s is a set of strings over the alphabet {a, b} and is defined recursively as follows: basis: λ∈sandb∈s recursive rules: if x is in s, then bxa∈sandaxb∈s .select the set that corresponds to all the strings in s of length 4. question 3 options: ∅ {bbaa, aabb} {baba, abab} {bbaa, aabb, baba, abab}

Answers

Answer 1

The set of strings in S of length 4 is given by option d) {bbaa, aabb, baba, abab}.

In summary, the set that corresponds to all the strings in S of length 4 includes bbaa, aabb, baba, and abab.To explain the answer, let's analyze the recursive definition of the set S. The basis states that the empty string (λ) belongs to S, and the character 'b' also belongs to S.

Using the recursive rules, we can generate longer strings by appending 'bxa' or 'axb' to existing strings in S. Starting with the basis, we can create strings of length 2: bba and abb.

Applying the recursive rules again, we can generate strings of length 4 by appending 'a' and 'b' to the previously obtained strings. This gives us bbaa, aabb, baba, and abab.Therefore, the correct option is d) {bbaa, aabb, baba, abab}, which includes all the possible strings in S of length 4, as derived from the given recursive rules.

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Related Questions

IF CORRECT, I WILL MARK AS BRAINLIEST
The fox population in a certain region has a continuous growth rate of 6 percent per year. It is estimated that the population in the year 2000 was 19100.

(a) Find a function that models the population t years after 2000(t=0 for 2000).
Hint: Use an exponential function with base e.
Your answer is P(t)=

(b) Use the function from part (a) to estimate the fox population in the year 2008.
Your answer is (the answer must be an integer)

Answers

a)

\( P(t) = 19100. e^{0.06t} \)

b) P(8) =30866

Use formula:

\( P(t) = P. e^{rt} \)

a)

Here, P = 19100

r = 6% = 0.06

\( P(t) = 19100. e^{0.06t} \)

b) t = 2008 - 2000 = 8

\( P(8) = 19100. e^{0.06\times 8} \)

\( P(8) = 19100. e^{0.48} \)

\( P(8) = 19100\times 1.616\\\\

P(8) = 30,865.6\\\\P(8) \approx 30,866\)

You initially invest 500 in a savings account that pays yearly interest rate of 3.5%. write a formula for an exponential function giving the balance in your account as a function of the time, in years, since your initial investment.

Answers

The formula for the exponential function giving the balance in your account as a function of time, in years, since your initial investment is B(t) = 500 * (1 + 0.035)^t.

where B(t) represents the balance in the account after t years.

In this scenario, the initial investment is $500, and the yearly interest rate is 3.5%. To determine the balance in the account after a certain number of years, we use the formula for compound interest.

The general formula for compound interest is given by B(t) = P * (1 + r)^t, where B(t) is the balance after t years, P is the principal (initial investment), r is the interest rate (expressed as a decimal), and t is the time in years.

In this case, the principal (initial investment) is $500, and the interest rate is 3.5% or 0.035 as a decimal.

Therefore, the formula for the balance in the account becomes B(t) = 500 * (1 + 0.035)^t.

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find a value of c> 1 so that the average value of f(x)=(9pi/x^2)cos(pi/x) on the interval [2, 20]

Answers

c = pi/2, and the value of c > 1 such that the average value of f(x) on the interval [2, 20] is equal to c is c = pi/2.

The average value of a function f(x) on the interval [a, b] is given by:

Avg = 1/(b-a) * ∫[a, b] f(x) dx

We want to find a value of c > 1 such that the average value of the function \(f(x) = (9pi/x^2)cos(pi/x)\) on the interval [2, 20] is equal to c.

First, we find the integral of f(x) on the interval [2, 20]:

\(∫[2, 20] (9pi/x^2)cos(pi/x) dx\)

We can use u-substitution with u = pi/x, which gives us:

-9pi * ∫[pi/20, pi/2] cos(u) du

Evaluating this integral gives us:

\(-9pi * sin(u) |_pi/20^pi/2 = 9pi\)

Therefore, the average value of f(x) on the interval [2, 20] is:

\(Avg = 1/(20-2) * ∫[2, 20] (9pi/x^2)cos(pi/x) dx\)

= 1/18 * 9pi

= pi/2

Now we set c = pi/2 and solve for x:

Avg = c

\(pi/2 = 1/(20-2) * ∫[2, 20] (9pi/x^2)cos(pi/x) dx\)

pi/2 = 1/18 * 9pi

pi/2 = pi/2

Therefore, c = pi/2, and the value of c > 1 such that the average value of f(x) on the interval [2, 20] is equal to c is c = pi/2.

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Solve: 2x+6y=42 3x+2y=70

Answers

Answer:

x-4y=28

Step-by-step explanation:

2x+6y=42

-3x-2y=-70 (both side multiple -1 )

The answer is   x-4y=28 or -x+4y=-28

HELP 7TH GRADE I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

HELP 7TH GRADE I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

8

Step-by-step explanation:

I believe that is correct

A group of children 6 to 10 years old were asked how many video games they owned. The scatter plot shows the results. What is the range of the number of video games owned for the cluster? 2 to 10 6 to 9 6 to 10 8 to 10.

Answers

The range of the video games owned for the cluster is between 8 to 10.

Given

A group of children 6 to 10 years old were asked how many video games they owned.

The scatter plot shows the results.

What is the range?

The range is the difference between the lowest and highest numbers in a data set.

The range of video games owned for the cluster is 8 to 10.

Therefore,

The range of the video games owned for the cluster is;

\(\rm Range = Highest \ value - lowest \ value\\\\Range=10-8\\\\Range=2\)

Hence, the range of the video games owned for the cluster is between 8 to 10.

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A group of children 6 to 10 years old were asked how many video games they owned. The scatter plot shows

91) __________ involves the analysis of accumulated data and involves a __________. a) OLAP, database b) OLAP, data warehouse c) OLTP, database d) OLTP, data warehouse

Answers

OLAP is used for the analysis of accumulated data, and it requires a data warehouse.

while OLTP is used for transaction processing and requires a database optimized for real-time transaction processing. The analysis of accumulated data is known as Online Analytical Processing (OLAP), and it involves a data warehouse. OLAP is a business intelligence tool used for multi-dimensional analysis of large data sets, while a data warehouse is a central repository that stores historical and current data from multiple sources in a structured manner. OLAP allows users to perform complex queries on large data sets, analyze trends, and make informed business decisions. It is often used in data mining and decision support systems. OLAP tools can be used to slice and dice data, drill down to more detailed data, and roll up to higher levels of summary data. OLAP is primarily used for analytical purposes and is not designed for transaction processing. On the other hand, a data warehouse is designed to support OLAP and is used for storing large amounts of historical data that can be queried and analyzed. Data is extracted from various sources, transformed, and loaded into the data warehouse in a structured format, enabling efficient querying and analysis. OLTP (Online Transaction Processing), on the other hand, is a type of transaction processing that is designed for processing real-time transactions in databases. It is used for day-to-day operations such as order processing, inventory management, and customer management. OLTP is optimized for processing large volumes of transactions in real-time, and is not suitable for analytical purposes.

In summary, OLAP is used for the analysis of accumulated data, and it requires a data warehouse, while OLTP is used for transaction processing and requires a database optimized for real-time transaction processing.

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.

Is 60 a rational number

Answers

Answer:

I think yes I. not sure I am pretty tired

The number 60 is real and is a rational number since it can be written in the form \(\dfrac{p}{q}\).

Given the number 60.

It is required to find whether the number 60 is rational or not.

Rational numbers can be defined as numbers that can be written in the form of fractions, that is \(\dfrac{p}{q}\), where p and q must be integers.

If a number is not rational, then it is an irrational number.

Here, the number is 60.

60 can be written in the form \(\frac{60}{1}\), \(\frac{120}{2}\), \(\frac{180}{3}\), ...

That is 60 can be written as the fraction of the integers.

Hence, the number 60 is a rational number.

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What is the weight of a 41.41-carat diamond in grams and ounces? ( 1 carat =0.2{~g} ) Click the icon to view the USCS measurements. The weight of the diamond is grams. (Round to the near

Answers

The weight of the diamond in ounces is approximately 0.292 ounces.

The given diamond weighs 41.41 carats, and since 1 carat is equal to 0.2 grams, we can multiply the carat weight by 0.2 to convert it to grams.

A 41.41-carat diamond weighs approximately 8.282 grams. In terms of ounces, the weight of the diamond is approximately 0.292 ounces. Carat is a unit used to measure the weight of gemstones, where 1 carat is equivalent to 0.2 grams. To convert carats to grams, we simply multiply the number of carats by 0.2. Similarly, to convert grams to ounces, we divide the weight in grams by 28.35, as there are 28.35 grams in an ounce. Therefore, a 41.41-carat diamond weighs approximately 8.282 grams or 0.292 ounces.

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The data shows the total number of employee medical leave days taken for on the job accidents in the first six months of the year 14, 6, 18, 10,22, 14. Find the mean number of days taken for medical leave each month.The mean number of days taken for medical leave each month is

Answers

ANSWER

14 days

EXPLANATION

The mean of a data set is the sum of all data, divided by the number of data,

\(\bar{x}=\frac{1}{n}\sum_{i\mathop{=}1}^nx_i\)

In this case, the number of data is 6, so the mean is,

\(\bar{x}=\frac{14+6+18+10+22+14}{6}=\frac{84}{6}=14\)

Hence, the mean number of days taken for medical leave each month is 14.

Help me!!! Please to solve this problem of o. Math

a) Given a function f(x) = 2x + 3. Find (a) f(1), (b) f(-5), (c) f(a), (d) f(a + 2) (e) f(b)?

b) let f(x) = x + 4 define a function in the closed interval of -55x55, find f(-2), f(3) and f(7). ​

Answers

a:-

f(x)=2x+3

\(\\ \rm\Rrightarrow f(1)=2(1)+3=2+3=5\)

\(\\ \rm\Rrightarrow f(-5)=2(-5)+3=-10+3=-7\)

\(\\ \rm\Rrightarrow f(a)=2a+3\)

\(\\ \rm\Rrightarrow f(a+2)=2(a+2)+3=2a+4+3=2a+7\)

\(\\ \rm\Rrightarrow f(b)=2b+3\)

b:-

f(x)=x+4

\(\\ \rm\Rrightarrow f(-2)=(-2)+4=2\)

\(\\ \rm\Rrightarrow f(3)=3+4=7\)

\(\\ \rm\Rrightarrow f(7)=7+4=11\)

Step-by-step explanation:

\(thank \: you\)

 Help me!!! Please to solve this problem of o. Matha) Given a function f(x) = 2x + 3. Find (a) f(1),

plz help me with this as soon as possibal

plz help me with this as soon as possibal

Answers

Answer:

plot between 1/3 and 2/3 or 1/2.

plz answer very urgent​

plz answer very urgent

Answers

Answer:1.06

Solution,

9x/7-6x=15

or,9x=15(7-6x)[ cross multiplication]

or,9x=105-90x

or,9x+90x=105

or,99x=105

or,X=105/9

X=1.06

Hope it helps

Good luck on your assignment

Help on this pls due tmrw

Help on this pls due tmrw

Answers

5. The value of x in the figure is

C. 6√7

7. Length of arc AD is 125 degrees

8. Angle ROT is 36.87 degrees

How to find the length of chord x

The length of chord x is solved using Pythagoras theorem as follows

5.

let x/2 = y then we have

y² = 12² - 9 ² = 144 - 81 = 63

y = √63 = 3√7

and x/2 = y = 3√7. so x = 6√7

7. BD is the diameter hence arc BAD = 180 degrees

if arc ABC is 110 then arc BA = 110 /2 = 55

Arc AD = arc BAD - arc BA

Arc AD = 180 - 55

Arc AD = 125 degrees

8. Angle ROT = arc sin (3/5)

Angle ROT = 36.87 degrees

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-5x+7y=-34
-5x+3y=-6

Answers

Answer:

        x = -3,  y = -7

Step-by-step explanation:

-5x + 7y = -34     ⇒  -5x = -34  - 7y

    -5x + 3y = -6

-34  - 7y + 3y = -6

-34 - 4y = -6          {add 34 to both sides}

  -4y = 28             {divide both sides by (-4)}

     y = - 7

-5x + 3y = -6

-5x + 3(-7) = -6

-5x - 21 = -6        {add 21 to both sides}

-5x = 15            {divide both sides by (-5)}

  x = -3

what is the mathematical sentence of "the length of wooden frame is 1foot longer than it's width and it's area is equal to 12ft²" can you translate it into quadratic equation in terms of "x"?

Answers

Answer:

x²+x+12 = 0

Step-by-step explanation:

Area if the wooden frame = ,Length ×Width

A = LW

If the length of wooden frame is 1foot longer than it's width, then;

L = W+1

Given

A = 12ft²

Substitute the derived and given parameters into the formula to have;

P = (W+1)W

12 = (W+1)W

Open the parentheses

12 = W²+W

Subtract 12 from both sides

12-12 = W²+W -12

0 = W²+W-12

Rearrange

W²+W-12 = 0

If W = x

The quadratic equation becomes:

x²+x+12 = 0

In how many ways can five models line up to have their
photograph taken?
F. 120 G. 60 H. 25 I. 20

Answers

Answer:

120

Step-by-step explanation:

by using the basic counting rule, there are 5 positions first, then 4, then ,3 and so on down to one. so when you multiply them all together, you get 120. Also i took  a test with the same qeustion, and that was the anwer :)

Answer:

120

Step-by-step explanation:

5 times 4 times 3 times 2 times 1= 120

5 choices for first

1 choice already taken so 4 for the other model

3 for the other

2 for the other

and 1 for the other

=120

Its correct, trust me!

Z is the standard normal random variable. what is the probability that a z is between -1.65 and 1.82?

Answers

The probability that a standard normal random variable, Z, is between -1.65 and 1.82 can be found by subtracting the cumulative probability at -1.65 from the cumulative probability at 1.82.

To find the cumulative probability, you can use a standard normal distribution table or a calculator. The cumulative probability at -1.65 is 0.0495, and the cumulative probability at 1.82 is 0.9656.

So, the probability that Z is between -1.65 and 1.82 is 0.9656 - 0.0495 = 0.9161.

In other words, the probability of Z being between -1.65 and 1.82 is approximately 0.9161.

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Which side in WXYZ corresponds to OP in MNOP
A. XW
B. XY
C. YZ
D. MN

Which side in WXYZ corresponds to OP in MNOPA. XWB. XYC. YZD. MN

Answers

Answer:

Y and Z because just move the shape side ways and u can find the corresponding side.

ASAP!!!!!!!!! PLEASE help me with this question! This is really urgent! No nonsense answers please.

ASAP!!!!!!!!! PLEASE help me with this question! This is really urgent! No nonsense answers please.

Answers

Answer: C) 63

=================================================

Explanation:

Arcs CBH and FGH are given, while arc CDF is unknown. Let's call this y

y = measure of arc CDF

Adding the three arcs forms a full circle of 360 degrees

(arc CBH)+(arc FGH)+(arc CDF) = 360

170+64+y = 360

y+234 = 360

y = 360-234

y = 126

arc CDF = 126 degrees

Then notice how inscribed angle x cuts off arc CDF. By the inscribed angle theorem, we take half of the arc measure to get the inscribed angle measure.

inscribed angle = (arc measure)/2

x = (arc CDF)/2

x = 126/2

x = 63

Answer:

rewrite the fromula 126

Step-by-step explanation:

n an informal survey of students, 20 have dogs, 15 have cats, and five have both. one has only pet squirrel. how many people have only a pet cat

Answers

Answer:

10 people have just cats

Step-by-step explanation:

since 15 people have cats, but 5 people have both cats and dogs, you would do 15 (people who have cats) minus 5 (people who have dogs in addition to cats) gives u 10

For the triangle shown below, complete the following table

For the triangle shown below, complete the following table

Answers

Sin A = 3/5
Sin C = 4/5
Cos A = 4/5
Cos C = 3/5

10 = 18+ 4(3x+7)
please help with the answer

Answers

Answer:-3

Step-by-step explanation:

Subtract 18 on both sides and rewrite the equation:

-8 = 4(3x+7)


Solve within parentheses:

4(3x+7)

4 x 3x = 12x

4 x 7 = 28

Rewrite the equation:

-8 = 12x + 28

Subtract 28 on both sides and rewrite the equation:

-36 = 12x

In order to determine the value of x, we’ll need to isolate the variable.

To do this, divide both sides by 12 and rewrite the equation (the value of x):

12 cancels out, similar to how 18 and 28 cancelled out earlier.

-36 divided by 12 equals -3,

So, the answer is:

x = -3

You can check your answer by substituting -3 for d in the original equation from the very beginning.

I hope this helps! :)

ASAP PLEASE HELP
I WILL GIVE BRIANLEST
PLS ILL PAYPAL U MONEY


Select all true statements .

A. Trig functions will never be alone and will always has an angle measure associated with it .
B. Trig functions can be written alone as long as there a ratio of two sides associated with it.
C. The only proper way to write (trig function ) equal to the ratio of two sides)
D. The only proper way to write ( function) of an ( angle) is equal to the (of two sides) E.correctly written cos x = 3/4
F. correctly written: sin=3/4

Answers

A and C i believe that’s correct

Who’s right? And why?

Whos right? And why?

Answers

\(\bold{\boxed{\huge{\blue{\underline{Answer }}}}}\)

Sterling is right that formazing deal is better because at formazing, frozen yogurt costs $0.50 per ounce

\(\bold{\underline{ Whereas }}\)

At frotastic,

Cost for per ounce from the given table :-

\(\sf{5/ 2.40 = 2.08 }\)

Thus, The cost at Frotastic is $2.08

\(\sf{\red{\bold{Conclusion :-}}}\)

\(\bold {\pink{Sterling \: is \: right }}\)

Write a sine function that has a midline of 3, an amplitude of 5 and a period of 2.

Answers

Answer: y= 5 sin πx + 3

π means pi

there are more than 7 shades of skin color. can you offer an explanation?

Answers

First and foremost, it is important to note that human skin color is determined by a variety of factors, including genetics, environmental influences, and geographic location. In fact, skin color is the result of the amount and type of melanin pigment produced by specialized cells in the skin called melanocytes.

There are two main types of melanin pigment: eumelanin and pheomelanin. Eumelanin is responsible for producing darker skin colors, while pheomelanin produces lighter skin colors. However, the amount and distribution of these pigments can vary greatly between individuals, resulting in a wide range of skin tones.

Additionally, skin color can also be influenced by factors such as sun exposure, age, and hormonal changes. For example, prolonged sun exposure can lead to darker skin, while aging and hormonal changes can cause changes in skin pigmentation. Furthermore, it is important to note that skin color is not always clearly defined or easily categorized into specific shades. There can be a great deal of variation within a single skin tone, as well as overlap between different skin tones. This is due to the complex interplay of genetic and environmental factors that contribute to skin color.

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Can you explain the properties and how to use them?

Answers

You have the following expression:

(a + 2b)/ 5

In order to evaluate the previous expression for a = 1 and b = 2, you proceed as follow:

(a + 2b)/ 5 = ( 1 + 2(2) )/5

= ( 1 + 4 )/5

= (5)/5

= 1

Hence, the answer is 1.

The square root of which of the following integers is between 7 and 8 ?

Answers

훂나ㅓ녀ㅑ뉴랴ㅗㅠ더톃ㅁ펴ㅕㅕ유ㅠㅠ여ㅗㅇㅍㄴㅍ넌

Solve the following equations: 2(3x–1)=9(x–2)–7

Answers

Answer:

23/3 or 7 2/3

Step-by-step explanation:

Answer:

23/3

Step-by-step explanation:

So we have the equation:

\(2(3x-1)=9(x-2)-7\)

First, distribute the left:

\(6x-2=9(x-2)-7\)

Now, distribute the right:

\(6x-2=9x-18-7\)

Subtract on the right:

\(6x-2=9x-25\)

Subtract 9x from both sides:

\(-3x-2=-25\)

Add 2 to both sides:

\(-3x=-23\)

Divide both sides by 3:

\(x=23/3\approx7.67\)

And we're done!

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