construct a grammar over [a, b, c}whose language is [anb2ncm \n, m >0).

Answers

Answer 1

S is the start symbol, and A, B, and C are non-terminal symbols. These rules generate the desired language by allowing you to create strings with n a's, 2n b's, and m c's.

To construct a grammar for the language [anb2ncm \n, m >0] over the set {a, b, c}, we can follow these steps:

1. Start with the start symbol S.
2. For every a in the language, add an A to the grammar.
3. For every b in the language, add two Bs to the grammar.
4. For every c in the language, add a C to the grammar.
5. Add a production rule for S that generates an A and a B pair, followed by a C. This ensures that the language has at least one a, two b's, and one c.
6. Add a production rule for A that generates another A, followed by an a. This allows for the generation of any number of a's in the language.
7. Add a production rule for B that generates two more B's, followed by a b. This allows for the generation of any even number of b's in the language.
8. Add a production rule for C that generates another C, followed by a c. This allows for the generation of any number of c's in the language.

The resulting grammar would be:

S -> ABBC
A -> aA | a
B -> BBb | bb
C -> cC | c

This grammar generates strings such as "abbc", "aabbcc", "aaaabbbbbbcccccc", and so on, which are all in the language [anb2ncm \n, m >0].
To construct a grammar for the language L = {anb2ncm | n, m > 0} over the alphabet {a, b, c}, you can use a context-free grammar with the following production rules:
1. S → ABC
2. A → aA | a
3. B → bbBc | bbc
4. C → cC | c

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Related Questions

y2-y1m =X2-X1Find the slope of the line that passesthrough these two points.Simplify completely.(1,5)(4.6)[2]

y2-y1m =X2-X1Find the slope of the line that passesthrough these two points.Simplify completely.(1,5)(4.6)[2]

Answers

Okay, here we have this:

Considering the provided points and information, we are going to calculate the requested slope, so we obtain the following:

m=(y2-y1)/(x2-x1)

m=(6-5)/(4-1)

m=1/3

Finally we obtain that the slope of the line is 1/3.

I desperately need the answer please what is a chair

Answers

Answer:

a seat-that u sit on when you are teird ummmm yeah have a nice dayyyy

Express each of these statment using quantifires :
a) every student in this classes has taken exactly two mathematics classes at this school.
b) someone has visited every country in the world except Libya

Answers

Using quantifiers; a) ∀ student ∈ this class, ∃ exactly 2 mathematics classes ∈ this school that the student has taken and b) ∃ person, ∀ country ∈ the world (country ≠ Libya), the person has visited that country.

a) "Every student in this class has taken exactly two mathematics classes at this school."

In this statement, we have two main quantifiers:

Universal quantifier (∀): This quantifier denotes that we are making a statement about every individual student in the class. It indicates that the following condition applies to each and every student.

Existential quantifier (∃): This quantifier indicates the existence of something. In this case, it asserts that there exists exactly two mathematics classes at this school that each student has taken.

So, when we combine these quantifiers and their respective conditions, we get the statement: "For every student in this class, there exists exactly two mathematics classes at this school that the student has taken."

b) "Someone has visited every country in the world except Libya."

In this statement, we also have two main quantifiers:

Existential quantifier (∃): This quantifier signifies the existence of a person who satisfies a particular condition. It asserts that there is at least one person.

Universal quantifier (∀): This quantifier denotes that we are making a statement about every individual country in the world (excluding Libya). It indicates that the following condition applies to each and every country.

So, when we combine these quantifiers and their respective conditions, we get the statement: "There exists at least one person who has visited every country in the world (excluding Libya)."

In summary, quantifiers are used to express the scope of a statement and to indicate whether it applies to every element or if there is at least one element that satisfies the given condition.

Therefore, Using quantifiers; a) ∀ student ∈ this class, ∃ exactly 2 mathematics classes ∈ this school that the student has taken and b) ∃ person, ∀ country ∈ the world (country ≠ Libya), the person has visited that country.

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Please help solve this problem

Please help solve this problem

Answers

Answer:

120m/s

Step-by-step explanation:

v-? (speed)

s-5400m(travel)

t-45s(time)

v=s/t

v=5400/45

v=120m/s

Let 0° < a < 90°
Given: cos a=7/25
Find: sin a and cot a

Answers

The solutions are:

sin(a)  = 24/25

tan(a) = 24/7

For a given point (x, y) and an angle "a" measured counterclockwise from the positive x-axis to a ray that connects the origin with our point, we can think on the situation as a triangle rectangle.

Where the ray is the hypotenuse, the x-component is the adjacent cathetus, and the y-component is the opposite cathetus.

So we have:

x = adjacent cathetus

y = opposite cathetus

h = hypotenuse = √(x^2 + y^2)

Then the trigonometric relations become:

cos(a) = x/√(x^2 + y^2)

sin(a) = y/√(x^2 + y^2)

tan(a) = y/x

Now, we know that we have:

cos(a) = 7/25

then we can see that:

x = 7

and

h = 25 = √(7^2 + y^2)

We can solve the above equation for y:

25 = √(7^2 + y^2)

25 = √(49 + y^2)

25^2 = 49 + y^2

625 - 49 = y^2

√576 = y = 24

Then we have:

x = 7

y = 24

h = 25

Now we can return to our known trigonometric relations and get:

sin(a) = y/√(x^2 + y^2) = 24/25

tan(a) = y/x = 24/7

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Solve each system of equations by substitution. Clearly identify your solution.


y=3x+19

y=5x+33

Answers

Answer:

(x, y) = (-7, -2).

Step-by-step explanation:

To solve the system of equations:

y = 3x + 19

y = 5x + 33

We can use the substitution method, which involves solving one equation for one variable and substituting that expression into the other equation. Then we can solve for the remaining variable.

From the first equation, we can solve for y in terms of x:

y = 3x + 19

From the second equation, we can solve for y in terms of x:

y = 5x + 33

Now we can substitute the expression for y from the first equation into the second equation:

3x + 19 = 5x + 33

Simplifying this equation by subtracting 3x from both sides:

19 = 2x + 33

Subtracting 33 from both sides:

-14 = 2x

Dividing both sides by 2:

x = -7

Now that we have the value of x, we can substitute it back into either equation to find the value of y:

y = 3x + 19

y = 3(-7) + 19

y = -21 + 19

y = -2

The solution to the system of equations is (x, y) = (-7, -2).

Isaiah is ordering a sub sandwich for lunch. He can have turkey, ham, chicken, roast beef, or tuna. His bun choices are wheat, honey oat, and white. How many different sub combinations can Isaiah order?

Answers

Answer:

45 different sandwiches

Step-by-step explanation:

The tendency to perceive meaningful patterns in random sequences of outcomes often leads us to underestimate the extent to which outcomes result from.

Answers

The tendency to perceive meaningful patterns in random sequences of outcomes often leads us to underestimate the extent to which outcomes result from CHANCE .

The word "chance" describes unpredictability or the unexpected in relation to things like events that happen without a clear reason why and without human intention.

The conclusion is that chance is the tendency of people to recognize different kinds of significant patterns in a random order or sequence in addition to evaluating any kind of outcome. Because chance can also result in an underestimating of a system's conclusion or result, it is crucial to consider it when conducting an investigation.

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What is the remainder when the product 1998 × 1999 × 2000 is divided by 7?

Answers

Answer:

As a fraction: 7988004000/7

As a decimal: 1141143428.571429

Step-by-step explanation:

Multiply (1998)(1999)=3994002

Multiply (3994002)(2000)=7988004000

As a fraction it will be 7988004000/7

Turn it into a decimal!

Just divide 7988004000 by 7 or 7988004000/7

This should be: 1141143428.571429

13. Jack has to make at least $140 per week mowing lawns. He makes $20 per lawn. At least
how many lawns does he need to mow?

Answers

Answer:

7

Step-by-step explanation:

you divide 140 by 20 & it gives you 7 i hope this helps ..

ben and chris start at the same time from places 96miles apart to cycle toward each other, ben at 16mph and chris at 12mph. if ben rests for 1/2 hour on the way, after how many hours will they meet?

Answers

Ben and Chris will meet after 3.5 hours.

What is the LCM?

The least Common Multiple is the meaning of the acronym LCM. The lowest number that may be divided by both numbers is known as the least common multiple (LCM) of two numbers. It may also be computed using two or more real numbers.

Given:

Ben and Chris start at the same time from places 96 miles apart to cycle toward each other,

Ben at 16mph and Chris at 12mph.

The LCM of 12 and 16 is,

= 48.

So, they will meet after 3.5 hours.

Therefore, they will meet after 3.5 hours.

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A greengrocer buys 20 cases of oranges at a cost of $15 per case. Each case contains 10 kg of oranges. If he sells the oranges at $4/kg, how many kilograms must he sell before he makes a profit? If he sells all the oranges what will be his profit?

Answers

Answer:greengrocer should Dell 17 kg before profit. 500$ profit

Step-by-step explanation:

need to talk to somebody pls and wzup

Answers

Hiii what you wanna talk about

The length of the base of a triangle is twice its
height. If the area of the triangle is 256 square
kilometers, find the height.

Answers

½*b*h = area of ∆

½*2h*h = 256

h² = 256

therefore, h = √256

h = 16m.

Answer:

16km

Step-by-step explanation:

The area formula for a triangle is ...

A = (1/2)bh

We are told that b=2h, so this becomes ...

 A = (1/2)(2h)(h) = h²

Substituting the given area, we can find h:

 256 km² = h²

 (√169) km = h = 16 km

Can someone draw 2 examples of an Adjacent a non-congruent angle? For geometry I’m rly stuck :(

If you would like you can help for the other ones but it’s not necessary

Can someone draw 2 examples of an Adjacent a non-congruent angle? For geometry Im rly stuck :(If you

Answers

I hope this helpss.
Can someone draw 2 examples of an Adjacent a non-congruent angle? For geometry Im rly stuck :(If you

Suppose you have $320. If you decide to spend it all on ice cream, you can buy 80 pints. If the price of a glass of lemonade is 3.2 times less than the price of ice cream, how much iemonade can you buy if you decide to spend all your money on it? if necessary, round all intermediate calculations to two decimal places and your final answer to the nearest whole number.

Answers

To know how much lemonade you can buy with $320, we first need to determine the price of a pint of ice cream. Since you can buy 80 pints with $320, the price of one pint of ice cream is $320 divided by 80, which equals $4.

Next, we need to find the price of a glass of lemonade, which is 3.2 times less than the price of ice cream. Therefore, the price of a glass of lemonade is $4 - (3.2 * $4) = $4 - $12.8 = -$8.8.

Since the price of lemonade is negative, it indicates that you will receive money back for every glass of lemonade you buy. However, since you cannot have a negative quantity of lemonade, the answer would be zero.

In summary, with $320, you can buy zero glasses of lemonade.

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Please help!! im confused

Please help!! im confused

Answers

Answer:

8.5

Step-by-step explanation:

you cut them in half. when it says clicks per second it means per one second. so if you get 17 clicks in 2 seconds you just cut it in half.

1) As you know, the area of a square is A = x , where for this problem, A is area in feet and x is the length of a side, in feet. If the length of a side is changing at a rate of 6 feet/minute when the length of a side is 4 feet, at what rate is the area changing?

Answers

The answer is 2 feet

HELP ASAP PLEASE I'LL MARK BRAINLIEST ​

HELP ASAP PLEASE I'LL MARK BRAINLIEST

Answers

Answer:

the answer is C

write an expression with a value of 12. it should contain four numbers and two different operations.

Answers

The expression with a value of 12 and containing four numbers and two different operations are 2 × 2 + 4 + 4 = 12.

To write an expression with a value = 12 it should contain four numbers and two different operations, we can use the following method:

Firstly, multiplying :

2 × 2 = 4                   -----1

secondly, adding:

4 + 4 = 8                   -----2

finally, adding 1 and 2 we get,

4 + 8 = 12

Therefore, the expression with a value of 12 containing four numbers and two different operations is 2 × 2 + 4 + 4 = 12.

Another example is 35 ÷ 5 + 10 ÷ 2 = 12.#

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A skateboarder wants to build a ramp to get over a cement wall. The height of the wall is 10 feet. If the ramp is 20 feet long, what is the angle of elevation between the ground and the ramp?

Answers

Answer:

θ = 30°

Angle of elevation is 30°

Step-by-step explanation:

Given;

Height of wall w = 10 ft

Length of ramp l = 20 ft

Angle of elevation = θ

Applying trigonometry;

Sinθ = opposite/hypothenuse

Where;

Height of wall w = opposite (it's opposite the angle of elevation)

Length of ramp l = hypothenuse

Sinθ = w/l

θ = arcsine (w/l)

Substituting the values;

θ = arcsine (10/20)

θ = arcsine (0.5)

θ = 30°

Angle of elevation is 30°

to add 0.01 0.02 ... 1.00, what order should you use to add the numbers to get better accuracy?

Answers

To achieve better accuracy when adding the numbers from 0.01 to 1.00, it is recommended to add the numbers in ascending order (from smallest to largest) to minimize the accumulation of rounding errors and maintain higher precision during intermediate calculations. Thus, starting with 0.01 and ending with 1.00 would provide better accuracy.

To achieve better accuracy when adding the numbers from 0.01 to 1.00, it is generally recommended to use an order that minimizes the accumulation of rounding errors. In this case, it is advisable to start with the smaller numbers and progress towards the larger ones.

By adding the numbers in ascending order (from 0.01 to 1.00), the rounding errors at each step will have a smaller impact on the overall result. This is because adding smaller numbers together first helps maintain a higher level of precision during intermediate calculations.

Therefore, to achieve better accuracy, you should add the numbers in ascending order, starting with 0.01 and ending with 1.00.

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Can someone please help me?

Can someone please help me?

Answers

Answer:

x ≈ 50.8°

Step-by-step explanation:

Using the sine ratio in the right triangle

sin x = \(\frac{opposite}{hypotenuse}\) = \(\frac{JK}{IK}\) = \(\frac{6.2}{8}\) , then

x = \(sin^{-1}\) (\(\frac{6.2}{8}\) ) ≈ 50.8° ( to the nearest tenth )

Is 4.01 greater,less,or equal then 4.9

Answers

Answer:

Less

Step-by-step explanation:

What is the value of the expression 8 3/5 (-22.8)?

Answers

Answer:

-528/25

Step-by-step explanation:

Find the median:51,53,49,51,53,50,54,56​

Answers

Answer:

52

Step-by-step explanation:

Answer:

52

Step-by-step explanation:

49, 50, 51, 51, 53, 53, 54, 56

the middle are (51,53) and when u have 2 numbers in the middle u add them up and divide by two which gives us 52:)

You find a strong negative correlation between two variables t and p. Does this necessarily imply that there is a causal relationship between the variables?

yes
or
no?

thank you so much in advance

Answers

A correlation between 2 variables does not imply causation.


PLEASE HELP 40 POINTS !!!!

Use function notation to write the equation of the line.

PLEASE HELP 40 POINTS !!!! Use function notation to write the equation of the line.

Answers

Answer:

Step-by-step explanation:

Its not that hard.. just use your brain or wait for someone else.

A company invests $12,000 to produce a product that will sell for $49.60. Each unit costs $7:45 to produce. (a) How many units must the company sell to break even? units (b) How many units must the company sell to make a profit of $115,0002 units

Answers

Answer:

Step-by-step explanation:

a=number of products

product profit=49,60-7,45=42,15

115000+1200=42,15xa

127000=42,15xa

a=3013

On a coordinate plane, a line is drawn from point L to point M. Point L is at (negative 4, 8) and point M is at (4, 8).
The rule DO,0.25 (x, y) → (0.25x, 0.25y) is applied to the segment LM to make an image of segment L'M', not shown.

The coordinates of L' in the image are
.

The coordinates of M' in the image are
.

The length, L'M', is
.

The slope of the original segment and dilated segment are
.

Answers

Answer:

L' = (-1,2)

M' = (1,2)

L'M' = 2

The slope of the original segment and dilated segment are both zero

Step-by-step explanation: just did it on edge!

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