the diagram shows a polygon composed of rectangles

Answers

Answer 1

Answer:

210 feet

Step-by-step explanation:

Refer the attached figure

LK = 22 ft

KH=JI = 18 ft.

HG=14 ft.

CD=FE=16 ft.

AL=15 ft.

GF=CB = 5ft.

KJ=HI=10 ft.

CF=CB+BG+GF=5+15+5=25 ft. =DE

AB= LK+KH+HG=22+18+14= 54 ft.

Perimeter of polygon = Sum of all sides

Perimeter of polygon=AL+LK+KJ+JI+HI+HG+GF+FE+DE+CD+CB+BA

                                  =15+22+10+18+10+14+5+16+25+16+5+54

                                  =210                                              

Hence the perimeter of the polygon is 210 feet.                      

PLS MARK BRAINLIEST


Related Questions

How many centimeters are in 9 inches?

Answers

Answer:

22.86 centimeters

Step-by-step explanation:

How many centimeters are in 9 inches?

1 inch = 2.54 centimeters

9 inches = 2.54 x 9 = 22.86 centimeters

So, there are 22.86 centimeters in 9 inches.

Answer:

22.86 centimeters

Step-by-step explanation:

To convert inches to centimeters, multiply the inches by 2.54:

9·2.54=22.86

So, there are 22.86 centimeters in 9 inches.

Hope this helps :)

Find the length of the radius r

Answers

Step-by-step explanation:

Use Pythagorean theorem for right triangles

c^2 = a^2 + b^2      where c = hypotenuse and   a   and b are the legs

8.6^2 = 5^2 + r^2

8.6^2 - 5^2 = r^2

r = ~ 7  units

The radius is 7 units.

Len works at a photo gallery. He charges $50 for a large photo and $30 for a large frame. Sales tax is 4%. How much total tax will a customer pay on both? Fill in the blanks to show how to write and simplify expressions that represent the problem. calculate the total tax is 0.04(50 + 30). The total tax is $ 4 of 4 QUESTIONS​

Answers

Step-by-step explanation:

4% tax is .04 in decimal:

($  50  + 30 ) * .04    = 3.20 tax    

If you need 2 1/4 cups of water for 1 cup of rice how much water do you need if you have 1/3 cup of rice?

Answers

The amount of water needed for 1/3 cup of rice, is 3/4 cups of water.

How much water is needed for 1/2 cup of rice?

The problem asks us to find out how much water is needed for 1/3 cup of rice, given that 2 1/4 cups of water are needed for 1 cup of rice. To solve this problem, we can use a proportion.

A proportion is an equation that says two ratios are equal. In this case, we want to set up a proportion that relates the amount of water needed to the amount of rice.

Let's start by writing down what we know. We know that for 1 cup of rice, we need 2 1/4 cups of water. We can write this as a ratio:

2 1/4 cups water : 1 cup rice

Now we want to figure out how much water we need for 1/3 cup of rice. Let's call the amount of water we need "x" (we don't know what it is yet), and set up another ratio:

x cups water : 1/3 cup rice

We can now set up our proportion by equating these two ratios:

2 1/4 cups water : 1 cup rice = x cups water : 1/3 cup rice

To solve for x, we can cross-multiply and simplify. Cross-multiplying means we multiply the numerator of one ratio by the denominator of the other ratio, like this:

(2 1/4 cups water) * (1/3 cup rice) = (x cups water) * (1 cup rice)

To simplify this, we can convert the mixed number 2 1/4 to an improper fraction:

2 1/4 = 9/4

Now we can substitute these values and multiply:

(9/4 cups water) * (1/3 cup rice) = (x cups water) * (1/1 cup rice)

Multiplying the fractions on the left-hand side gives:

9/12 cups water = (x cups water) * (1/1 cup rice)

Simplifying the fraction on the left-hand side gives:

3/4 cups water = x cups water

So we have found that x, the amount of water needed for 1/3 cup of rice, is 3/4 cups of water. Therefore, if you have 1/3 cup of rice, you would need to use 3/4 cups of water to cook it.

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What is the volume of the rectangular prism?a prism has a length of 8 inches, width of 2 inches, and height of 12 and one-half inches.16 in.322 and one-half in.3200 in.3 212 and one-half in.3

Answers

The volume of the rectangular prism is 200 in³.

The volume of a rectangular prism is found by multiplying its length, width, and height. In this case, the prism has a length of 8 inches, width of 2 inches, and height of 12 and one-half inches. To calculate the volume, you would use the following formula:

Volume = Length × Width × Height

Now, plug in the given dimensions:

Volume = 8 in × 2 in × 12.5 in

Perform the calculations:

Volume = 16 in² × 12.5 in

Volume = 200 in³

So, the rectangular prism has a volume of 200 cubic inches. This means that the space occupied by the prism is equal to 200 cubic inches. The other options provided, such as 16 in³, 22 and one-half in³, and 212 and one-half in³, are not correct because they do not represent the product of the length, width, and height of the given prism. In conclusion, the correct answer for the volume of this rectangular prism is 200 in³.

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A trader made profit of 24percent by selling an article for GHC 3720.00.How much should he have sold it to make a profit of 48percent?

Answers

Therefore, the trader should sell the article for GHC 4440.00 to make a profit of 48%.

What is percent?

Percent is a way of expressing a number as a fraction of 100. The term "percent" means "per hundred". Percentages are usually denoted by the symbol %, which is placed after the numerical value. Percentages are used in many fields, including finance, science, and everyday life, to represent proportions, rates, and changes in quantities.

Here,

Let's call the original cost of the article "C".

We know that the trader made a profit of 24%, which means that he sold the article for 100% + 24% = 124% of its cost:

124% of C = GHC 3720.00

To find C, we can divide both sides by 1.24:

C = GHC 3720.00 / 1.24

C = GHC 3000.00

So the trader originally purchased the article for GHC 3000.00.

Now we want to know how much the trader should sell the article for to make a profit of 48%. This means that he wants to sell the article for 100% + 48% = 148% of its cost:

148% of C = ?

Substituting C = GHC 3000.00, we get:

148% of GHC 3000.00 = (148/100) x GHC 3000.00

= GHC 4440.00

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It is the day of the bake sale!

Mr. Smith sets up a rectangular table in front of school and uses tape to split it into 8 columns.
1 student brought in 12 brownies and 3 students brought in 4 brownies each.

How many rows should Mr. Smith make on the table so that each brownie has its own square?

Answers

Mr. Smith should make 3 rows on the table so that each brownie has its own square.

We shall use mathematical operations to determine the number of rows Mr. Smith would use on the table.

What are Mathematical operations?

Some mathematical operations include addition, subtractions, multiplications, division, etc., to find out the number of rows Mr. Smith would make.

First, let's find the total number of brownies brought by the students:

12 + (4 x 3) = 24

Next, we shall divide the table into squares so that each brownie has its own square.

Since there are 24 brownies, we need 24 squares.

Then, since the table has 8 columns, we can divide the brownies equally among these columns to get the number of rows needed.

24 ÷ 8 = 3

Therefore, Mr. Smith should make 3 rows on the table so that each brownie has its own square.

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1 Let us consider the series (n + 16)(n+18) Note: Write the exact answer not the decimal approximation (for example write not 0.8). Answer: (0) Let {sn} be the sequence of partial sums. Then 35 2n+32 Osn = 1/2 306 n2+35n+306 32 2n+32 306 72 +32n+306 O Sn = n Osn= ( 35 306 2n+35 12+35n+306 O Sn = 32 306 2n+32 72 +32n+306 (i) If s is the sum of the series then S =

Answers

S = lim[n → ∞] sn
 = lim[n → ∞] (306n^2 + 35n + 306)
 = ∞
So unfortunately, the series (n + 16)(n + 18) diverges to infinity and does not have a finite sum.To find the sum S of the series (n + 16)(n + 18), we need to take the limit of the sequence of partial sums as n approaches infinity. So let's first find the formula for the nth partial sum sn:

sn = (1 + 16)(1 + 18) + (2 + 16)(2 + 18) + ... + (n + 16)(n + 18)
  = ∑[(k + 16)(k + 18)] (from k = 1 to n)

Using the formula for the sum of squares, we can expand each term in the sum:

(k + 16)(k + 18) = k^2 + 34k + 288

So now we have:

sn = ∑(k^2 + 34k + 288) (from k = 1 to n)
  = ∑k^2 + 34∑k + 288n (from k = 1 to n)
  = n(n + 1)(2n + 1)/6 + 34n(n + 1)/2 + 288n
  = 306n^2 + 35n + 306

Now we can take the limit of sn as n approaches infinity to find S:

S = lim[n → ∞] sn
 = lim[n → ∞] (306n^2 + 35n + 306)
 = ∞

So unfortunately, the series (n + 16)(n + 18) diverges to infinity and does not have a finite sum.

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What is the recursive formula for the sequence -1, -3, -9, -33 ...

Answers

The recursive formula for an, the nth term of the sequence is a(n) = a(n - 1) * 2 where a(1) = -1

How to determine the recursive formula of the sequence

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

-1, -3, -9, -3³ ...

The above definitions imply that we simply multiply 3 to the previous term to get the current term

Using the above as a guide,

So, we have the following representation

a(n) = a(n - 1) * 3

Where

a(1) = -1

Hence, the sequence is a(n) = a(n - 1) * 2 where a(1) = -1

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Patricia bought


4


4 apples and


9


9 bananas for


$


12. 70


$12. 70. Jose bought


8


8 apples and


11


11 bananas for


$


17. 70


$17. 70 at the same grocery store.


What is the cost of one apple?

Answers

The cost of apples and bananas are $ 0.70 and $ 1.10 respectively if Patricia bought 4 apples and 9 bananas for $12.70 and Jose got 8 apples and 11 bananas for $17.70

Let the cost of one apple be a

the cost of one banana be b

In the case of Patricia,

12.70 = cost of 4 apples + cost of 9 bananas

Cost of 4 apples = 4a

Cost of 9 bananas = 9b

The equation we get is

4a + 9b = 12.70 ----(i)

In the case of Jose,

17.70 = cost of 8 apples + cost of 11 bananas

Cost of 8 apples = 8a

Cost of 11 bananas = 11b

The equation we get is

8a + 11b = 17.70 ----(ii)

Multiply (i) by 2

8a + 18b = 25.40 --- (iii)

Subtract (ii) and (iii)

7b = 7.70

b = $ 1.10

4a + 9 (1.10) = 12.70

4a + 9.90 = 12.70

4a = 2.80

a = $ 0.70

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The measures of the interior angles of a hexagon are represented by
, and. The measure of the largest interior angle is

Answers

The measure of the largest interior angle is  105°.

What is the measure of angle?

When two lines or rays intersect at a single point, an angle is created. The vertex is the term for the shared point. An angle measure in geometry is the length of the angle created by two rays or arms meeting at a common vertex.

Here, we have

Given: The measures of 5 of the interior angles of a hexagon are: 130, 120°, 80, 160, and 155. we have to find the measure of the largest interior angle.

The sum of all the six interior angles of a hexagon is 720°.

As sum of five angles is 130° + 120° + 80° + 160° +155° = 165°

The sixth angle is 720° - 165° = 75°

So the smallest interior angle of the hexagon is 75°.

and the largest exterior angle is 180° -  75° =  105°.

Hence, the measure of the largest interior angle is  105°.

Question: The measures of 5 of the interior angles of a hexagon are: 130, 120°, 80, 160, and 155 What is the measure of the largest exterior angle?

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Let {sn} be a geometric sequence that starts with an initial index of 0. the initial term is 2 and the common ratio is 5. what is s2?

Answers

The value of S2 is 50, under the condition that {sn} is  a geometric sequence that starts with an initial index of 0.

Here we have to apply the principles of geometric progression.
The derived formula for regarding the nth term concerning the geometric sequence is
[tex]= ar^{n-1 }[/tex]
Here
a = first term and r is the common ratio.
For the given case from the question
a = 2
r = 5.
Then,
s2 = a× r²
= 2×5²
= 50.
A geometric sequence refers to a particular sequence of numbers that compromises each term after the first is evaluated by multiplying the previous one by a fixed one , non-zero number known as  the common ratio.


For instance, if the first term of a geometric sequence is 2 and the common ratio is 5, then the sequence would be 2, 10, 50, 250.
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I don’t know how to do this

Answers

The given ordered pairs (4, 0.5), (2.5, 4.5), (0.5,3), and (2, 0) are plotted on the coordinate plane as shown in the graph below.

Plotting ordered pair in a coordinate plane

From the question, we are to plot the given ordered pairs on the coordinate plane

To plot the given ordered pairs, we will determine the location of the point on the coordinate plane

We will look at the first number in the ordered pair (the x-coordinate) and find that value on the x-axis. Also, we will look at the second number (the y-coordinate) and find that value on the y-axis.

Now, we will plot the point where the x-coordinate and y-coordinate intersect. The point is represented by a dot.

The ordered pairs are plotted on the coordinate plane as shown in the graph below.

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[1 point) The following table gives values of the differentiable function y = f(x). 012345678910 123-4.21-1-2135 Estimate the x-values of critical points of (x) on the interval 0 < x < 10. Classity each critical point as a local maximum, local minimum, or neither Enter your critical points as comma-separated xvalue, classification pairs. For example, if you found the critical points x = -2 and x = 3, and that the first was a local minimum and the second nother a minimum nor a maximum, you should enter (-2,min), (3,neither). Enter none if they are no critica/ points) critical points and classifications Now assume that the table gives values of the continuous function y = f'(x) (instead of F(x)). Estimate and classify critical points of the function f(x) critical points and classifications:

Answers

The critical points of f(x) on the interval 0 < x < 10 are: (2, max), (7.5, min)

To estimate the critical points of f(x) on the interval 0 < x < 10, we need to look for points where the derivative, f'(x), equals zero or is undefined. However, we are given a table of values for f(x) instead of f'(x), so we need to first estimate f'(x) using these values.

One way to do this is to use finite differences. We can calculate the first finite difference for each pair of adjacent values in the table, which gives an estimate of the derivative at the midpoint of the interval:

f'(x) ≈ (f(x+1) - f(x)) / (1)

Using this formula, we can calculate the following table of values for f'(x): 0123456789 23-2.79-8-5

Now we can look for critical points of f(x) by finding where f'(x) equals zero or is undefined: - f'(x) = 0 when x = 2 or x = 7.5 (approximately) - f'(x) is undefined at x = 0 and x = 10 (endpoints of the interval)

To classify each critical point, we need to look at the sign of the derivative near the point. If f'(x) changes sign from positive to negative at a critical point, then it is a local maximum. If it changes from negative to positive, then it is a local minimum. If it does not change sign, then it is neither a maximum nor a minimum.

Using the values in the table for f'(x), we can see that: -

Near x = 2, f'(x) changes sign from positive to negative, so it is a local maximum. - Near x = 7.5, f'(x) changes sign from negative to positive, so it is a local minimum. - At the endpoints x = 0 and x = 10, f'(x) is undefined, so there are no critical points.

Therefore, the critical points of f(x) on the interval 0 < x < 10 are: (2, max), (7.5, min)

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Roll two fair dice. find p(a |b) where a stands from sum of the two faces is 10 and b stands for two dice are showing different faces. [a] (reduced fraction)

Answers

The probability in the two fair dice problem is given as [tex]P(A|B) = 1/6[/tex].

How to calculate probability in the two fair dice problem?

To find [tex]P(A|B)[/tex], we first need to find [tex]P(B)[/tex], which is the probability that two dice are showing different faces.

The total number of possible outcomes when rolling two dice is [tex]6x6 = 36[/tex]. Out of these [tex]36[/tex] possible outcomes, there are [tex]6[/tex] outcomes where both dice show the same face (e.g., both dice show a 1). Therefore, there are [tex]36-6=30[/tex] outcomes where two dice show different faces.

Hence, P(B) = [tex]30/36 = 5/6[/tex].

Next, we need to find the probability of A and B occurring together, i.e., P(A and B).

The possible pairs of faces that add up to 10 are [tex](4,6), (6,4),[/tex] and [tex](5,5)[/tex]. Each of these pairs can occur in 2 ways (e.g., the pair [tex](4,6)[/tex] can occur as [tex](4,6) or (6,4))[/tex]. Therefore, there are 6 ways in total for the sum of two dice to be 10.

Out of these 6 outcomes, only one outcome (the pair (5,5)) violates condition B (i.e., both dice showing the same face). Therefore, there are [tex]6-1=5[/tex] outcomes where the sum of the two dice is 10 and the two dice show different faces.

Hence, P(A and B) [tex]= 5/36[/tex].

Using the formula for conditional probability, we can find P(A|B) as:

[tex]P(A|B) = P(A and B) / P(B) = (5/36) / (5/6) = 1/6.[/tex]

Therefore, [tex]P(A|B) = 1/6[/tex], which is the required probability.

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Find the value(s) of the variable(s). if necessary, round decimal answers
to the nearest tenth.

Answers

To find the value(s) of the variable(s), you need to have an equation or problem statement that relates the variable(s) to other known quantities. Once you have this equation or statement, you can solve for the variable(s) by manipulating the equation algebraically.

For example, if the problem states that 2x + 5 = 17, you can solve for x by first subtracting 5 from both sides to get 2x = 12. Then, you can divide both sides by 2 to get x = 6. So, the value of the variable x is 6.

In some cases, you may need to use more advanced methods such as factoring or the quadratic formula to solve for the variable(s). Regardless of the method used, it's important to check your answer(s) by plugging them back into the original equation to make sure they satisfy the given conditions.

In terms of rounding decimal answers to the nearest tenth, this means that if the answer is a decimal with more than one digit after the decimal point, you would round to the nearest tenth place (i.e. the digit immediately to the right of the decimal point). For example, if the answer is 3.456, you would round to 3.5.

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a tennis player makes a successful first serve 60% of the time. assuming that each serve is independent of the others, if the player serves 8 times, what is the probability that she gets exactly 3 first serves in?

Answers

The probability that the tennis player will make exactly 3 first serves out of 8 attempts is 0.278%.

To solve this problem, we can use the binomial distribution. The binomial distribution is used to calculate the probability of a certain number of successes (in this case, first serves) in a fixed number of independent trials (in this case, serves). The formula for the binomial distribution is:

P(X = x) = (n choose x) x pˣ x (1 - p)ⁿ⁻ˣ

where P(X = x) is the probability of getting x successes, n is the number of trials, p is the probability of success in each trial, and (n choose x) is the binomial coefficient, which represents the number of ways to choose x successes out of n trials.

Using this formula, we can plug in the values from our problem:

P(X = 3) = (8 choose 3) x 0.6³ x (1 - 0.6)⁸⁻³

P(X = 3) = (8! / (3! x 5!)) x 0.216 x 0.32768

P(X = 3) = 0.278%

This means that out of 1000 attempts, we can expect the player to make exactly 3 first serves around 2-3 times. It's important to note that this is just an estimation, and the actual number of successful serves may vary.

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A bag of marbles contains 5 red, 3 blue, and 12 yellow marbles. Predict the


number of times Hazel will select a blue marble out of 500 trials.

Answers

In a bag containing 5 red, 3 blue, and 12 yellow marbles, we will predict the number of times Hazel will select a blue marble out of 500 trials.

Step 1: Calculate the total number of marbles in the bag:
Total marbles = 5 red + 3 blue + 12 yellow = 20 marbles

Step 2: Determine the probability of selecting a blue marble:
Probability of selecting a blue marble = (number of blue marbles) / (total marbles) = 3 blue / 20 marbles = 3/20

Step 3: Predict the number of times Hazel will select a blue marble in 500 trials:
Predicted blue marbles selected = (probability of selecting a blue marble) x (total trials) = (3/20) x 500

Step 4: Perform the calculation:
(3/20) x 500 = 75

In conclusion, we predict that Hazel will select a blue marble 75 times out of 500 trials, given that the bag contains 5 red, 3 blue, and 12 yellow marbles.

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help please ill give brainliest

Answers

In the given circle, measure of angle m is 44° and the measure of angle n is 39°. Thus, the value of m is 44 and the value of n is 39

Circle Geometry: Calculating the values of m and n

From the question, we are to determine the values of m and n in the given circle

From one of the circle theorems, we have that

The angles at the circumference subtended by the same arc are equal. That is, angles in the same segment are equal.

In the given diagram,

Angle m is in the same segment as the angle that measures 44°

Since angles in the same segment are equal,

Measure of angle m = 44°

Also,

Angle n is in the same segment as the angle that measures 39°

Since angles in the same segment are equal,

Measure of angle n = 39°

Hence,

m ∠m = 44°

m ∠n = 39°

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PLEASE I NEED HELP I WILL MARK BRAINLEIST!!!!!!!!!!!!!
The table displays data collected, in meters, from a track meet.


three fourths 3 1 8
5 one fourth three fifths seven halves


What is the median of the data collected?
3.5
3
2
1

Answers

Answer:

2

Step-by-step explanation:

The median of a data set is the middle value when the data is arranged in order of size.

If the number of data points is odd, the median is the middle value. If the number of data points is even, the median is the average of the two middle values.

The given table of data is:

[tex]\begin{array}{|c|c|c|c|}\cline{1-4}\vphantom{\dfrac12}\frac{3}{4}&3&1&8\\\cline{1-4}\vphantom{\dfrac12}5&\frac{1}{4}&\frac{3}{5}&\frac{7}{2}\\\cline{1-4}\end{array}[/tex]

Arrange the data in order of size:

[tex]\dfrac{1}{4},\;\dfrac{3}{5},\;\dfrac{3}{4},\;1,\;3,\;\dfrac{7}{2},\;5,\;8[/tex]

As there are 8 data values, the median is the average of the two middle values.

The two middle values are 1 and 3.

The average of 1 and 3 is 2:  

[tex]\dfrac{1+3}{2}=\dfrac{4}{2}=2[/tex]

Therefore, the median of the given data is 2.

0. Jared works as a landscaper. He installs a sprinkler that sprays water in a circle with an 8-foot radius. What is the approximate area covered by the sprinkler? Use 3. 14 for n. ​

Answers

The area covered by a sprinkler that sprays water in a circle of an 8-foot radius is 200.96 square feet.

Circle is a 2-Dimensional shape. It has no vertex and edges. It has a center point which equidistant from any point of boundary or circumference of a circle.

Radius refers to the distance between the center and any point on the boundary or circumference of the circle.

The area of a circle is given as the product of a constant pi and the square of the radius.

A =  π[tex]r^2[/tex]

A is the area

r is the radius

r = 8 feet

A = π * 8 * 8

= 3.14 * 8 * 8

= 200.96 square feet

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This is part of a city map.

City map with First Street and Second Street as two lines equal distance apart that never meet. Main Street is intersecting Arch, First, Second, and Elm. Elm Street is intersecting Main and First Street.

Which streets are parallel to each other?

A.
First Street and Second Street

B.
First Street and Arch Street

C.
None of the streets are parallel to one another.

D.
Elm Street and Main Street

Answers

first street and second street

Help with problem in photo

Answers

Check the picture below.

Answer:

250 degrees

Step-by-step explanation:

For any circle tangent to line FG at point F, as shown in the diagram, and for any point E on the circle, the relationship between the measure of angle GFE and the arclength of FE is given by [tex]m~\text{arc}~FE=2m \angle GFE[/tex].

So, the measure of the arc FE is 110 degrees.  Since a circle is fully 360degrees, the missing arc represented by the question mark is given by the following equation:

? + 110 = 360

Solving for the ?

? = 250 degrees

Find the divergence of each of the following vector fields at all points where they are defined. div ( (2x2 - sin(xz)) i + 5j - (sin(xz)) k) = _____

Answers

The divergence of the vector field div((2[tex]x^2[/tex]L - sin(xz)) i + 5j - (sin(xz)) k) at all points where it is defined is: div(F) = 4x - z*cos(xz) - x*cos(xz).

To find the divergence of the given vector field, we need to apply the divergence operator to the vector field.

The divergence operator is given by the following formula:
div(F) = ∂Fx/∂x + ∂Fy/∂y + ∂Fz/∂z
Where F = (Fx, Fy, Fz) is the vector field.
Let's apply this formula to the given vector field:
F = (2[tex]x^2[/tex] - sin(xz)) i + 5j - (sin(xz)) k
div(F) = ∂Fx/∂x + ∂Fy/∂y + ∂Fz/∂z
      = (4x - zcos(xz)) + 0 + (-xcos(xz))
Therefore, the divergence of the given vector field is:
div(F) = 4x - zcos(xz) - xcos(xz)
This expression gives the divergence of the vector field at all points where it is defined.
In this case, the vector field is defined for all values of x, y, and z, so the divergence is defined for all points in space.
It is worth noting that the divergence of a vector field represents the rate at which the vector field flows out of a small volume of space surrounding a point.

If the divergence is positive, the vector field is flowing out of the volume; if it is negative, the vector field is flowing into the volume and if it is zero, the vector field is not flowing into or out of the volume.

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The divergence of the given vector field is div(F) = 4x - z × cos(xz) - x × cos(xz).

To find the divergence of the given vector field div( (2[tex]x^2[/tex] - sin(xz)) i + 5j - (sin(xz)) k), follow these steps:

Identify the components of the vector field:

F(x, y, z) = (2[tex]x^2[/tex]- sin(xz), 5, -sin(xz))

Compute the partial derivatives with respect to each variable:

∂F1/∂x = ∂(2[tex]x^2[/tex] - sin(xz))/∂x

∂F2/∂y = ∂(5)/∂y

∂F3/∂z = ∂(-sin(xz))/∂z

Calculate each partial derivative:

∂F1/∂x = 4x - z × cos(xz)

∂F2/∂y = 0

∂F3/∂z = -x × cos(xz)

Add the partial derivatives to find the divergence:

div(F) = ∂F1/∂x + ∂F2/∂y + ∂F3/∂z

div(F) = (4x - z × cos(xz)) + 0 + (-x × cos(xz))

Simplify the expression:

div(F) = 4x - z × cos(xz) - x × cos(xz)

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Computer calculation speeds are usually measured in nanoseconds. A nanosecond is 0. 000000001 seconds.


Which choice expresses this very small number using a negative power of 10?


А.


10-8


B.


10-9


С


10-10


D


10 11

Answers

1 x 10⁻⁹ expresses a very small number i.e. nanosecond using a negative power of 10. The correct answer is option b).

Computer calculation speeds are incredibly fast, and they are usually measured in very small units of time. One of these units is a nanosecond, which is equal to one billionth of a second, or 0.000000001 seconds. This unit is used to measure the time it takes for a computer to perform basic operations such as adding two numbers or accessing data from memory.

To express 0.000000001 in scientific notation using a negative power of 10, we need to determine the number of decimal places to the right of the decimal point until we reach the first non-zero digit. In this case, we count nine decimal places to the right of the decimal point before we reach the first non-zero digit, which is 1. This means that 0.000000001 can be written as 1 x 10⁻⁹.

In scientific notation, any number can be expressed as the product of a number between 1 and 10, and a power of 10. The power of 10 tells us how many places we need to move the decimal point to the left or right to express the number in standard form. In the case of 0.000000001, we need to move the decimal point nine places to the right to express the number in standard form.

By writing this number in scientific notation as 1 x 10⁻⁹, we can easily perform calculations with it and compare it to other values measured in nanoseconds. Hence option b) is the correct option.

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6) Mary sold $192 worth of greeting cards. If she received 25% commission on her sale
now much commission did she earn?

Answers

If Mary sold $192 worth of greeting cards and received a 25% commission on her sale, we can find her commission by multiplying the sale amount by the commission rate expressed as a decimal:

Commission = Sale amount * Commission rate

where the commission rate is 25% or 0.25

So, Mary's commission is:

Commission = $192 * 0.25 = $48

Therefore, Mary earned a commission of $48 on her sale of $192 worth of greeting cards.

In ΔWXY, x = 4.7 cm, y = 7.9 cm and ∠W=162°. Find the area of ΔWXY, to the nearest 10th of a square centimeter

Answers

The area of the triangle ∆WXY is derived to be 5.7 to the nearest tenth.

How to evaluate for the area of the triangle

When two side length of a triangle and the angle between them is given, the area is half the multiplication of the two sides and the sine of the angle.

Area of the triangle = 1/2 × 4.7 × sin162

Area of the triangle = 11.4738/2

Area of the triangle = 5.7369.

Therefore, the area of the triangle ∆WXY is derived to be 5.7 to the nearest tenth.

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n^2 - 5n + 6, n^2 - 4n+ 4 I need help, i know the answer may possibly be (n-3)(n-2)^2 factor it, an di need steps.

Answers

The simplified expression is (n - 3) / (n - 2).

What is the simplification of the expression?

The expression is simplified as follows;

(n² - 5n + 6) / (n² - 4n + 4)

n² - 5n + 6 can be factored as (n - 2) (n - 3)

n² - 4n + 4 can be factored as (n - 2) (n - 2)

Therefore, the expression becomes:

[(n - 2) (n - 3)] / [(n - 2) (n - 2)]

We can cancel the (n - 2) factor in the numerator and denominator, leaving us with:

(n - 3) / (n - 2)

So the simplified expression is (n - 3) / (n - 2).

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At a large university, 15% of students are left-handed. A psychology professor selects a random sample of 10 students and records L = the number of left-handed students in the sample. Starting on line 1 of the random-number table, how many left-handed students occur in the first trial of the simulation if we let 00-14 represent left-handed students?

Answers

The number of left-handed students in the first trial of the simulation can be found by following the above steps and counting the occurrences of two-digit numbers within the 00-14 range on line 1 of the random-number table.

To find out how many left-handed students occur in the first trial of the simulation, you'll need to follow these steps,
1. Identify the probability range for left-handed students, which is 00-14 as you've mentioned.
2. Start on line 1 of the random-number table.
3. Read each two-digit number on the line and check if it falls within the range 00-14.
4. Count the number of times a number within the 00-14 range appears in the first 10 two-digit numbers (since you're selecting a random sample of 10 students).
5. The count of numbers within the 00-14 range represents the number of left-handed students in the first trial of the simulation.

By doing the aforementioned processes and counting the occurrences of two-digit numbers between the ranges of 00 and 14 on line 1 of the random-number table, it is possible to determine the number of left-handed pupils in the simulation's first trial.

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Rewrite the following equation in slope-intercept form.

19x + 18y = –17

Answers

The given linear equation in slope intercept form is y = -19x/18 - 17/18.

What is the slope-intercept form?

In Mathematics and Geometry, the slope-intercept form of the equation of a straight line is given by this mathematical equation;

y = mx + c

Where:

m represents the slope or rate of change.x and y are the points.c represents the y-intercept or initial value.

By making "y" the subject of formula, we have the following:

19x + 18y = –17

18y = -19x - 17

y = -19x/18 - 17/18

By comparison, we have the following:

Slope, m = -19/18.

y-intercept, c = -17/18.

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