23 --there are four types of cards in a game.
each card has a black circle or a white circle or a black triangle or a white triangle
number of cards
with a black shape
number of cards
with a white shape
number of cards
with a circle
number of cards
with a triangle
2:7
express the total number of cards with a black shape as a fraction of the total number of
cards with a triangle

Answer:

no sign (not positive or negative)

Step-by-step explanation:

The value of the expression

4.3 ⋅ (-3.2) ⋅ 0

is 0, as the value of any number multiplied by zero is 0.

The number zero is neither positive or negative; hence there is no sign.

Answer:

it literally says +10

Step-by-step explanation:

scammer

Answer:

Step-by-step explanation:

6,7,8

Answer:

greg

Step-by-step explanation:

heffly is a sociopath. he shall burn in the gates of hell

His/her lowered score was most likely due to statistical regression.

The missing options in the question are:

A. compensation rivalry  B. Demoralization C.  Differential selection

D.  Testing E.  Statistical regression

From the question, we have:

A change (whether higher or lower) in the score is caused by statistical regression.

This is so because several variables could attribute to the change in the score.

The relationship between these variables is referred to as statistical regression

Read more about statistical regression at:

https://brainly.com/question/25987747

#SPJ12

Using proportional relationships, we can say that They will walk 12 laps and run 20 laps for a total of 32 miles.

In a direct proportional relationship, the output variable is found by the multiplication of the input variable and the constant of proportionality k, as follows:

y = kx.

Given that we know this, they walk 3/8 of the 8 miles that make up the complete distance. Run 5/8 of the route.

The following are the proportional relationships for the distances:

For a total distance of 32 miles, the distances walked and run are given:

therefore, They will walk 12 laps and run 20 laps for a total of 32 miles as per the proportional relation.

Learn more about proportional relationships here: brainly.com/question/10424180

#SPJ1

The average rate of change of demand to change in price is -21 boxes. the instantaneous rate of change of demand when the price is $3 is -18 boxes per dollar and  the instantaneous rate of change of demand when the price is $4 is -24 boxes per dollar.

a. To find the average rate of change of demand for a change in price from $3 to $4, we need to calculate the change in demand and divide by the change in price:

Change in demand = N(4) - N(3) = (90 - 3(4)^2) - (90 - 3(3)^2) = 42 - 63 = -21

Change in price = 4 - 3 = 1

Average rate of change of demand = Change in demand / Change in price = -21/1 = -21

Therefore, the average rate of change of demand for a change in price from $3 to $4 is -21 boxes per dollar.

b. To find the instantaneous rate of change of demand when the price is $3, we need to find the derivative of the demand function N(p) with respect to p and evaluate it at p=3:

N'(p) = -6p

N'(3) = -6(3) = -18

Therefore, the instantaneous rate of change of demand when the price is $3 is -18 boxes per dollar.

c. To find the instantaneous rate of change of demand when the price is $4, we need to evaluate the derivative of the demand function N(p) at p=4:

N'(p) = -6p

N'(4) = -6(4) = -24

Therefore, the instantaneous rate of change of demand when the price is $4 is -24 boxes per dollar.

Learn more on average rate of change here;

https://brainly.com/question/8728504

#SPJ1

Statements are False: 1. interchanging rows changes determinant. 2. determinant zero not implies specific rows. 3. determinant not product of diagonal entries. 4. determinant is scalar not matrix.

What is matrix ?

A matrix is a rectangular array of numbers or other mathematical objects, typically arranged in rows and columns. Matrices are often denoted using capital letters, such as A, B, and C. Each element of a matrix is identified by its row and column indices,

1) False, If two row interchanges are made in succession, the determinant of the new matrix is the negative of the determinant of the original matrix.

2) False, If the determinant of a matrix is zero, it does not necessarily mean that two rows or two columns are the same or a row or column is zero, it only means that the matrix is singular, i.e. non-invertible and it also can mean that the matrix is linearly dependent.

3) False, The determinant of a matrix is not always equal to the product of the diagonal entries, it is a scalar value calculated through a specific method called matrix expansion which is based on the entries of the matrix and it depends on the size of the matrix.

4) False, The determinant of a matrix is a scalar value, it cannot be equal to another matrix.

Statements are False: 1. interchanging rows changes determinant. 2. determinant zero not implies specific rows. 3. determinant not product of diagonal entries. 4. determinant is scalar not matrix.

To learn more about matrix visit : brainly.com/question/29132693

#SPJ4

Answer: 185.7 miles

Step-by-step explanation:

To find the total distance, add the smaller distances together.

47.8 + 72 + 65.9 = 185.7

Answer:

35 im mot sure

Step-by-step explanation:

Answer: x > 11/8

Step-by-step explanation: Here is why

4 − (x+2) − 7x < −9 (simplify)

-8x + 2 - 2 < -9 -2 ( subtract)

-8x < -11

-8x/-8 < -11/-8 (divide)

= x > 11/8

Answer:

0<r<4

Step-by-step explanation:

-8<8-4r<8

Subtract 8 from each side

-8-8<8-4r-8<8-8

-16<-4r<0

Divide by -4, remembering to flip the inequality

-16/-4>-4r/-4>0/-4

4>r>0

Rewriting

0<r<4

hope it helps you

I am trying to help you

Cut off cut off from 11m

2 3/5 +3 3/10

13/5 +33/10

(26+33)/10

59/10 m

Length of remaining= 11-59/10

(110 -59)/10

51/10

5 1/10 m ans.

Answer:

y = 250

Step 1:

To solve, we plug in 50x for y.

\(50x=200+10x\)

Then, we subtract the 10x from the right side. Our goal is to get the x by itself first.

\(40x=200\)

Then, we divide both sides by 40, since we have to get the x by itself.

\(\frac{40x}{40}=x\\\\\frac{200}{40} =5\)

x = 5

Step 2:

Now that we found x, we plug in 5 to the original equation and solve from there.

\(y=200+10(5)\\y=200+50\\y=250\)

y = 250

The weaker inequality 1/2 · 3/4 ··· 2n-1/2n < 1/√(3n) holds for all positive integers n, but using mathematical induction, the basis step works, although the inductive step fails.

a) If we try to prove the inequality 1/2 · 3/4 ··· 2n-1/2n < 1/√(3n) using mathematical induction, we can see that the basis step works. When n = 1, we have 1/2 < 1/√3, which is true.

Now, let's consider the inductive step. Assuming that the inequality holds for some positive integer k, we need to show that it also holds for k+1, i.e., we assume 1/2 · 3/4 ··· 2k-1/2k < 1/√(3k) and we want to prove 1/2 · 3/4 ··· 2k-1/2k · (2k+1)/(2k+2) < 1/√(3k+3).

If we attempt to manipulate the expression, we can simplify it to (2k+1)/(2k+2) < 1/√(3k+3). However, we cannot proceed further to prove this inequality, as it is not necessarily true. Therefore, the inductive step fails, and we cannot establish the original inequality using mathematical induction.

b) However, mathematical induction can still be used to prove the stronger inequality 1/2 · 3/4 ··· 2n-1/2n < 1/√(3n+1) for all integers greater than 1. We can start by verifying the case where n = 1, which gives us 1/2 < 1/√4, which is true.

Now, assuming the inequality holds for some integer k, we can multiply both sides of the inequality by (2k+3)/(2k+2) to get:

(1/2 · 3/4 ··· 2k-1/2k) · (2k+3)/(2k+2) < 1/√(3k+1) · (2k+3)/(2k+2).

Simplifying the expression on both sides, we have:

(2k+3)/(2k+2) < 1/√(3k+1) · (2k+3)/(2k+2).

We can observe that the right side of the inequality is less than 1/√(3k+3) by multiplying the denominator of the right side by (2k+3)/(2k+3). Hence, we obtain:

(2k+3)/(2k+2) < 1/√(3k+3).

This establishes the inequality for k+1, and thus, we have proven the stronger inequality using mathematical induction.

By verifying the case where n = 1 separately, we can conclude that the weaker inequality 1/2 · 3/4 ··· 2n-1/2n < 1/√(3n) holds for all positive integers n, as it follows from the proven stronger inequality using mathematical induction.

Learn more about mathematical induction here:

https://brainly.com/question/29503103

#SPJ11

The given statement "a teacher awards t-shirts to those students who complete their goal of walking 50 miles during a semester " is the example for tangible reinforcers.

Tangibles serve as a visual reminder for employees to keep an eye out for desired behaviours and then provide specific positive feedback. . This aided you in completing your assignment quickly and correctly. "You have earned a Tiger Ticket because you followed directions," can improve the student-teacher relationship. You can give the student positive specific feedback without using a tangible (ticket, token, etc.), but a tangible must always be accompanied by positive specific feedback.

Hence, the given statement is an example of tangible reinforcers

To learn more reinforcers refer here

https://brainly.com/question/28587113

#SPJ4

The 95% confidence interval for a population mean has a margin of error (E) of 41

The confidence interval for a population mean is given by:

Confidence interval = μ ± E = (μ - E, μ + E)

Where μ is the mean and E is the margin of error.

Since the confidence interval is (428, 510), hence:

μ - E = 428      (1)

μ + E =  510     (2)

Subtracting equation 1 from equation 2:

2E = 82

E = 41

μ - E = 428

μ -41 = 428

μ = 469

Hence the margin of error (E) is 41

Find out more at: https://brainly.com/question/10501147

Approximately 3.3 inches of rainfall per year.

If central Pennsylvania received only one-third of the usual rainfall in a really dry year, it would be receiving 1/3 * the usual amount of rainfall per year.

In an average year,

     Pennsylvania gets about the same amount of rainfall as a desert, which is typically defined as an area that receives less than 10 inches of precipitation per year.

Therefore, if central Pennsylvania received only one-third of the usual amount of rainfall in a really dry year, it would be receiving,

   1/3 * 10 inches = approximately 3.3 inches of rainfall per year.

This amount of rainfall is significantly less than the average rainfall in Pennsylvania and would qualify as a desert if it persisted over a long period of time.

Hence, Approximately 3.3 inches of rainfall per year.

To know more about Average visit,

https://brainly.com/question/20118982

#SPJ4

We have that the distance of planet Mercury from the Sun is approximately:

and the distance of Earth from the Sun is:

Answer:

Terrell has 5 tickets left.

Step-by-step explanation:

Answer:

1/4xy(x^2+3y)

Step-by-step explanation:

oh ok last one was missing that y thx for reposting

The equation of the parabola with focus shown on the graph is given by:

y = -x²/12 + 1.

The equation of a vertical parabola of coordinates of vertex (h,k) is given according to the equation presented as follows:

(x - h)² = 4p(y - k).

The focus of a vertical parabola has the coordinates given as follows:

(h, k + p).

From the graph, the coordinates of the vertex of the parabola are given as follows:

(0,1).

Hence the parameters are:

h = 0, k = 1.

Then:

x² = 4p(y - 1)

The coordinates of the focus are given as follows:

(0,-2).

Hence the parameter p is calculated as follows:

k + p = -2

1 + p = -2

p = -3.

Then the equation is:

x² = -12(y - 1)

y - 1 = -x²/12

y = -x²/12 + 1.

The graph of the parabola is given by the image at the end of the answer.

More can be learned about the equation of a parabola at https://brainly.com/question/29210301

#SPJ1

If the relation r is irreflexive, it means that no element in the domain is related to itself under r. However, this does not necessarily mean that the relation r2 (which is the composition of r with itself) is also irreflexive.

In fact, it is possible for r2 to have some elements related to themselves. For example, consider the relation "less than" on the set of integers. This relation is irreflexive because no integer is less than itself. However, the relation r2 (which is the composition of "less than" with itself) includes some elements that are related to themselves, such as 1 and -1 (since 1 < 2 and -1 < -2). Therefore, r2 is not necessarily irreflexive if r is irreflexive.

To know more about integers click here

brainly.com/question/10930045

#SPJ11

Answer:

there is nothing to select. u need to provide more info

\(2(i+3)>4(1-i)\)

Distribute 2 in (i+3) and 4 in (1-i)

\(2i+6>4-4i\)

Move -4i to another side and 6 to another side. When moving to another side, you'll have to change the sign/operator to opposite (Plus -> Minus, Multiply -> Divide)

\(2i+4i>4-6\\6i>-2\\\)

For this part, move 6 to divide -2.

\(i>\frac{-2}{6} \\i>\frac{-1}{3}\\i>-\frac{1}{3}\)

Whenever either a numerator or a denominator is in negative, we can pull out the negative in the middle of fraction.

Note that i is the symbol of imaginary number - as defined -  i = √-1 But for this one, It's just a variable if I assume.

Thus, the answer is i > -1/3

Answer:

C

Step-by-step explanation:

Answer:

(b)

Step-by-step explanation:

The chi-square goodness-of-fit test can provide important information about whether the observed data significantly deviates from the expected distribution, which categories or bins contribute to the deviation, and the overall goodness-of-fit of the data to the expected distribution.

The chi-square goodness-of-fit test is a statistical test used to determine if a sample of data comes from a population with a specific distribution. Specifically, the test compares the observed frequencies of data in different categories or bins with the expected frequencies of data in those categories based on a hypothesized distribution.

It can determine whether the observed data significantly deviates from the expected distribution. If the test results in a p-value less than the chosen level of significance, it indicates that the observed data significantly deviates from the expected distribution, and the null hypothesis (that the data follows the expected distribution) can be rejected.

It can identify which categories or bins contribute the most to any significant deviation. The test statistic and associated p-value can help to identify which categories or bins show significant differences between the observed and expected frequencies.

It can provide information on the overall goodness-of-fit of the data to the expected distribution. The test statistic provides a measure of the overall goodness-of-fit, with higher values indicating greater deviation from the expected distribution.

To learn more about  Chi-square test :

https://brainly.com/question/14082240

#SPJ4

Answer:

2635*'fhhdgjvsvaksgwksygwi at gwjsksgeieh egg ejei