Rosa bought some notebooks that cost $2 each. She also bought a compass that cost $3. She spent a total of $25. How many notebooks did she buy.

An estimator is Unbiased if the Expected Value of the estimator is exactly equal to the parameter that it is estimating. The correct answer is A.

An estimator is a statistic used to estimate an unknown population parameter, such as the mean or variance. An unbiased estimator is one that, on average, produces estimates that are equal to the true value of the population parameter being estimated. This means that the expected value of the estimator is exactly equal to the parameter it is estimating.

For example, if we are trying to estimate the population mean μ using a sample mean x', the sample mean x' is an unbiased estimator of μ if the expected value of x' is exactly equal to μ. In other words, if we take many random samples from the population, the average of those sample means will be very close to the population mean.

Unbiasedness is an important property for an estimator to have because it ensures that the estimator is not systematically overestimating or underestimating the population parameter.

An estimator that is biased will tend to consistently overestimate or underestimate the true value of the parameter, which can lead to incorrect conclusions or decisions based on the estimates.

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Answer:

1.049

Step-by-step explanation:

Divide 103 into 108

One US gallon is equal to 3.785411784 liter.

A gallon is the unit of volume, commonly used to measure liquid capacity. This unit is mostly used for larger containers in the US (United States). One gallon is equal to 231 cubic inches. The symbol of the gallon is “gal”.

A liter is an SI (International System of Units) unit of volume. One liter is equal to 1000 cubic centimeters (cm3) and 1 cubic decimeter (dm3). Liter is commonly used to measure volume of liquid. But it is also used to represent the capacity of electrical appliances such as refrigerators, etc. The symbol of liter “L”.

1 gal (US) = 3.785411784 L

1 L = 0.2641720524 gal (US)

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Answer: It is 4 if the units you are counting by is 1

Step-by-step explanation: Just count.

Answer:

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Step-by-step explanation:

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Answer: Coordinate Plane or Cartesian Plane. A plane that is divided into four regions by a horizontal line called the x-axis and a vertical line called the y-axis. x axis. the horizontal axis in a coordinate plane. y axis.

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Answer:

Area = 7 units^2

Step-by-step explanation:

The formula for the area of a triangle is given by:

A = 1/2bh, where

Since the base of the triangle is 7 units and the height is 2 units, we can plug in 7 for b and 2 for h in the triangle area formula to find A, the area of the triangle in square units:

A = 1/2(7)(2)

A = 7/2 * 2

A = 14/2

A = 7

Thus, the area of the triangle is 7 units^2.

The table of x, y and t for the given parametric equations is

The Table is as follows:

t     -4    -2    0    2    4

x    16    4    0    4    16

y      0    2    4    6    8        

The parametric equations are given:

x = t², y = t + 4; -4 ≤ t ≤ 4

if t = -4

x = (-4)² = 16

y = -4 + 4 = 0

if t = -2

x = (-2)² = 4

y = -2 + 4 = 2

if t = 0

x = (0)² = 0

y = 0 + 4 = 4

if t = 2

x = (2)² = 2

y = 2 + 4 = 6

if t = 4

x = (4)² = 16

y = 4 + 4 = 8

The Table is as follows:

t     -4    -2    0    2    4

x    16    4    0    4    16

y      0    2    4    6    8  

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Answer:

x = -17

Step-by-step explanation:

We need to subtract 15 from both sides (so that x can be by itself) and when we do so we get x = -2 - 15 = -17.

Answer:

x=-17

Step-by-step explanation:

15+x=-2

Subtract 15 from both sides

15+x=-2

-15      -15

---------------

     x=-17

Decimal form of number 39.76% is,

= 0.3976

We have to write,

A number 39.76% into a decimal form.

Now, We can write the number in decimal form as,

= 39.76%

= 39.76 / 100

= 0.3976

Therefore, Decimal form of number 39.76% is,

= 0.3976

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Answer:

Hey there!

Your answer is close- but not quite! You chose y=10x, however, if you look closely, the cost is 10 at 2 sandwiches. Thus, the slope should be 5, and correct answer would be y=5x.

Let me know if this helps :)

Answer:

the answer should be C

7.13 x 6 = 42.78

7 x 6 = 42

0.1 x 6 = 0.6

0.03 x 6 = 0.18

12 + 0.6 + 0.18 = 42.78

The rewritten values of all the values into an equivalent form as fractions is given below.

Part A:

- One and five eighths of value = 13/8

- Negative three halves = -3/2

- Seventeen percent = 17/100

- Negative 1.7 can be written in fraction as -1 - 7/10 = -10/10 - 7/10 = -17/10

Part B:

- One and five eighths = 1.625

- Negative three halves = -1.5

- Seventeen percent = 0.17

- Negative 1.7 = -1.7

Part C:

From greatest to least:

1. 13/8 (which is equivalent to 1.625 as a decimal)

2. -1.5

3. 17/100 (which is equivalent to 0.17 as a decimal)

4. -1.7

Part D:

To determine the order, we converted all the values to either fractions or decimals. Then, we compared them using the following criteria:

- If the numbers have the same sign, we compared their absolute values. The larger absolute value is the greater number.

- If the numbers have different signs, the negative number is always less than the positive number.

Thus, using these criteria, we compared the four given values and listed them from greatest to least.

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✩ Answer:

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  \(\bold{Hello!}\\\bold{Your~answer~is~below!}\)

✩ Step-by-step explanation:

  ✧･ﾟ: *✧･ﾟ:*✧･ﾟ: *✧･ﾟ:*✧･ﾟ: *✧･ﾟ:*

✺ Solve for:  \(3x-27=-6\):

✺ Add \(27\) to both sides:

✺ Add \(-6\) and \(27\) to get \(21\):

✺ Divide both sides by \(3\):

✺ Divide \(21\) by \(3\) to get \(7\):

\(Hope~this~helps~and,\\Best~of~luck!\\\\~~~~~-TotallyNotTrillex\)

            "ටᆼට"

The CV for the hourly wages of the sample of 130 system analysts is 30%.

The coefficient of variation (CV) is a measure of relative variability, calculated as the standard deviation divided by the mean.

In this case, we can calculate the standard deviation as the square root of the variance, which is 18. Therefore, the CV can be calculated as follows:

CV = (standard deviation / mean) x 100%
CV = (18 / 60) x 100%
CV = 30%

So the CV for the hourly wages of the sample of 130 system analysts is 30%.

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Answer: 79 degrees

Step-by-step explanation:

Answer:

79°

Step-by-step explanation:

The number of miles it takes the snail to move for an hour is 25/4 miles

how far, in miles, does it move in one hour?

Equate the ratio of number of miles to number of hours

7/50 : 7/8 = x : 1

7/50 ÷ 7/8 = x / 1

7/50 × 8/7 = x / 1

50/8 = x / 1

50 × 1 = 8 × x

50 = 8x

divide both sides by 8

x = 50/8

x = 25/4 miles

In conclusion, the snail moves 25/4 miles when traveling for an hour.

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The data being skewed and indicating higher wait times above 7 minutes due to a busy park is the most suitable description based on the given line plot.

The best description of the shape of the data is that it is skewed and might mean that the wait times were higher than 7 minutes because the park was busy.

Here's the explanation:

From the line plot, we can observe that there are 6 dots above 6, 5 dots above 7, 3 dots above 5, and 2 dots above 8.

The distribution is not symmetric, as the data points are not evenly spread around a central value.

The fact that there are more dots above 7 and 8 suggests that the wait times were higher than these values for a significant number of rides. This skewness in the data indicates that there were instances of longer wait times.

Additionally, the presence of dots above 5 and 6 suggests that there were some rides with shorter wait times as well.

However, the higher concentration of dots above 7 and 8 indicates that the park was likely busy, leading to longer wait times.

The option stating that the data is skewed and might mean that the wait times were higher than 7 minutes because the park was busy best aligns with the information provided by the line plot.

It acknowledges the skewness of the data towards higher wait times, suggesting that the park experienced increased demand and longer queues during the fair.

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Answer:

y = 35x - 517.

Step-by-step explanation:

y=35x−7

This line has a slope of 35so we can write a line parallel to it as

y - y1 = 35(x - x1) where (x1, y1) is a point on the line.

We are given this point (15, 8), so:

y - 8 = 35(x - 15)

y = 35x - 525 + 8

y = 35x - 517  is the required equation.

Answer:

− 1.9 f − 25

Step-by-step explanation:

You have to simplify the terms -2.3f + 0.4f and  16 - 9

hope this helped :))

Answer:25

Step-by-step explanation:

Answer: 25

Step-by-step explanation:

The variables examined in the study show the number of hospital visits for cooking-related knife injuries and their frequency during major holidays. The data compiled from emergency departments shows that there is a significant increase in the number of hospital visits for such injuries around major holidays.

This suggests that there may be a correlation between the holidays and the use of knives in cooking, possibly due to increased meal preparation and cooking during these times. Other variables that could be examined in further studies include the types of knives and cooking equipment used, the types of foods being prepared, and the demographics of those who sustain these injuries.

Variables refer to any characteristic, quantity, or attribute that can be measured and that can fluctuate or vary. Variables are of two types:

An independent variable is one that is thought to influence the dependent variable, which is the characteristic or response that is being measured.

The variables examined in the study indicate that the number of hospital visits for cooking-related knife injuries increases around major holidays. This implies that there is a direct relationship between cooking and knife injuries on major holidays. As a result, measures must be put in place to reduce the risk of knife injuries during the holidays. This includes the creation of awareness campaigns and the promotion of safety in the kitchen.

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Answer:

I would need more information but I believe its A

Step-by-step explanation:

The opposite angles of a parallelogram are equal.

x + y = a+ b

Let's consider a quadrilateral ABCD which is a parallelogram with AC as its diagonal.

We know, in parallelograms opposites' sides are parallel.

So, AB∥DC and AD∥BC

Since AB is parallel to DC and AC is the transversal.

By alternate angles,

∠BAC = ∠DCA

y = a                                                                                           -----------------(1)

Similarly, AD is parallel to BC and AC is the transversal.

The alternate angles,

∠DAC = ∠BCA

x = b                                                                                           -----------------(2)

Adding equations ( 1 ) and ( 2 ),

∠BAC + ∠DAC = ∠DCA + ∠BCA

∠BAD = ∠DCB

x + y = a + b

Similarly, we can prove, ∠ADC=∠ABC

Hence proved, opposite sites of a parallelogram are equal.

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Answer:

436.25 I think

Step-by-step explanation:

Answer:the value would be 6-10

Step-by-step explanation:

Answer:

(a) Vertical asymptote:  x = 5

     Horizontal asymptote:  y = 0

(b) Domain: (-∞, 5) ∪ (5, ∞)

     Range: (-∞, 0)

(c) x-intercept(s): None

     y-intercept: -1

Step-by-step explanation:

A vertical asymptote is a vertical line that the curve gets infinitely close to, but never touches. It is displayed as a vertical dashed line on the given graph. Therefore, the vertical asymptote is:

A horizontal asymptote is a horizontal line that the curve gets infinitely close to, but never touches. It is displayed as a horizontal dashed line on the given graph. Therefore, the horizontal asymptote is:

\(\hrulefill\)

Since the graph has a vertical asymptote at x = 5, it means that the function is undefined at x = 5. Therefore, the domain of the graph will be all real numbers except x = 5:

Since there is a horizontal asymptote at y = 0 and the curve appears to be always below the x-axis, it indicates that the range of the graph will be all negative y-values. Therefore, the range of the graphed function is:

\(\hrulefill\)

The x-intercepts are the x-values of the points where the curve intersects the x-axis, so when the y-coordinate of a point on the graph is zero.

As the given graph has a horizontal asymptote at y = 0 and the curve appears to be always below the x-axis, it implies that the graph does not cross the x-axis. Therefore:

The y-intercept is the y-value at the point where the curve intersects the y-axis, so when the x-coordinate of a point on the graph is zero.

From inspection of the given graph, we can see that the curve crosses the y-axis at y = -1. Therefore:

According to the question The equilibrium constant \((K_{eq})\) relates the concentrations of reactants and products \(K_{eq} \ for\ 2AB \rightleftharpoons 2A + 2B \ is\ 49.\)This indicates that the equilibrium position favors formation of products.

The equilibrium constant \((K_{eq})\) relates the concentrations of reactants and products in a chemical reaction at equilibrium. In the given reaction,

\(A + B \rightleftharpoons AB, the\ K_{eq}\ is\ 7\).

When considering the reaction \(2AB \rightleftharpoons 2A + 2B\), the stoichiometric coefficients are doubled on both sides. According to the principles of equilibrium, the equilibrium constant for the modified reaction can be obtained by squaring the original \(K_{eq}\).

Therefore, the \(K_{eq}\) for \(2AB \rightleftharpoons 2A + 2B is (K_{eq})^2 = (7)^2 = 49\). This indicates that the equilibrium position favors the formation of products in the double reaction compared to the original reaction.

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Answer:

8 times

Step-by-step explanation:

28/3.5 = 8