Jessica sold half of her comic books and then bought 9 more. She now has 13. How many did she begin with?
Step 1: Define your variable(s)
Step 2: Write an equation.
Step 3: Solve your equation.Step 5: Write a summary statement explaining your solution in the context of the problem..
Step 4: Check your solution.
Step 5: Write a summary statement explaining your solution in the context of the problem..
please helpp me .

Answer:

Er I think it’s 8 but not sure

Step-by-step explanation:

Answer: google will help

Step-by-step explanation:

Answer:

( 0, -4)

Step-by-step explanation:

The y-intercept in a linear function will always have 0 as the x-coordinate.

Answer:

R=(4,5)

Step-by-step explanation:

M={x1+x2/2,y1+y2/2}

(6,7)={8+x2/2,9+y2/2}

Equating the x coordinates and y coordinates

6=8+x2/2

12=8+x2

x2=12-8=4

7=9+y2/2

14=9+y2

y2=14-9=5

A) The best point estimate of the population P is 0.5399

B) The value of margin of error E.≈ 0.0267 (Round to four decimal places as needed)

C) A confidence interval is 0.5132 < p < 0.5666

A) The best point estimate of the population proportion (P) is calculated by dividing the number of respondents who said "yes" (x) by the total number of respondents (n).

In this case,

P = x/n = 557/1032 = 0.5399 (rounded to four decimal places).

B) The margin of error (E) is calculated using the formula: E = z * sqrt(P*(1-P)/n), where z represents the z-score associated with the desired confidence level. For a 99% confidence level, the z-score is approximately 2.576.

Plugging in the values,

E = 2.576 * sqrt(0.5399*(1-0.5399)/1032)

≈ 0.0267 (rounded to four decimal places).

C) To construct a confidence interval, we add and subtract the margin of error (E) from the point estimate (P). Thus, the 99% confidence interval is approximately 0.5399 - 0.0267 < p < 0.5399 + 0.0267. Simplifying, the confidence interval is 0.5132 < p < 0.5666 (rounded to four decimal places).

In summary, the best point estimate of the population proportion is 0.5399, the margin of error is approximately 0.0267, and the 99% confidence interval is 0.5132 < p < 0.5666.

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Answer:

8 is the mean mark for the girls

The values of a, R and T are:

i. a = 6

ii. R = 106^o

iii. T = 74^o

A transversal implies a straight line which passes through two or more parallel lines, thus producing a set of angles. These angles are referred to as angles formed by a transversal. Some of the angles formed have similar properties.

Considering the question, to find the values of a, R and T we have;

(5x - 19) + (3x - 1) = 180^o

8x - 20 = 180

8x = 200

x = 200/ 8

  = 25

x = 25^o

Thus we can deduce that;

i. R = (5x - 19)     (vertical opposite angle theorem)

     = 5(25) - 19

     = 125 - 19

     = 106

R = 106^o

ii. T = (3x - 1)        (vertical opposite angle theorem)

      = 3(25) - 1

      = 75 - 1

      = 74

T = 74^o

iii. Since the lines cut by the transversal are parallel, then;

a = 6

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The equation for the transformed logarithm that passes through the points (3,0) and (0,2) can be written as f(x) = -b * log(base a)(x - h) + k, where a, b, h, and k are constants to be determined.

To find the equation for the transformed logarithm, we need to use the given points (3,0) and (0,2) to determine the values of a, b, h, and k. Let's start with the point (3,0). Plugging the x-coordinate (3) into the equation, we have:

0 = -b * log(base a)(3 - h) + k

Next, we'll use the point (0,2) to obtain another equation. Plugging the x-coordinate (0) into the equation, we get:

2 = -b * log(base a)(0 - h) + k

Simplifying these equations, we have a system of equations to solve for a, b, h, and k. However, since the equation involves a logarithm, we need more information to determine the specific values of a, b, h, and k.The transformed logarithm function includes transformations such as vertical stretches/compressions (b), horizontal shifts (h), and vertical shifts (k). Without more specific information about these transformations or the base of the logarithm, it is not possible to determine the equation uniquely.

In general, the equation for a transformed logarithm can be written as f(x) = -b * log(base a)(x - h) + k, where a, b, h, and k are constants determined by the specific transformations applied to the logarithm function. It's important to have additional information or instructions to determine the values of a, b, h, and k and provide an equation that accurately represents the given transformed logarithm.

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Explanation:

If there are n = 6 items in the set, then there are 2^n = 2^6 = 64 subsets

This is because there are 2 choices per slot. Either the item is in the subset or not. Since we have 6 slots, and 2 choices per slot, we have (2*2*2)*(2*2*2) = 2^6 = 64 different combos.

Side note: The empty set is included as one of the subsets. Also, the original set itself is a subset.

Answer:

64

Step-by-step explanation:

For a set with  n  elements, there are  2n  subsets.

In this case, # of subsets  =26=64  

∅,  

{1},{2},{3},{4},{5},{6},  

{1,2},{1,3},{1,4},{1,5},{1,6},{2,3},{2,4},{2,5},{2,6},{3,4},{3,5},{3,6},{4,5},{4,6},{5,6},  

{1,2,3},{1,2,4},{1,2,5},{1,2,6},{1,3,4},{1,3,5},{1,3,6},{1,4,5},{1,4,6},{1,5,6},{2,3,4},{2,3,5},{2,3,6},{2,4,5},{2,4,6},{2,5,6},{3,4,5},{2,4,6},{3,5,6},{4,5,6},  

{1,2,3,4},{1,2,3,5},{1,2,3,6},{1,2,4,5},{1,2,4,6},{1,2,5,6},{1,3,4,5},{1,3,4,6},{1,3,5,6},{1,4,5,6},{2,3,4,5},{2,3,4,6},{2,3,5,6},{2,4,5,6},{3,4,5,6},  

{1,2,3,4,5},{1,2,3,4,6},{1,2,3,5,6},{1,2,4,5,6},{1,3,4,5,6},{2,3,4,5,6},  

{1,2,3,4,5,6}

The connection string for SQL Server using Windows Authentication is as follows:

Server=myServerAddress;Database=myDataBase;Trusted_Connection=True;

Specify the server address in the format "Server=myServerAddress". Replace "myServerAddress" with the name or IP address of the SQL Server instance you want to connect to.

Specify the name of the database you want to connect to in the format "Database=myDataBase". Replace "myDataBase" with the name of the database.

Use Windows Authentication by setting "Trusted_Connection=True". This means that the user running the application is authenticated using their Windows credentials, rather than a SQL Server login.

Use semicolons (;) to separate the different parts of the connection string.

Using Windows Authentication is a more secure and convenient way to connect to a SQL Server database, as it eliminates the need to store and manage login credentials in the application.

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Since the scale factor is smaller than one (the original), the resulting image is smaller than the original.

Hope this helped, and feel free to ask more questions if needed(:

Answer:

I am not sure if this answers the questions but what about 1/2=1

Step-by-step explanation:

Answer:

3 7/12

Step-by-step explanation:

Answer:

is 3 7/12 that last one D

Step-by-step explanation:

if you take and do 1/6 - 3/4 you get 0.58 and when you convert 7/12 to a decimal you get 0.58 so 18-15 is 3 and then your fraction is 7/12 with you answer being D.3 7/12

Answer:

h = (2A)/b

Step-by-step explanation:

Analysis of variance (One-Way ANOVA) test should dr. Symon uses to examine the effects of the drug.

Randomly assign his rats into 4 groups G1, G2, G3 and G4.

G1 = No amphetamine

G2 = 0.5 mg/kg

G3 = 1.0 mg/kg

G4 = 2 mg/kg.

what initial statistical test should dr. symon use to examine the effects of the drug?

In order to ascertain whether there is statistical support that the associated population means are statistically significantly different, one-way ANOVA ("analysis of variance") compares the means of two or more independent groups. A parametric test is one-Way ANOVA.

Another name for this test is:

ANOVA with one factor

ANOVA with a single-way analysis of variance between subjects

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Answer:

x + 2y = -8

Step-by-step explanation:

In the standard form you want the x and the y on one side of the equation. So, lets add 1/2x to both sides. We then get 1/2x + y = -4. However, we want the x coefficient to be an integer. So, lets multiply the entire equation by 2, and we get x + 2y = -8, and that is our answer.

Emily claims that a tree height of 43 inches is an outlier for the distribution.

What is the 1.5 IQR rule for outliers?

Add 1.5 to the interquartile range (IQR) (a constant used to discern outliers). The third quartile is increased by 1.5 times (IQR). Any figure above this is thought to be an outlier.

The starting and the end of the box in box plot are first and third quartile respectively.

From the given box plot it is clear that, Q₁ = 34  and Q₃ = 38

IQR = Q₃ -  Q₁

IQR = 38 - 34

IQR = 4

According to 1.5x IQR rule for outliers, all the data values lies outside the interval [ Q₁  - 1.5 × IQR , Q₃ + 1.5 × IQR ] are outliers..

Q₃ + 1.5 × IQR = 38 + 1.5(4)

Q₃ + 1.5 × IQR = 38 + 6

Q₃ + 1.5 × IQR = 44

We know that, 43<44.

Since, 43 is not greater than Q₃ + 1.5 × IQR  therefore, 43 is not an outlier and there is no evidence to support the claim.

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Answer:

(x + 7)(x - 4) = x2 - 4x + 7x - 28 = x2 + 3x - 28

The number of communication channels, 10 channels would five people require.

To find number of communication channels, we use;

On the other hand, it might be a sign of the scope and intensity of the project communication management needed in huge projects and so-called megaprojects. This could, for example, entail allocating specific resources to project communication responsibilities in accordance to the number of available channels for communication. These factors may be especially important for teams working on sensitive projects and projects where information flow may be unclear or even fraudulent.

Number of potential communication channels = n x (n-1)/2

Given n = 5;

→ x = 5*(5 - 1)/2

     = 5*2

     = 10

The number of communication channels, 10 channels would five people require.

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The composite function is \(f\circ g(x) = x^8+x^6+x^4\)

Given that \(f(x)=x^4+x^3+x^2\) and \(g(x)=x^2\).

We need to calculate \(f\circ g(x)\) which is a composite function.

If two functions are given and we create another function by using the given functions, then the new function is called composite function.

So to calculate the composite function, put the value of \(g(x) = x^2\) in the function \(f(x)\).

\(f\circ g(x) = (x^2)^4+(x^2)^3+(x^2)^2\)

\(f\circ g(x) = x^8+x^6+x^4\)

Hence the composite function is \(f\circ g(x) = x^8+x^6+x^4\).

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They will charge the same amount at 4

Hi student, let me help you out! :)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

We are asked to find the G.C.F. of 8x-6.

\(\triangle~\fbox{\bf{KEY:}}\)

So what is the G.C.F. of 8x-6? We can list all of their common factors and then select the greatest one, like so:

\(\longmapsto\bf{Factors\;of\;8x:}\) 1, 2, 4, 8, x

\(\longmapsto\bf{Factors\;of\;-6:}\) -1, 1, 2, -3, 3, -6, 6

So the GCF is:

2

Now, we can also factor it out by placing it outside the parentheses ():

2(4x-3)

See, we factored it out by dividing both terms of the expression by the G.C.F.

\(\ddot\bigstar\) Remember this...

\(\fbox{\bf{We\;factor\;out\;the\;G.C.F.\;by\;dividing\;all\;the\;terms\;of\;the\;expression\;by\;it}}\)

Hope this helps you out! :D

Ask in comments if any queries arise.

~Just a smiley person helping fellow students :)

Answer: 2, you have to use math apps man it will save your life

Answer:

Have a great day!

Step-by-step explanation:

1 dollar per game for 3 games would cost 3 dollars.

20 subtracted by 3 is 17.

17 divided by 4 is 4.

The number of shoes they can rent is 4.

Hope this Helps!

Therefore, tan θ = -2√3 in quadrant II.

In quadrant II, the cosine is negative and the tangent is positive. We are given that cos θ = -1/2, so let's use the Pythagorean identity to find the value of sin θ:

cos^2 θ + sin^2 θ = 1

(-1/2)^2 + sin^2 θ = 1

1/4 + sin^2 θ = 1

sin^2 θ = 1 - 1/4

sin^2 θ = 3/4

Taking the square root of both sides, we get:

sin θ = ±√(3/4)

Since we are in quadrant II and the tangent is positive, we can determine that sin θ is positive. Therefore, sin θ = √(3/4).

Now, let's use the tangent identity to find the value of tan θ:

tan θ = sin θ / cos θ

tan θ = (√(3/4)) / (-1/2)

tan θ = (√3 * 2) / (-1)

tan θ = -2√3

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Answer:

2 4/7

Step-by-step explanation:

1 2/7 : 1/2

=18/7

=2 4/7

Answer:

see below

Step-by-step explanation:

(w+14)/2 = 10

Multiply each side by 2

(w+14)/2  *2 = 10*2

w+14 = 20

Subtract 14 from each side

w+14-14 = 20-14

w = 6

Answer:

20

6

Step-by-step explanation:

(w + 14)/2 = 10

w + 14 = 2(10)

w + 14 = 20

w = 20 - 14

w = 6

Well your answer for problem 4 is 28. IM not sure what the boxes are for though...

Answer:

42

Step-by-step explanation:

Answer:

Ik it

Step-by-step explanation:

The probability that a voter is either female or Democrat is 0.64 or 64%.

To calculate the probability, we need to determine the number of individuals who are either female or Democrat and divide it by the total number of voters.

From the table, we can see that there are 405 females and 253 Democrats. However, we need to be careful not to double-count the individuals who fall into both categories.

To find the number of individuals who are either female or Democrat, we add the number of females (405) and the number of Democrats (253), and then subtract the number of individuals who are both female and Democrat (150).

So, the number of individuals who are either female or Democrat is 405 + 253 - 150 = 508.

Now, we divide this number by the total number of voters, which is 802, to get the probability: 508 / 802 ≈ 0.64 or 64%.

Therefore, the probability that a voter is either female or Democrat is approximately 0.64 or 64%.

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Answer:

bom é a soma dos algarismos se for matemática