Which of the following has a solution set of [xl x = 0]?

O(x+1< -1) n (x +1< 1).

O(x+1=1) n (x + 1 = 1)

O (x +1<1) n (x + 1 > 1)

O

Using the .01 level of significance means that, in the long run, a Type I error occurs 1 time in 100. This means that if we perform a statistical test 100 times, and we set the level of significance at .01, then we can expect to observe one false positive result due to chance alone. So, the correct option is 1).

A Type I error occurs when we reject a true null hypothesis, or when we conclude that there is a significant difference or relationship between two variables when in fact there is not.

By setting the level of significance at .01, we are minimizing the risk of making a Type I error while increasing the risk of making a Type II error, which occurs when we fail to reject a false null hypothesis. So, the correct answer is 1).

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40 dollars

Step-by-step explanation:

Answer:

y = 8 + 4x

Step-by-step explanation:

y is the total cost of 1 skating experience.

y = 8 + 4x

This can be read as:  the total cost, y, is equal to the admission, $8, plus $4 times the number of hours the skates are rented.  No snacks included.

Answer: 2280 more

Step-by-step explanation:

We need to first find out how much Dani spends to make one treat bag:

1520/2 = 760

Now we can find out how much it would cost to make 5 more bags:

760 x 5 = 3800

Therefore, Dani would have to spend 3800 - 1520 = 2280 more to make 5 more similar bags.

Answer:

3/4 cups

Step-by-step explanation:

1/8 for 1/3 refipe

1/8 * 3 = 3/8

3/8 for 1 whole recipe

3/8 * 2 = 6/8 = 3/4

3/4 for 2 whole recipes

To compute a confidence interval for the two regression coefficients, we typically use the standard error of the estimate, the t-distribution, and the sample data.

First, we calculate the standard error of the estimate for each regression coefficient. This involves estimating the variability of the data around the regression line. The standard error is a measure of how much the estimated regression coefficient may vary from the true population value.

Using the standard error and the critical value, compute the margin of error as it represents the range within which we expect the true population regression coefficient to fall.

Finally, we construct the confidence interval by taking the estimated regression coefficient and adding/subtracting the margin of error. The resulting interval represents the range of likely values for the true population regression coefficient with the specified level of confidence.

It's important to note that the specific formulas and calculations involved may vary depending on the regression model and assumptions made, such as the normality of errors and independence of observations.

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The function P(x) = 2x³ - 13x² + 10x + 25 is given in factored form as (x + 1)(2x - 5)(x - 5). From the factored form, we can determine the x-intercepts of the graph, which occur when each factor equals zero.

Setting each factor equal to zero: x + 1 = 0 gives x = -1

2x - 5 = 0 gives x = 2.5 ,x - 5 = 0 gives x = 5

So the x-intercepts of the graph are at x = -1, x = 2.5, and x = 5.To determine the behavior of the graph as x approaches negative and ,positive infinity we look at the leading term, which is 2x³. Since the leading coefficient is positive, as x approaches negative infinity, the function P(x) will also approach negative infinity. Similarly, as x approaches positive infinity, P(x) will also approach positive infinity.

We can also identify the turning points of the graph by finding the critical points. We can take the derivative of P(x) to find the critical points. The derivative is P'(x) = 6x² - 26x + 10. Setting P'(x) equal to zero and solving for x, we find the critical points at x ≈ 0.76 and x ≈ 3.57.Based on this information, we can sketch a rough graph of the function P(x) by plotting the x-intercepts, indicating the behavior as x approaches infinity, and marking the turning points.Using a graphing calculator or software will provide a more accurate representation of the graph. You can input the function P(x) = 2x³ - 13x² + 10x + 25 into a graphing calculator or software to visualize the graph.

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Answer:

After 6 days Martha biked 330 miles, while Enrico biked 290 miles.

Step-by-step explanation:

i. Martha bikes 55 miles per day.

So that after 6 days, Martha would have covered;

55 miles x 6 = 330 miles

After 6 days, Martha would have biked 330 miles.

ii. Enrico bikes 145 miles every 3 days.

Then after 6 days, Enrico would have covered;

\(\frac{6 days}{3 days}\) x 145 miles

= 2 x 145 miles

= 290 miles

After 6 days, Enrico would have biked 290 miles.

After 6 days Martha biked 330 miles, while Enrico biked 290 miles.

The correct option is:

c. Action research

What type of research is conducted by professionals in any type of school to investigate a problem, with findings that may have limited generalizability?

The type of research conducted by professionals in any type of school to investigate a problem, with findings that may have limited generalizability, is known as action research.

c. Action research.

Action research is a type of research that is intended to be carried out by professionals in any type of school setting to investigate a specific problem or issue. The focus of action research is on practical solutions and making improvements within a particular context.

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Answer:

x = 26

Step-by-step explanation:

68=x +(16+x) and if you plug in 26 it is 68

Answer:

80.5 kilometers/h

Step-by-step explanation:

S=80.5km/h

D644

T8 hours

The average speed of the car during the trip given the gasoline used per kilometer is 80.50 km/h.

Average speed is the total distance travelled per time. It is used to determine the total distance per time.

Average speed = total distance / total time

644 / 8 = 80.50 km/h.

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Answer:

Step-by-step explanation: multiply the number of books Martina read 3 times.

Answer:

mutpliy the number of books martina read by 3

Step-by-step explanation:

\(7z + 5 = 9z - 3 \\ 5 + 3 = 9z - 7z \\ 8 = 2z \\ z = \frac{ \cancel{8}} {\cancel{2}} \frac{4}{1} \\ z = 4\)

Put the value z = 4

\(7z + 5 = 9z - 3 \\ 7(4) + 5 = 9(4) - 3 \\ 28 + 5 = 36 - 3 \\ 33 = 33\)

\(\therefore\) L.H.S = R.H.S

Answer:

\( \sf \: z = 4\)

Step-by-step explanation:

\( \sf7z + 5 = 9z - 3 \)

First, subtract 7z by both sides.

\( \sf5 = 9z - 3 - 7z\)

Combine like terms.

\( \sf5 = 2z - 3\)

Now, add 3 to both sides.

\( \sf5 + 3 = 2z \\ \sf8 = 2z\)

Now, divide both sides by 2.

\( \sf4 = z\)

Answer: 9/10

Step-by-step explanation:

Total cards are 20

Out of these, only 2 are red. So, the probability of the card not being red is 18/20 = 9/10

Answer:

Brainliest here! >:D

Step-by-step explanation:

the is a total of 20 cards

2 of them of red

so 18 of the 20 (18/20) is not red

so the probability theroticatily is 9/10 or 90%

The probability that the first card is an ace and the second card is a face card is 1.78% and 12/52 respectively.

What is the probability of cards?

Probability is measured by counting and using basic math, such as addition and division. For example, you can multiply the number of spades in a complete deck (13) by the total number of cards in the deck (52) to get the probability of drawing a spade at random: 13 in 52, or 25%.

If you are dealt two cards successively from a standard 52-card deck, find the probability of getting an ace card on the first card and a face on the second.

you want to draw an ace. There are 4 aces out of the 52 cards in the deck so the probability of drawing an ace = 4/52.

So, the combined probability \((\frac{12}{52}) . (\frac{4}{52}) = (\frac{3}{13}) . (\frac{1}{13}) = (\frac{3}{169})\)

= 1.78%.

The probability of a face card on the second draw = 12/52 because there are 12 face cards (J, Q, K x 4 of each) and 52 cards in the deck.

Hence, the probability that the first card is an ace and the second card is a face card is 1.78% and 12/52 respectively.

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The rightmost column of the augmented matrix is not a pivot column, the linear system represented by the augmented matrix is consistent. Therefore, the correct answer is A.Yes, because the rightmost column of the augmented matrix is not a pivot column.

we need to find an augmented matrix in reduced echelon form that represents a linear system of four equations in four variables for which the corresponding coefficient matrix has a pivot in each column.

Observe that the given linear system of equations has a pivot in each column.

To get the augmented matrix of the linear system, we simply need to add a column with the values of the constants. Doing this, we obtain:

A = [1 0 0 a | 0][0 1 0 b | 0][0 0 1 c | 0][0 0 0 d | 1]

Now, we can see that the given matrix is already in reduced echelon form.

Therefore, the reduced echelon form of the augmented matrix is simply the matrix A above.

Since the rightmost column of the augmented matrix is not a pivot column, the linear system represented by the augmented matrix is consistent. Therefore, the correct answer is A.

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Answer:

The tree was 40 in tall when planted

The tree's growth rate is 10in per year

Ten years after Planting, it is 140 inches tall

Step-by-step explanation:

original(slope intercept form) : y = 10x + 40

y = 10(10) + 40

y = 100 + 40

y = 40

The mode is the most appropriate measure of center to represent the data in the graph because it reflects the most common value(s) observed in the dataset. In this case, the mode is 3.

The most appropriate measure of center to represent the data in the given line plot is the mode.

The mode is the value or values that occur most frequently in a dataset. In this case, we can observe the frequencies of the data points on the line plot:

There is one dot above 2, 4, 8, and 9.

There are two dots above 6 and 7.

There are three dots above 3.

Based on this information, the mode(s) of the dataset would be the values that have the highest frequency. In this case, the mode is 3 because it appears most frequently with a frequency of three. The other data points have frequencies of one or two.

The mode is particularly appropriate in this scenario because it represents the most common or frequently occurring value(s) in the dataset. It is useful for identifying the central tendency when the data is discrete and there are distinct peaks or clusters.

While the median and mean are also measures of center, they may not be the most appropriate in this case. The median represents the middle value and is useful when the data is ordered. However, the given line plot does not provide an ordered arrangement of the data points. The mean, on the other hand, can be affected by outliers and extreme values, which may not accurately represent the central tendency of the dataset in this scenario.

Therefore, the mode is the most appropriate measure of center to represent the data in the graph because it reflects the most common value(s) observed in the dataset. In this case, the mode is 3.

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The difference of 0.27 is not statistically significant.

A statistically significant difference indicates if the responses of one group differ significantly from those of another when using statistical testing.

Now we know that any data of t-statistic that is greater than 1.96 is statistically significant.

Now the difference is 0.27. Hence it is not statistically significant.

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Answer:

13/16 is the answer. Bad handwriting but try to understand .

There were 682 children's and 332 adults were admitted when the entrance charge to an park is $4 for adults and $1.50 for children.

Given that,

The entrance charge to an amusement park is $4 for adults and $1.50 for children. 351 persons visited the park on one particular day, and 1014 dollars in entrance fees were collected.

We have to find how many people and kids were allowed inside.

We know that,

We get equations as,

1.5x+4y=351 ----->equation(1)

The other equation is

x+y=1014 ----->equation(2)

Take the equation(2)

x+y=1014

y=1014-x

Substitute y=1014-x in equation(1)

1.5x+4y=351

1.5x+4(1014-x)=351

1.5x+2056-4x=351

1.5x-4x=351-2056

-2.5x=-1705

2.5x=1705

x=1705/2.5

x=682

Substitute x=682 in equation(2)

y=1014-x

y=1014-682

y=332

Therefore, There were 682 children's and 332 adults were admitted when the entrance charge to an amusement park is $4 for adults and $1.50 for children.

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Answer:

15/4

Step-by-step explanation:

\(t=\frac{\frac{5}{2} }{\frac{2}{3} } =\frac{(5)(3)}{(2)(2)} =\frac{15}{4}\)

I hope this help you

Answer:

y+5=-3(x-2)

Step-by-step explanation:

y-y1=m(x-x1) is point-slope form

-5 is the y coordinate, so we replace y1 with it. 2 is the x coordinate, so we replace x1 with it. The slope is -3, so we replace m with it.

That would make the equation y+5=-3(x-2).

The present value of the sequence of annual payments of Rs 25000 each, the first being made at the end of the 5th year and the last being paid at the end of the 12th year, if money is worth 6% is Rs. 158620.39.

1: We can use the formula to calculate the present value of the annuity:

P = A x [1 - (1+i)^-n] / i

Where

P = Present Value

A = Annuity

i = Interest Raten = Number of payments

2: Calculate the present value of each payment using the formula:

P1 = 25000 / (1.06)⁵

P2 = 25000 / (1.06)⁶

P3 = 25000 / (1.06)⁷

P4 = 25000 / (1.06)⁸

P5 = 25000 / (1.06)⁹

P6 = 25000 / (1.06)¹⁰

P7 = 25000 / (1.06)¹¹

P8 = 25000 / (1.06)¹²

3: Substitute the values into the formula to find the present value:

P = P1 + P2 + P3 + P4 + P5 + P6 + P7 + P8

P = (25000 / (1.06)⁵) + (25000 / (1.06)⁶) + (25000 / (1.06)⁷) + (25000 / (1.06)⁸) + (25000 / (1.06)⁹) + (25000 / (1.06)¹⁰) + (25000 / (1.06)¹¹) + (25000 / (1.06)¹²)

P = 158620.39

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Answer:

No

Step-by-step explanation:

note \(\frac{7}{5}\) = 1.4

and  sinA is defined for - 1 ≤ sinA ≤ 1

Thus sinA ≠ \(\frac{7}{5}\)

Answer:

(4 x 14) + 10 = 66

Step-by-step explanation:

(4 x 14) + 10 = ?

56 + 10 = 66

Answer:

Step-by-step explanation:

Answer:

im sorry i wish i can help

Step-by-step explanation: