The mean of eight numbers is 47. The seven numbers are 50, 27, 45, 72, 67, 32 and 38. What is the eighteenth number? A. 49 C. 45 B. 47 D. 50​

Answer:

A. 22°

E. 15

I. 39°

F. 71°

C. 25.6

H.12.9

K.55°

Answer:

c hope this helps

explain i did it on paper

To find the surface area of the figure, we need to consider the individual surfaces and add them together.

First, let's identify the surfaces of the figure:

The lateral surface area of the larger prism (excluding the base)

The two bases of the larger prism

The lateral surface area of the smaller prism (excluding the base)

The two bases of the smaller prism

The lateral surface area of a prism is given by the formula: perimeter of the base multiplied by the height.

The bases of the prisms are rectangles, so their areas can be calculated by multiplying the length by the width.

To find the missing prism's surface area, we need to consider that it is a smaller prism nested inside the larger prism. The lateral surface area and bases of the missing prism should also be included.

Once we have calculated the individual surface areas, we add them together to find the total surface area of the figure.

Without specific measurements or dimensions of the figure, it is not possible to provide a numerical answer. Please provide the necessary measurements or dimensions to calculate the surface area.

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2 : 4

1 : 2

black to white squares

theirs 2 black squares and 4 whites

put 2 first because its (black) to white

so we would have 2 : ? now we add the four to the other side

now we have 2 : 4

to simplify it we can half both sides witch will get us 1 : 2

The ratio of black to white squares is 1:2.

From the given figure, we have 4 white squares and 2 black squares.

The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.

Here, the ratio from black to white squares = 2:4

= 1:2

Therefore, the ratio of black to white squares is 1:2.

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The commutative, associative, and distributive properties are the properties of addition and multiplication.

The associative and commutative characteristics in mathematics are constant rules that apply to addition and multiplication.

The commutative property states that moving numbers about will still result in the same answer, while the associative property states that rearranging the numbers will provide the same result.

The distributive property states that multiplying the sum of two or more addends by a number yields the same outcome as multiplying each addend separately by the number and combining the resulting products.

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Answer:

The distributive property tells us how to solve equations in the form of a(b + c). The distributive property is sometimes called the distributive law of multiplication and division. Normally when we see an equation like this … 4(8+3) distributive property format 4(8+3) -> 4(11) -> 44 we just evaluate what’s in the parentheses first, then solve it: 4(8+3)=4x8 + 4x3=44 These are the 2 methods

Step-by-step explanation:

Answer:

\(2\frac{3}{4}\)

Step-by-step explanation:

We have to subtract the weight of the cat from the weight of the dog.

\(8\frac{1}{4} -5\frac{1}{2}\)

The first issue here is that there is not a common denominator. I'm going to multiply that 1/2 by 2 to make it 2/4. The 5 does NOT change.

\(8\frac{1}{4} -5\frac{2}{4}\)

Subtract the whole numbers first.

\(8\frac{1}{4} -5\frac{2}{4} = 3\frac{1}{4} -\frac{2}{4}\)

Then, we'll convert the first term to an improper fraction. We can do that by multiplying the whole number by the denominator and adding that number to the numerator.

\(3\frac{1}{4} -\frac{2}{4} ==> \frac{13}{4} - \frac{2}{4}\)

Solve.

\(\frac{13}{4} -\frac{2}{4} = \frac{11}{4}\)

Then, convert to a mixed number by dividing 11 by 4 and leaving the remainder in the numerator and putting the quotient in front as the whole number.

\(\frac{11}{4} ==> 2\frac{3}{4}\)

So, the answer is \(2\frac{3}{4}\)

2 3/4

Steps

8 1/4 - 5 1/2

a. Find Common Denominator

8 1/4 - 5 2/4

b. Make Improper Fractions

8 × 4 + 1 = 33

33/4

5 × 4 + 2

22/4

c. Subtract

33/4 - 22/4 = 11/4

d. Simplify

11/4 = 2 3/4

e. Answer

Therefore, Priya's dog is 2 3/4 pounds heavier than the cat.

Answer:

y = 1/4x + 4

Step-by-step explanation:

y = mx + b

Since the lines are parallel, the slope is the same. m = 1/4

y = 1/4x + b

Substitute (4,5)

5 = 1/4(4) + b

5 = 1 + b

4 = b

The y-intercept is (0, 4).

y = 1/4x + 4

The whole number solutions for the system are (0, 6), (1, 6), (2, 6), (3, 6), (4, 6), (5, 6), (6, 6), (7, 6), (0, 7), (1, 7), (2, 7), (3, 7), (4, 7), (5, 7), (6, 7).

To find the solutions, we can create a table and substitute different whole number values for x and y into the given system of inequalities. Starting with x = 0, we evaluate the values of y that satisfy both conditions. For x = 0, the second inequality becomes 0 ≤ y + 6, so y can be 0, 1, 2, 3, 4, 5, or 6. For each of these values, we check if it satisfies the first inequality, x + y < 8. We repeat this process for x = 1, 2, 3, ..., 7, and find all the corresponding values of y that satisfy both inequalities.

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Answer:

Step-by-step explanation:

3/8+ 1/8 = 4/8

The true statement about hypothesis testing is that option "c. If the test statistic is more extreme than the p-value, then we reject the null hypothesis."

In hypothesis testing, we evaluate whether there is enough evidence to support rejecting the null hypothesis in favor of the alternative hypothesis. The test statistic measures the strength of the evidence against the null hypothesis. The p-value, on the other hand, represents the probability of obtaining a test statistic as extreme or more extreme than the one observed, assuming the null hypothesis is true.

If the test statistic is more extreme than the p-value, it means that the evidence against the null hypothesis is strong. In such cases, we reject the null hypothesis because the observed data is unlikely to occur under the assumption that the null hypothesis is true. This leads us to accept the alternative hypothesis instead.

It is important to note that hypothesis testing does not prove or disprove the truth of the null hypothesis or alternative hypothesis definitively. Instead, it provides statistical evidence to support one hypothesis over the other based on the observed data and the chosen significance level (alpha). The significance level (alpha) determines the threshold at which we consider the evidence strong enough to reject the null hypothesis.

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Based on the formula of the quadratic function y=-x^2+6x-5, we know that its graph is a downward-facing parabola that opens wide, with a vertex at (3,-14), and an axis of symmetry at x=3.

Based on the formula of the quadratic function y=-x^2+6x-5, we can determine several properties of its graph, including its shape, vertex, and axis of symmetry.

First, the negative coefficient of the x-squared term (-1) tells us that the graph will be a downward-facing parabola. The leading coefficient also tells us whether the parabola is narrow or wide. Since the coefficient is -1, the parabola will be wide.

Next, we can find the vertex using the formula:

Vertex = (-b/2a, f(-b/2a))

where a is the coefficient of the x-squared term, b is the coefficient of the x term, and f(x) is the quadratic function. Plugging in the values for our function, we get:

Vertex = (-b/2a, f(-b/2a))

= (-6/(2*-1), f(6/(2*-1)))

= (3, -14)

So the vertex of the parabola is at the point (3,-14).

Finally, we know that the axis of symmetry is a vertical line passing through the vertex. In this case, it is the line x=3.

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Answer:

4. $648

5. $86.40

Step-by-step explanation:

You take the percent (we'll take 4 for example, so 8%) and change it to a decimal: .08. You then multiply the decimal (.08) by your other number (in this case $600) and the resulting number is your answer, but not final. Take whatever the answer was (in this case 48) and add it to the orignal number (600) to get $648.

Answer:

:5 or 6km per hour is your answer.

Answer:

1 because it is going by 3's

Answer:

así es es una fracción si necesita la respuesta me avisa

Answer:

B

B

B

I think these are right

Step-by-step explanation:

All of them are bs.

Yes, The preimage and the image have the same shape and size.

The reflection of an object across an axis is creating an image that has the same shape and size.

A triangle ABC is reflected over the x-axis to form A'B'C'

When reflected over an axis, the coordinate of the other axis is changed to its additive inverse.

(x,y)-------> (x,-y)

Let the coordinate of the triangle is  (1,1),(3,5),(3,1)

The image of the triangle when reflected over x-axis is

(1,1),(3,5),(3,1)       ------------->    (1,-1),(3,-5),(3,-1)

The shape of a right-angled triangle is the same in the image, the length of the side is same, it is just an image of the same shape and size.

The figure is attached with the answer.

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Table 1 is filled with option C, table 2 is filled with option A, B, and E, and table 3 is filled with option D.

There are six different shapes given in the questions.

We need to fill the table that is given in the question. The table is asked to segregate the figures into regular polygons, irregular polygons, and not polygon.

Therefore,

A regular polygon is only the option (C)

Irregular polygon is options A, B, and E.

Not a polygon is the only option (D)

Thus, table 1 is filled with option C, table 2 is filled with option A, B, and E, and table 3 is filled with option D.

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Answer:

C, the lines must be straight

Step-by-step explanation:

The magnification n can be found by using the formula n = -s'/s, where s' is the image distance and s is the object distance. The value of s' obtained from this new equation can be found by rearranging the formula to s' = -ns.

To find the magnification n, we can use the formula n = -s'/s, where s' is the image distance and s is the object distance. In this case, the object is placed 45.0 centimeters from the mirror, so s = 45.0 cm. The magnification can be found by calculating the ratio of the image distance to the object distance. By rearranging the formula, we get n = -s'/s.

To find the value of s' obtained from this new equation, we can rearrange the formula n = -s'/s to solve for s'. This gives us s' = -ns. By substituting the value of n calculated earlier, we can find the value of s'. The negative sign indicates that the image is inverted.

Using the given values, we can now calculate the magnification and the value of s'. Plugging in s = 45.0 cm, we find that s' = -ns = -(2/3)(45.0 cm) = -30.0 cm. This means that the image is located 30.0 centimeters from the mirror and is inverted compared to the object.

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Answer:

The circumference is 8π yards, or about 25.13 yards. Since we need to use 3.14 for π, the circumference of the pond is about 8 × 3.14 = 25.12 yards.

Answer:

5 m/s²

Step-by-step explanation:

To find the acceleration we apply Newton's second law of motion

F = ma   where F is the net force in Newtons, m the mass of the object (kg) and a the acceleration in  meters/second² (m/s²)

Given

F = 200 N

m = 40 kg

we have 200 = 40a

So a = 200/40=5 m/s²

The number of plastic tubing needed to fit around the edge of the pool is 141.1 ft.

The number of plastic tubing needed to fit around the area is calculated from the difference between the area of the rectangle and area of the circular pool.

Area of the circular pool is calculated as;

A = πr²

A = π (15 ft / 2)²

A = 176.7 ft²

The area of the rectangle is calculated as follows;

A = 20 ft x 30 ft

A = 600 ft²

The difference in the area = 600 ft² - 176.7 ft² = 423.3 ft²

The number of plastic tubing needed to fit around the edge of the pool is calculated as;

n = 423.3 ft² / 3 ft

n = 141.1 ft

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The chemical formula (CH₃CH(OH)CH₂CH₃) is an example of a tertiary alcohol. Then the correct option is C.

Because of the presence of this hydroxyl group, alcohols may establish hydrogen bonds with their atomic nuclei. Because the bonds formed are weak, the vapor pressure of alcohols is greater than those of their alkanes.

The chemical formula is given below.

CH₃CH(OH)CH₂CH₃

Then the chemical formula (CH₃CH(OH)CH₂CH₃) is an example of a tertiary alcohol.

Then the correct option is C.

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See the attached picture

Answer:

45

Step-by-step explanation:

(i just highlighting the answer from the other person's paper)

The linear equation of Johnny's charges is C(x) = 10 + 7.5x

From the question, we have the following parameters that can be used in our computation:

Initial charge = $10

Hourly rate = $7.50

Let the number of hours be x and the total cost be C(x)

So, we have the following representation

C(x) = Initial charge + Hourly rate * x

Substitute the known values in the above equation, so, we have the following representation

C(x) = 10 + 7.5x

Hence, the function is C(x) = 10 + 7.5x

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Complete question

Johnny charges $10 plus $7.50 per hour to mow lawns.

Determine the linear equation

Answer:

A screenshot of the graph is attached. :)

We must account for both the capital gain and the capital loss in order to determine your overall multiplied dollar return on this investment. Therefore, your total dollar return on this investment is $5,200.

We must account for both the capital gain (or loss) from the shift in stock price and the dividend payments made throughout the year in order to determine your overall dollar return on this investment.

To begin, let's figure out the financial gain per share:

Sales price minus purchase price per share equals capital gain per share.

Share price  $43.25 - $37

Shares with a capital return of $6.25

Thus, each share of your capital gain is worth $6.25.

Let's next determine the total quantity of dividend income earned during the year:

Dividend per share x shares outstanding equals dividend revenue per share.

Earnings per share from dividends = $0.25 * 800

$200 is the dividend yield per share.

As a result, you received $200 in dividend revenue overall.

When all is said and done, we can determine your overall dollar return on investment:

Dividend revenue per share multiplied by capital gain per share to calculate the total dollar return.

Total amount received: ($6.25 + $0.25) * 800

Return in dollars: $6.50 * 800

$5,200 is the overall profit.

Your overall dollar return on this investment is therefore $5,200.

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