at 30 mph in calm water and the current exists flowing at 10 mph.

How to estimate the speed of the whale in calm water and the rate of the ocean current?

Let x be the speed of a whale in calm water

and y be the speed of the current

In 7 hours the whale swims against the current and travels 140 miles:

7(x - y) = 140

x - y = 140/7

x - y = 20 ...........(1)

In 3.5 hours the whale swims the same distance with the current:

3.5(x + y) = 140

x + y = 140/3.5

x + y = 40 ...........(2)

Adding (1) and (2), we get the value of x:

x - y = 20  + ...........(1)

x + y = 40 ...........(2)

-----------------

2x = 60

x = 60/2

x = 30

Using this value for "x" in either (1) or (2) we can solve for "y":

x - y = 20 ...........(1)

substitute for "x"

30 - y = 20

10 = y

Therefore, the whale exists swimming at 30 mph in calm water and the current exists flowing at 10 mph.

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21:28 simpleest form

Answers

Answer:

3:4

Step-by-step explanation:

If you divide both sides by 7, you shall get 3:4

Would be 3:4 don’t ask me how I know

MULTIPLICATION! QUESTIONS!

a) 9x2
b)16x2
c)14x9
d)20x10
e)10x3

Answers

Answer:

a) 9×2=18

b)16×2=32

c)14×9=126

d)20×10=200

e)10×3=30

If f(x) = 4x-x², find
square root f(3/2)

Answers

Answer:

[tex]\frac{\sqrt{15} }{2}[/tex]

Step-by-step explanation:

[tex]\sqrt{f(\frac{3}{2} )[/tex] , substitute [tex]\frac{3}{2}[/tex] to x

[tex]f(\frac{3}{2} )=4(\frac{3}{2} )-(\frac{3}{2} )^2[/tex] = [tex]\frac{15}{4}[/tex] or 3.75

[tex]\sqrt{f(\frac{3}{2} )[/tex]=[tex]\sqrt{3.75}[/tex] = [tex]\frac{\sqrt{15} }{2}[/tex]

A meal consists of an appetizer, a main dish, a side dish, and a drink. There are 3 appetizer choices, 6 main dish choices, 5 side dish choices, and 4 drink choices. Describe two ways you could find the number of possible combinations. Choose one of the methods to find the answer, and explain your choice.

Answers

1) You can find the number of possible methods through a tree diagram or the fundamental counting principles.

2) The total number of combinations is 360

What is the tree diagram and the fundamental counting principles all about in finding the total number of combination?

To find the total number of combinations,

A Tree Diagram is a the various possibilities in a pictorial way. The diagram begins with a single point, which represents the initial decision, then branches out to indicate all possible outcomes for each successive option.

The Fundamental Counting Principle tells us that if there are 'n' ways doing a thing and 'm' ways to do another, there are n x m ways to do both. Which means that the total number of outcomes equals the product of the number of ways each job can completd.

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U.S. Customary unit conversion with mixed number values: One... A cook needs 7 cups of vegetable stock for a soup recipe. How much is this in pints? Write your answer as a whole number or a mixed number in simplest form. Include the correct unit in your answer.​

Answers

The pints of vegetable stock the chef needs is [tex]3\frac{1}{2}[/tex].

How many pints does he need?

The first step is to determine the unit of conversion of cups to pints.

1 cup = 0.5 pints

To convert cup to pints, multiply 7 by 0.7

7 x 0.5 = 7/2 = [tex]3\frac{1}{2}[/tex]

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Art store sells packages to different sized square Picture frames the side length of the larger frame SX is modeled by the function SX equals three square root X minus one where X is the area of the smaller frame in square inches which graph shows us

Answers

Option A graph represents  S(x).

What is a Function ?

Function is a statement that relates tow variables.

It is given that

the side length of the larger frame S(x)

S(x) =  [tex]\rm 3 \sqrt{x -1}[/tex]

X is the area of the smaller frame in square inches

A square root function is given by

s(x) = [tex]\rm \sqrt{x}[/tex]

when the graph is shifted towards right and stretched by  3 , due to which the graph is taller as compared to the parent graph and

Therefore Option A graph represents  S(x).

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Which linear inequality is represented by the graph?
O y > ²/ ²x-3/1/2 -X 5
O y²³x+²/ 1
O y ≤ ² x + 1/1/0
O y< ²/x - / / -X 5​

Answers

The linear inequality depicted by the graph is: [tex]y \leq \frac{2}{3}x + \frac{1}{5}[/tex]

What is a linear function?

A linear function is modeled by:

y = mx + b

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For this line, when x = 0, y = 0.2, hence the y-intercept is of b = 0.2. When x = 3, y = 2.2, hence the slope is given as follows:

[tex]m = \frac{2.2 - 0.2}{3 - 0} = \frac{2}{3}[/tex]

Hence the equation of the line is:

[tex]y = \frac{2}{3}x + 0.2[/tex]

[tex]y = \frac{2}{3}x + \frac{1}{5}[/tex]

The inequality is the values below(less) than the line, also including it, as it is not dashed, hence:

[tex]y \leq \frac{2}{3}x + \frac{1}{5}[/tex]

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graph Y=-2x-3 and y=-x+6

Answers

See the graph in the attached image.

Giving brainliest to first correct answer

Answers

Answer:

C

Step-by-step explanation:

The area of a rectangle is lw or length * width.

We can add the parts to make up the whole of each side.

Thus, for the entire width, we have 4x+3 and for the entire length we have 8 + 5x.

To solve for area in terms of x, we just multiply our width and length, which gives us:  

[tex](4x+3)(8+5x)\\32x+20x^2+24+15x\\20x^2+47x+24[/tex]

A die is tossed three times. let X be the sum of the three numbers obtained.

Determine whether the random x has a binomial distribution if so take the number of trials n. If it doesn’t explain why.

Answers

Since for each trial there are more than two outcomes, the random variable x is not a binomial variable.

What is required for a binomial variable?


Three things are required:

Each trial has only two possible outcomes.Trials are independent.There is a fixed number of trials.

In this problem, for each trial, there are six possible outcomes for the sum, hence the random variable x is not a binomial variable.

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use the m=y2-y1/x2-x1 to find the slope of the line that goes through each pair of points A.(5,7) and (-4,-2) B.(1,3) and (1,-10)

Answers

The required slope of A is 1 or Ф = 45° and for B is infinte or Ф = 90°


use the m=y2-y1/x2-x1 to find the slope of the line that goes through each pair of points A.(5,7) and (-4,-2) B.(1,3) and (1,-10)

What is slope?

slope is define as the angle at which line is inclined and for draw tangent over a curve.

m=y2-y1/x2-x1

For, A (5, 7),(-4, -2)
m=-2-7/-4-5
m=1
or TanФ=1
Ф = 45°


For, B(1, 3), (1,-10)
m=-10-3/1-1
m= ∞ or Ф = 90°

Thus the required slope of A is 1 or Ф = 45° and for B is infinte or Ф = 90°

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In a graphing program, graph the following 3 functions in the same coordinate plane.
y=1x
y=1x+3
y=1x – 2
How does k (+3 and -2 in functions b & c) change the rational graph? Select the best description from the words below. (Hint: one fits)
compresses-fatter
shifts right/left
reflects over x-axis
shifts up/down
stretches-steeper
reflects over y-axis

Answers

The values of k (i.e. +3 and -2) in functions b and c change the rational graph by (b) shifts right/left

How to determine the change in the rational graph?

The functions are given as:

[tex]y = \sqrt x[/tex]

[tex]y = \sqrt {x + 3[/tex]

[tex]y = \sqrt {x - 2[/tex]

See attachment for the graphs of the three functions.

From the attached graph, we can see that [tex]y = \sqrt {x + 3[/tex] and [tex]y = \sqrt {x - 2[/tex] are at the left and right of the function [tex]y = \sqrt x[/tex]

Hence, the values of k in functions b and c change the rational graph by shifting it right/left

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Whats the corect answer answer asap for brainlist

Answers

Answer:

water pollution or any one of them.

Step-by-step explanation:

Technically, these are all issues in the Netherlands.

However, based on a statista opinion chart of Netherland concerns, the biggest concern at the moment is pollution.

So, picking any of these might work because they are all issues - but I found that the environmental one is most likely to be correct.

Answer:

Water pollution

Explanation:

"Crime (48 percent) and environmental pollution (45 percent) are most often seen as (very) serious problems." - cbs

the the area of a rectangle with perimeter 40 cm and 75 cm square find the length and width of the rectangle​

Answers

Answer: 15cm and 5cm

Step-by-step explanation:

A rectangle's area is the product of the length and width

Given length x and width y, 2x+2y = 40 and x*y = 75.

Verifying my answer:

2(15)+2(5) = 40

30+10 = 40

40 = 40

15*5 = 75

75= 75

This is a week late so I hope this helped.

The length and the width of the rectangle​ are 15cm and 5cm respectively

How to find the length and width of the rectangle​?

The given parameters are:

Area (A) = 75

Perimeter (P) = 40

The area of a rectangle is LW, while the perimeter is 2(L + W)

So, we have:

LW = 75

2(L + W) = 40

Divide by 2

L + W = 20

Make L the subject

L = 20 - W

Substitute L = 20 - W in LW = 75

(20 - W)W = 75

Expand

20W - W^2 = 75

Rewrite as:

W^2 - 20W + 75 = 0

Expand

W^2 - 15W - 5W + 75 = 0

Factorize

(W - 15)(W -5) = 0

Split

W - 15 = 0 or W - 5 = 0

Solve for W

W = 15 or W = 5

Recall that:

L= 20 - W

So, we have

L = 20 - 15 or L = 20 - 5

This gives

L = 5 or L = 15

Hence, the length and the width of the rectangle​ are 15cm and 5cm respectively

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Mia has 24 yards of ribbon. She gave 10 yards to her sister. Mia now wants to work on a project that requires 2 1/4 yards of ribbon per project. What is the greatest number of projects Mia can complete with this ribbon.

(Optional, just please write down step by step explanation) PLEASE ANSWER WITH EXPLANATION AS IF YOU WERE WRITING DOEN ON SCRATCH PAPER

Answers

Answer:

6 projects

Step-by-step explanation:

Original ribbon length = 24 yards

After 10 yards given to sister, Mia is left with 24-10 = 14 yards of ribbon

Each project requires 2 1/4 yards of ribbon.

2 1/4 is 9/4 yards as an improper fraction (2 * 4 + 1 is the numerator and the denominator is unchanged)

We now have to figure out how many times 9/4 yards goes into 14 yards.

For this,

14 ÷ 9/4.
To do this, flip the numerator and denominator of the fraction and multiply

14 ÷ 9/4 = 14 × 4/9 = 56/9 . We ignore any remainder.

9 goes into 56 6 times with remainder of 2 (ignore remainder)
In other words the greatest number of projects = 6

A frozen yogurt store charges C dollars for w ounces of frozen yogurt, and C can be modeled by C = 49w+80/100. According to the model, for every increase of 1 ounce in frozen yogurt, by how many dollars will the cost increase?

Answers

A function assigns the values. For every increase of 1 ounce in frozen yogurt the cost will increase by $49.

What is a Function?

A function assigns the value of each element of one set to the other specific element of another set.

Given the frozen yogurt store charges C dollars for w ounces of frozen yogurt, C can be modelled by C = 49w+80/100. Therefore, for every increase of 1 ounce in frozen yogurt the cost will increase by $49.

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In the space provided, describe the similarities and differences between the seasonal changes of the oak tree in Florida and the oak tree in Maine make it Conclusions

subje

Answers

As a result of climatic peculiarities the seasonal changes of oak tree in Florida and oak in Maine are distinguished such that the differences are remarkably satisfactory.

What are the seasonal changes of the oak tree in Florida and the oak tree in Maine?

We know that many oaks are native to Florida and some of the Florida oaks include;

Shumard oakWillow oakSouthern live oak.

Northern red oaks can also be found in northern Florida. Some other oak trees in Florida include;

Black oakBluff oakChapman oakChinkapin oakLaurel oak.

From the information above, we can conclude that as a result of climatic peculiarities the seasonal changes of oak in Florida and oak in Maine are distinguished such that the differences are remarkably satisfactory.

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Using the driver's speed in feet per second, how far did her car travel during her reaction time?Round your answer to two decimal places

Answers

The distance traveled by the driver during her reaction time based on her speed was 44 feet.

How far did the driver get during her reaction time?

find the speed in feet per second to be:

= (40 x 5,280 feet per hour) / Number of seconds in an hour

= 211,200 / 3,600

= 58.67 feet per second

With a reaction speed of 3/4 seconds, the distance traveled is:

= 58.67 x 3/4

= 44 feet

Full question is:

The driver of a car traveling at a speed of 40 miles per hour had to stop the car quickly. Using the driver's speed in feet per second, how far did her car travel during her reaction time of 3/4 of a second?Round your answer to two decimal places

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Tommy starts walking from school to home at the same time that his Dad starts walking from home to school. They both depart at 3:00 p.m. Tommy is walking at a speed of 1.35 meters per second, and his Dad is walking at a speed of 1.65 meters per second. The distance between home and school is 720 meters. At what time will they meet?

Answers

Answer:

3:04

Step-by-step explanation:

see image

They will meet after 4 minutes from 3:00 p.m. So, they will meet at 3:04 p.m.

Let's find the time it takes for Tommy and his Dad to meet.

Let t be the time (in seconds) from 3:00 p.m. when they meet.

Tommy's distance covered (T) after t seconds is given by:

T = Tommy's speed * t

   = 1.35 m/s * t

His Dad's distance covered (D) after t seconds is given by:

D = Dad's speed * t

  = 1.65 m/s * t

Since they meet when the sum of their distances is equal to the total distance between home and school, we can write the equation:

T + D = 720 meters

Substitute the expressions for T and D:

1.35t + 1.65t = 720

t = 240 seconds

Since 1 minute is equal to 60 seconds, let's convert the time to minutes:

t = 240 seconds / 60 seconds/minute

t = 4 minutes

They will meet after 4 minutes from 3:00 p.m. So, they will meet at 3:00 p.m. + 4 minutes = 3:04 p.m.

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Recursive formula of the arithmetic sequence 4,9,14,19

Answers

Answer:

4,9,14,19,24,29,34,39

17.3152 to the nearest hundredth=

Answers

Answer:

17.32

Step-by-step explanation:

since there is a 5 in the thousandths, we round the 1 in the hundredths up and get 17.32

Write the equation of the line with slope -5 and y-intercept 300.

Answers

The slope-intercept form is y=mx+b

m=slope=-5

y-int/b = 300

so, y = -5x+300 is the equation of the line

The average price of a personal computer (PC) is $949. If the computer prices are approximately normally distributed and standard deviation is $100, what is the probability that a randomly selected PC costs more than 1200? The least expensive 10% of personal computers cost less than what amount?

Answers

The probability that a randomly selected PC costs more than 1200 will be 0.006. The least expensive 10% of personal computers cost less than what amount will be 820.8.

What is a normal distribution?

The Gaussian distribution is another name for it. The most significant continuous probability distribution is this one. Because the curve resembles a bell, it is also known as a bell curve.

The z-score is given as

z = (x – μ) / σ

Where μ is the mean, σ is the standard deviation, and x is the sample.

The average price of a personal computer (PC) is $949.

If the computer prices are approximately normally distributed and standard deviation is $100.

Then the probability that a randomly selected PC costs more than 1200 will be

z = (1200 – 949) / 100

z = 2.51

Then  the probability will be

P(x > 1200) = P(z > 1200)

P(x > 1200) = 1 – P(z < 1200)

P(x > 1200) = 1 – 0.99396

P(x > 1200) = 0.0060366

The least expensive 10% of personal computers cost less than what amount will be

z-value for 10% will be -1.282.

– 1.282 = (x – 949) / 100

– 128.2 = x – 949

          x = 820.8

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show a graph that represents y>-6x+5?

Answers

The slope m = -6 and y-intercept = ( 0, 5 ).

The graph is a dash line, shaded area above the boundary line since y is greater than -6x + 5.

What is the graph that represents the given equality?

Given that;

y > -6x + 5

We use the slope intercept form y = mx + b to determine the slope (m) and the y-intercept (b).

y > -6x + 5

y = mx + b

We can see that;

m = -6 and b = 5

Hence, slope = -6 and y-intercept = ( 0, 5 ).

The graph is a dash line, shaded area above the boundary line since y is greater than -6x + 5.

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A shipping company must design a closed rectangular shipping crate with a square base. The volume is 2880ft3. The material for the top and sides costs $3 per square foot and the material for the bottom costs $7 per square foot. Find the dimensions of the crate that will minimize the total cost of material.

Answers

The dimensions of the crate that will minimize the total cost of material are 10, 10, and 29.

How to compute the dimension?

The volume will be:

= Length × Width × Height

= lwh

For the square base, w = l

2880 = w²h

The cost function will be:

C = 12wl + 4wh + 4lh

Put l = w.

C = 12w² + 8wh

C = 12w² + 8w(2880/w²)

C = 12w² + 23040/w

Differentiate with respect to w

C'(w) = 0

24w = 23040/w²

24w³ = 23040

w³ = 960

w = 10 approximately

The length is 16 as well as they are the same. The height will be:

= 2880/w²

= 2880/10²

= 28.8 = 29

Therefore, the dimensions are 10, 10, and 29.

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3. The total weight of the luggage on the flight is 4,338 pounds . What is the weight written in tons and pounds ?​

Answers

Hello!

The weight is 4,338 pounds and 2.169 tons.

Answer: 2 tons and 338 pounds

Step-by-step explanation:

1 ton is 2000 pounds

4338 has 2 tons and 338 pounds

Please help word problems challenging for me

Answers

Answer:

36 Adult Tickets. 352 Student Tickets

Step-by-step explanation:

Firstly, we have to create 2 expressions to solve a problem like this. If we use the variable s to mean student and a to mean adult, we can create the expressions:

3s + 6a = 1272 to represent how much they made with all ticket sales

s = 10a - 8 to represent how many student tickets there are.

Now, we plug our definition of s into the first expression to get:

3(10a - 8) + 6a = 1272

30a - 24 + 6a = 1272

36a - 24 = 1272

36a = 1296

a = 36

We have determined the number of adult tickets so we can move on to the number of students:

s = 10(36) - 8

s = 360 - 8

s = 352

Question Solved

What is the inverse of the equation y=3x ?

Answers

Answer:

y = x/3

Step-by-step explanation:

y = 3x

x = 3y

3y = x

y = x/3

⊱_____________________________________________________⊱

Answer:

[tex]y=\dfrac{x}{3}}[/tex]

Step-by-step explanation:

[tex]\large\displaystyle\begin{gathered} \rm{To \ find \ the \ inverse, \ switch \ the \ places \ of \ x \ and \ y} \\ \sf{ y=3x} \\ \sf{x=3y} \\ \rm{Now \ solve \ for y} \\ \sf{x/3=y} \\ \sf{\dfrac{x}{3}=y \end{gathered}[/tex]

done !!

⊰______________________________________________________⊱

Cαllíɡɾαρhγ
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