Consider the reaction below. NH4+ + H2O Right arrow. NH3 + H3O+ Which is an acid-conjugate base pair? NH4+ and NH3 NH4+ and H3O+ H2O and NH3 H2O and H3O+

dammn im not sure sorry

Answer:

Step-by-step explanation:

D OR F means add the two grade members together. You get 5

5 / 35 = 1/7

P(1/7) = 0.1428 Rounded to the nearest 1/100th = 0.14

Using the formula of volume of rectangular prism, the volume of clay used is 36 cubic inches

Multiplying a rectangular prism's length, width, and height yields its volume. The following equation determines a rectangular prism's volume:

Volume =length * width * height.

The dimensions should all be expressed in the same unit, such as inches, centimeters, or meters, for the length, breadth, and height.

In this problem, we have to find the volume of the outer prism and the volume of the inner rectangular prism.

volume of outer rectangular prism = 5 * 3 * 3 = 45 in³

volume of inner rectangular prism = 4 * 3/2 * 3/2 = 9in³

The volume of the clay used = (45 - 9)in³

Volume of clay used = 36in³

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Answer:

64 square centimeters

Step-by-step explanation:

The surface are of a pyramid is found by finding the sum of the area of the four sides and the base.

Finding the triangular face:

Area of triangle = \(\frac{1}{2} b h\) = \(\frac{1}{2}*4*6 = 12\)

12 * 4 (4 sides) = 48 square cm

Finding the Base = \(w * l = 4 * 4 = 16\)

Finally, we add it together. 48 + 16 = 64

A triangle is a three-sided polygon with three vertices and three edges. The number of triangles in the given figure are 1, 3, 9, and 27.

A triangle is a three-sided polygon with three vertices and three edges. It is one of the most fundamental geometric forms.

The number of shaded triangles in each of the triangles is shown below, therefore, the number of triangles in each triangle can are:

1st triangle = 1

2nd triange= 3

3rd triangle = 9

4th triangle = 27

Hence, the number of triangles in the given figure are 1, 3, 9, and 27.

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Answer:

first part is 1, 3, 9, 27

second part is A

third part is 29,524

Step-by-step explanation:

edg 23'

The mean, median, and sample variance of the given dataset are:Mean = 23.17Median = 21Sample variance = 173.5592

(a) Mean The mean (or average) of a dataset is calculated by summing up all the values and dividing by the total number of values.

The formula for calculating the mean is: `mean = (sum of values) / (total number of values)`For the given dataset, we have:20, 50, 22, 14, 23, 10

Sum of values = 20 + 50 + 22 + 14 + 23 + 10 = 139

Total number of values = 6Therefore, the mean is given by: `mean = 139 / 6 = 23.17`Answer: 23.17 (rounded to two decimal places)

(b) Median To find the median, we need to arrange the dataset in increasing order:10, 14, 20, 22, 23, 50The median is the middle value of the dataset. If there are an odd number of values, the median is the middle value. If there are an even number of values, the median is the average of the two middle values. Here, we have 6 values, so the median is the average of the two middle values: `median = (20 + 22) / 2 = 21` Answer: 21(e)

Sample variance s²The sample variance is calculated by finding the mean of the squared differences between each value and the mean of the dataset.

The formula for calculating the sample variance is: `s² = ∑(x - mean)² / (n - 1)`where `∑` means "sum of", `x` is each individual value in the dataset, `mean` is the mean of the dataset, and `n` is the total number of values.For the given dataset, we have already calculated the mean to be 23.17.

Now, we need to calculate the squared differences between each value and the mean:

20 - 23.17 = -3.1722 - 23.17

= -1.170 - 23.17

= -13 - 23.17

= -9.1723 - 23.17

= -0.1710 - 23.17

= -13.17

The sum of the squared differences is given by:

∑(x - mean)² = (-3.17)² + (-1.17)² + (-13.17)² + (-9.17)² + (-0.17)² + (-13.17)²

= 867.7959

Therefore, the sample variance is given by: `s² = 867.7959 / (6 - 1) = 173.5592`Answer: 173.5592 (rounded to four decimal places)

The mean, median, and sample variance of the given dataset are:Mean = 23.17Median = 21Sample variance = 173.5592

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Explanation:

Recall that tangent = opposite/adjacent.

For reference angle M, the side ON = 5 is the opposite side and MN = 12 is the adjacent side. We don't need the hypotenuse.

Answer:

C or 5/12

Step-by-step explanation:

When using statistics in a speech, you should usually cite exact numbers rather than rounding off. The correct option among the following statement is: b. cite exact numbers rather than rounding off. When citing the statistics, you should cite exact numbers rather than rounding off.

Statistics is the practice or science of gathering, analyzing, interpreting, and presenting data. It is a mathematical science that examines, identifies, and explains quantitative data. In many areas of science, business, and government, statistics play a significant role. The information collected from statistics is used to make better choices based on data that may be trustworthy, precise, and valid.The Role of Statistics in a Speech Statistics is an important tool for speakers to use in a presentation. They can be used to make the speaker's point clear and to convey his or her message. To be effective, statistics should be used correctly and ethically.

The following guidelines should be followed when using statistics in a speech: State your sources. It is important to let the audience know where the statistics came from. You should cite your sources and explain why you used them. If you gathered the data yourself, explain how you did it.Make sure your statistics are accurate. Check the numbers to ensure that they are accurate. If possible, use data from a reliable source. When using numbers, be specific. Don't round them off or use approximations.Don't use too many statistics. Too many statistics can be difficult to understand. Use statistics that are relevant to your topic. Use examples to help your audience better understand the statistics.

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Proper usage of statistics in a speech should include citing exact numbers, not overloading with too many stats, making clear the source, keeping a steady speaking rate, and not manipulating data to suit the argument. Providing anecdotal examples can also help audience better understand the statistical facts.

When using statistics in a speech, the best practices include citing exact numbers rather than rounding off, ensuring not to overload the speech with too many statistics, and being transparent about the source of the statistics. It's not ethical or professional to manipulate statistics to make your point. Instead, present them honestly to build trust with your audience. It's also important to keep the pacing of your speech consistent and not rush when presenting statistics.

In explaining a complex idea like a statistical result, providing an anecdotal example can be effective. This brings the statistic to life and makes it more relatable for the audience. However, when a source is cited, or a direct quotation is being employed, it's best to adhere to a recognized citation style like APA to maintain a professional standard.

Remember, the key to using statistics effectively in your speech is to portray them honestly, ensure they support your argument, and presented in a way that your audience can easily understand.

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The four students; Michal, Hypatia, clodoveo and Jamal's attempt to explain the expression "3 - 5 × (4 - 3 × 2)² - 1 + 2(1 - 2)³" is incorrect

This means to make simpler, either by reducing in complexity, reducing to component parts, or making easier to understand.

3 - 5 × (4 - 3 × 2)² - 1 + 2(1 - 2)³

Using PEMDAS

Correct workings:

3 - 5 × (4 - 3 × 2)² - 1 + 2(1 - 2)³

3 - 5 × (1 × 2)² - 1 + 2(-1)³

= 3 - 5 × (2)² - 1 + 2(-1)

= 3 - 5 × (4) - 1 - 2

= 3 - 20 - 3

= - 20

In conclusion, the correct simplification of the expression "3 - 5 × (4 - 3 × 2)² - 1 + 2(1 - 2)³" is -20

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Answer:

64 cm^2

Step-by-step explanation:

Split the figure into two parts (top and bottom rectangle)

TR : 2 x (12-5)*

   2 x 7 = 14

*= Since there are a few ways to split it up but I chose to make the top one shorter so you have to subtract 5 from 12

BR : 10x5 = 50

Add together

14 + 50 =

64 cm^2

Hope this helps :)

Answer:

x value=1

Step-by-step explanation:

Look where the two lines meet. That point is called the solution. The solution is (1,-4)

Given:

Required:

We need to solve for L.

Explanation:

Consider the given equation.

Subtract 2W from both sides.

Divide both sides by 2.

Final answer:

Answer:

6+-3 =-9

Step-by-step explanation:

so if u add a positive number to a negative number the whole answer  is a negative number i

Step-by-step explanation:

Magnitude = sqrt ( (-12)^2 + (-4)^2 ) = sqrt 160 = 12.649

Angle = arctan(-4/-12) = 198 degrees

The Magnitude: 12.649 and Direction: 18° (option c).

To find the magnitude and direction of the vector v = (-12, -4), we can use the following formulas:

Magnitude (or magnitude) of v = |v| = √(vₓ² + \(v_y\)²)

Direction (or angle) of v = θ = arctan(\(v_y\) / vₓ)

where vₓ is the x-component of the vector and \(v_y\) is the y-component of the vector.

Let's calculate:

Magnitude of v = √((-12)² + (-4)²) = √(144 + 16) = √160 ≈ 12.649 (rounded to the thousandths place)

Direction of v = arctan((-4) / (-12)) = arctan(1/3) ≈ 18.435°

Since we need to round the direction to the nearest degree, the direction is approximately 18°.

So, the correct answer is:

Magnitude: 12.649 (rounded to the thousandths place)

Direction: 18° (rounded to the nearest degree)

The correct option is: 12.649; 18°

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Given:

\(\sin x=-\dfrac{15}{17}\)

x lies in the III quadrant.

To find:

The values of \(\sin 2x, \cos 2x, \tan 2x \).

Solution:

It is given that x lies in the III quadrant. It means only tan and cot are positive and others  are negative.

We know that,

\(\sin^2 x+\cos^2 x=1\)

\((-\dfrac{15}{17})^2+\cos^2 x=1\)

\(\cos^2 x=1-\dfrac{225}{289}\)

\(\cos x=\pm\sqrt{\dfrac{289-225}{289}}\)

x lies in the III quadrant. So,

\(\cos x=-\sqrt{\dfrac{64}{289}}\)

\(\cos x=-\dfrac{8}{17}\)

Now,

\(\sin 2x=2\sin x\cos x\)

\(\sin 2x=2\times (-\dfrac{15}{17})\times (-\dfrac{8}{17})\)

\(\sin 2x=-\dfrac{240}{289}\)

We know that,

\(\cos 2x=1-2\sin^2x\)

\(\cos 2x=1-2(-\dfrac{15}{17})^2\)

\(\cos 2x=1-2(\dfrac{225}{289})\)

\(\cos 2x=\dfrac{289-450}{289}\)

\(\cos 2x=-\dfrac{161}{289}\)

Using the trigonometric ratios, we get

\(\tan 2x=\dfrac{\sin 2x}{\cos 2x}\)

\(\tan 2x=\dfrac{-\dfrac{240}{289}}{-\dfrac{161}{289}}\)

\(\tan 2x=\dfrac{240}{161}\)

Hence, the required values are \(\sin 2x=-\dfrac{240}{289},\cos 2x=-\dfrac{161}{289},\tan 2x=\dfrac{240}{161}\).

Extra people required is 50.

Each of the five workers should increase their efficiency to a rate of 15 sandwiches per 10 hour shift.

Proportions are defined as the concept where two or more ratios are set to be equal to each other.

Question 1 :

Number of associates = 30

Number of direct workers = 30 - 2 = 28

You work 8 hours a day and 5 days a week with two 15 minutes break or 30 minutes break per day.

Direct rate = 150 units per hour

Number of working hours in a week with break = 8 × 5 = 40 hours per week Number of working hours in a week = 7.5 hours per day × 5 days a week

                                                            = 37.5 hours per week

Units that department produce in a 40 hour week = 37.5 × 150 = 5625 units

28 people produce 5625 units in a week

Let x people produce 10,000 + 5625 = 15,625 units in a week

Using proportion,

28 : 5625 = x : 15,625

28 / 5625 = x / 15,625

x = (28 × 15,625) / 5625 = 77.78 ≈ 78

Extra people required = 78 - 28 = 50

Question 2 :

Number of sandwiches made in 10 minutes = 1

Number of sandwiches made in 10 hours = 60

5 workers are there. one worker makes 60/5 = 12 sandwiches

But Deli want number of sandwiches in 10 hours = 75

One worker should make 75/5 = 15 sandwiches instead of 12.

Number of sandwiches made in 8 minutes should be 1.

So the working efficiency on each worker should be increased and produce each one should produce 15 sandwiches in a 10 hour shift.

Hence extra people required in question 1 is 50 and efficiency of each worker in question 2 should be increased to 15 sandwiches in 10 hours shift.

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Answer:

.6239 as a fraction is 6239/10000.

The SoP representation provides a logical expression that outputs 1 when two and only two adjacent inputs are true.

The truth table, A, B, and C represent the input variables, and X represents the output.

To derive the Sum-of-Products (SoP) representation, the combinations of inputs (A, B, C) where the output (X) is true (1) and form the sum of these terms as a logical expression.

From the truth table, observe that the output (X) is true (1) when the following combinations of inputs are true:

A = 0, B = 1, C = 1

A = 0, B = 0, C = 1

A = 1, B = 0, C = 1

So the Sum-of-Products representation for the function is:

X = (A'BC') + (A'B'C') + (AB'C')

In this expression, '+' represents the logical OR operator, and ' denotes the negation (NOT) operator.

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The perimeter of the rectangle in yards is; 46 1/3 yards

The perimeter of a rectangle is the sum of the lengths of all its sides as follows;

Perimeter of a rectangle = 2(width + length

P = 2(10 1/3 + 12 5/6)

P = 2(31/3 + 77/6)

P = 2(139/6)

P = 46 1/3 yards.

Therefore, the perimeter of the rectangle in yards is 46 1/3 yards

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Answer:

The perimeter of the rectangle in yards is; 46 1/3 yards

Perimeter of a Rectangle

The perimeter of a rectangle is the sum of the lengths of all its sides as follows;

Width = 10 1/3

Length = 12 5/6

Perimeter of a rectangle = 2(width + length

P = 2(10 1/3 + 12 5/6)

P = 2(31/3 + 77/6)

P = 2(139/6)

P = 46 1/3 yards.

Therefore, the perimeter of the rectangle in yards is 46 1/3 yards

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Step-by-step explanation:

Answer:

hiii :)

Step-by-step explanation:

(x-8)+11= (answer)

The critical F value with 6 numerator and 60 denominator degrees of freedom at a = .05 is 2.37.

This means that if the calculated F value is greater than 2.37, we can reject the null hypothesis at the 5% level of significance. The other values given (3.74, 1.96, and 2.25) are critical values for different degrees of freedom and different levels of significance, but they are not relevant to this specific question.

How can you determine F's crucial value?

Start by locating the table that matches your degree of relevance. The junction of the column and rows that corresponds to your numerator and denominator DF should then be located.

For your test, the crucial values are shown in the F-table cell at that junction.

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The weighted average of the numbers 1 and 5 is 4.

We have,

Weighted average can be calculated as:

weighted average = (weight of first number x first number + weight of second number x second number) / (total weight)

In this case,

The weight of the first number is 1/4, the weight of the second number is 3/4, the first number is 1, and the second number is 5.

Thus, we have:

weighted average = (1/4 x  1 + 3/4 x 5) / (1/4 + 3/4)

= (1/4 + 15/4) / 1

= 16/4

= 4

Therefore,

The weighted average of the numbers 1 and 5  is 4.

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Answer:

C) \(60^\circ+n360^\circ,120^\circ+n360^\circ\)

Step-by-step explanation:

\(sinx-\sqrt{3-3sin^2x}=0\)

\(sinx=\sqrt{3-3sin^2x} \)

\(sin^2x=3-3sin^2x\)

\(4sin^2x=3\)

\(sin^2x=\frac{3}{4} \)

\(sinx=\pm\sqrt{\frac{3}{4} } \)

\(sinx=\pm\frac{\sqrt{3}}{2} \)

\(x=\frac{\pi}{3}+2\pi n,\frac{2\pi}{3}+2\pi n \)

\(x=60^\circ+n360^\circ,120^\circ+n360^\circ\)

Therefore, the correct option is C

The net of a triangular prism consists of two triangles and three rectangles.

In the net of a triangular prism, we can observe two types of polygons: triangles and rectangles.

First, let's discuss the triangles.

A triangular prism has two triangular faces, which are congruent to each other.

These triangles are equilateral triangles, meaning they have three equal sides and three equal angles.

Each of these triangles contributes two polygons to the net, one for each face.

Next, we have the rectangles.

A triangular prism has three rectangular faces that connect the corresponding sides of the triangular bases.

These rectangles have opposite sides that are parallel and equal in length.

Each rectangle contributes one polygon to the net, resulting in a total of three rectangles.

To summarize, the net of a triangular prism consists of two equilateral triangles and three rectangles.

The triangles represent the bases of the prism, while the rectangles form the lateral faces connecting the bases.

Altogether, there are five polygons in the net of a triangular prism.

It's important to note that the dimensions of the polygons may vary depending on the specific size and proportions of the triangular prism, but the basic shape and number of polygons remain the same.

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Answer:

4/25

Step-by-step explanation:

total no of children-15

total no of mothers-50

probability that a mother has i child

1/50

=8/50

=4/25

Answer:

0.16

Step-by-step explanation:

A group of 50 mothers were asked how many children they have. the

table shows the results.

number of children     1      2      3     4     5    

number frequency      8     12    10     14    6

What is the experimental probability of a mother having 1

child?

Total number of mothers = 8 + 12 + 10 + 14 + 6 = 50

Number of mothers with 1 child = 8

p(1 child) = 8/50 = 0.16

A common rule of thumb is to use the p-value of a statistical test to determine whether a difference in study outcomes is statistically significant.

If the p-value is less than the pre-determined level of significance (often set at 0.05), then the difference is considered statistically significant. This means that there is strong evidence to suggest that the observed difference is not due to chance alone, but rather a result of the variables being studied. However, it's important to keep in mind that statistical significance does not necessarily imply practical significance, and other factors such as effect size and clinical relevance should also be considered when interpreting study outcomes.

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Answer:

2.03% Rate of Population Growth.

Step-by-step explanation:

According to the Question,

Given, In 2006 the population was 1148 and in 2014 the population was 1348.

2006⇒2014  (8 Years)

So, \(1148 * (1+\frac{x}{100} )^{8} = 1348\)

\((1+\frac{x}{100} ) = \sqrt[8]{1.1742}\)

(1 + x/100) = 1.0202

x/100 = 0.020276

x = 2.03% Rate of Population Growth

Answer:

Hello this might not be the answer u need but i hope u understand i need these points for a give away im doing soon so hope u dont mind, and also i dont think im in a high enough grade yet ;-; sorry!

Step-by-step explanation: