i could really use some help please

I Could Really Use Some Help Please

Answers

Answer 1

The coordinate of the circumcentre of ΔABC is (-1, 0.15).

What is a triangle?

It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.

We have,

Triangle ABC.

A = (-5, -4)

B = (3, -4)

C = (-1, 6)

The circumcentre of a triangle is the point where the perpendicular bisectors of the sides of the triangle intersect.

Now,

Let the circumcentre be M = (x, y).

The length from each side of the triangle to the circumcentre is equal.

So,

AO² = BO² = CO²

Now,

AO² = BO²

(x + 5)² + (y + 4)² = (x - 3)² + (y + 4)²

x² + 10x + 25 + y² + 8y + 16 = x² - 6x + 9 + y² + 8y + 16

10x + 25 = -6x + 9

16x + 16 = 0

x + 1 = 0

x = -1

BO² = CO²

(x - 3)² + (y + 4)² = (x + 1)² + (y - 6)²

x² - 6x + 9 + y² + 8y + 16 = x² + 2x + 1 + y² - 12y + 36

-6x + 9 + 8y + 16 = 2x + 1 - 12y + 36

20y - 8x + 25 - 36 = 0

20y - 8x - 11 = 0

20y = 11 + 8x

y = (11 + 8x)/20

y = (11 - 8)/20

y = 3/20

y = 0.15

Thus,

Circumcentre M = (-1, 0.15)

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Related Questions

anyone know part 1 of this question ?

Answers

Answer:

14

Step-by-step explanation:

I don't know it right now

A situation in which solutions exist so that both parties are trying to find a mutually acceptable solution to a complex conflict is known as which of the following?
A) mutual gains
B) win-lose
C) zero-sum
D) win-win
E) None of the above.

Answers

D) Win-win  is a situation in which both parties come away with a positive outcome.

Win-win is a situation in which both parties come away with a positive outcome. It is the ideal solution to a complex conflict, as it ensures that both parties benefit in some way. Win-win solutions involve a collaborative approach to problem solving, where each party works together to find a mutually beneficial solution. This can involve compromise, trade-offs, and creative negotiation.

For example, two companies may be in competition for the same contract. Rather than viewing each other as adversaries, they could work together to create a win-win solution that meets their respective needs. This could involve a collaborative approach to the project, or a mutually beneficial pricing arrangement.

Win-win solutions also require an understanding of each party's needs, interests, and values. It is important to identify the underlying interests that each party has, and use them to create a solution that meets everyone's needs. By taking the time to understand each other's perspectives, it is possible to create a solution that is beneficial to both parties. In this way, win-win solutions provide an opportunity to develop a constructive relationship that can be beneficial in the long term.

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Manny drives 2 times the hours that Tabria does. Manny and Tabria drive for a total of 9 hours. How
long did each person drive?

Answers

Answer:

4.5

Step-by-step explanation:

4.5 times 2 = 9

9 divided by 2 =4.5

Write the following set as an interval using interval notations. (x|-7

Answers

The set |x| < 7 using interval notation is given as follows:

0. < x < 7.

How to obtain the absolute value of a number?

The absolute value of a number gives the distance of a number from the origin, hence it basically can be interpreted as the number without the signal.

The expression for this problem is defined as follows:

|x| < 7.

Then the bounds of the open interval are given as follows:

|-7| = 7.|7| = 7.

The lowest absolute value is given as follows:

0.

Hence the interval is given as follows:

0 < x < 7.

Missing Information

The problem asks for the interval notation of:

|x| < 7.

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what is the 35th term for 9, 3, 1, 1/3

Answers

Answer:

111

Please mark brainliest

Step-by-step explanation:

There are two different pathways around a circular lake. The circular pathway is inscribed inside of a square pathway. The circular pathway has an area of 768 square feet. How far would a person walk if she walked around the square pathway? Use 3 for pi.

Answers

The person walks 128 feet if she walked around the square pathway.

What are the 2D shapes?

The plane forms that can be sketched on a flat (or plane) surface or a piece of paper are known as 2D shapes. Every 2D shape has different attributes, like area and perimeter. Some of the two-dimensional objects have sides and corners, while others have curved edges.

Given two pathways,

circular and square, and the circular pathway is inscribed inside of a square pathway,

area of circular pathway = 768 square feet

area of circle = π/4*d²

where d is the diameter

768 = π/4*d²

768*4 = πd² (π = 3)

3072/3 = d²

d = √1024

d = 32 feet

since the circle is inscribed in a square the length of a side of square is equal to the diameter of the circle,

d = a = 32 feet

to find the perimeter of the square path,

perimeter of square = 4a

perimeter of square = 4*32

perimeter of square = 128 feet

Hence the person has to cover 128 feet if she walked around the square pathway.

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anyone help this is part 1

Answers

The surface area of a triangular prism can be calculated by adding the area of the triangular base to the area of the three rectangular lateral faces.

First, we'll find the area of the triangular base. Since the triangle is isosceles and has a right angle, we know that the base is a 19 in. by 19 in. square. The area of this square is 19 in. x 19 in. = 361 in^2

Next, we'll find the area of each lateral face. Since the triangular prism is 42 in. long and the base is 19 in. wide, we know that the height of each lateral face is 42 in. The area of each lateral face is 42 in. x 19 in. = 798 in^2

To find the total surface area of the triangular prism, we add the area of the base to the area of the three lateral faces:

Surface area = 361 in^2 + 3(798 in^2) = 361 in^2 + 2394 in^2 = 2755 in^2

To find the surface area of resulting prism, We just need to find the area of the resulting rectangle after gluing the lateral faces with the 26.9-in. sides together.

Surface area of resulting prism = 42 in x 26.9 in = 1138 in^2

So, the surface area of each triangular prism is 2755 square inches, and the surface area of the resulting prism after gluing the lateral faces with the 26.9-in. sides together is 1138 square inches.

Lisa is traveling to Greece this summer and needs to exchange 500 US Dollars to Euros.

How many Euros will Lisa receive with the following exchange rate?

1 USD = 0.95 Euros

Answers

Answer: Lisa will receive 475 Euros.

Step-by-step explanation: 500x0.95 = 475.

Answer:

Step-by-step explanation:

2

Solve 2 4/5x=−1 1/4 . Write your answer as a fraction in simplest form.

Answers

Answer: -56/55

Step-by-step explanation:

2 4/5x = -11/4

14/5x = -11/4

Cross multiply:

-55x = 14 * 4 = 56

x = -56/55

A new computer will load 17% faster than the old computer it took the old computer 22 seconds to load one graphic and nine seconds to load a paragraph of text if you're loading a document with two graphics and one paragraph how long will it take the new computer to load?

Answers

The new computer will take to loading a document with 2 graphics and 1 paragraph is 43.99 seconds.

How to calculate time taken using percentage?

Time taken can be calculated using percentages by determining the percentage of time that has already passed, then calculating the remaining time based on the percentage of time remaining.

For example, if you are asked to calculate the time taken for a project that is 50% complete, you would first need to determine the total length of the project. Let's say it is a project with a timeline of two months.

Next, you would need to calculate the percentage of time that has already passed. In this case, since the project is 50% complete, 50% of the two months has already passed. This means that one month has passed.

Finally, you can determine the time taken by subtracting the time that has already passed from the total length of the project. In this case, the time taken would be one month, since one month has already passed and there is one month remaining until the project is completed.

The old computer would load 2 graphs and one paragraph in:

22 × 2 seconds + 9 seconds = 53 seconds

The new computer is 17% faster so:

53 - (17% × 53) = 43.99 seconds

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How many cords of wood could you fit in a room that is 4 yards long 4 yards wide and two yards High answer to the nearest hundredth

Answers

Answer: To find the number of cords of wood that can fit in a room, we need to find the volume of the room and then divide that by the volume of a cord of wood.

A cord of wood is a unit of measurement that is equal to 128 cubic feet.

The volume of the room can be found by multiplying the length by the width by the height:

V = 4 x 4 x 2 = 32 cubic yards

To convert cubic yards to cubic feet, we can use the conversion factor of 1 cubic yard = 27 cubic feet.

So, the volume of the room in cubic feet is:

V = 32 x 27 = 864 cubic feet

To find the number of cords of wood that can fit in the room, we divide the volume of the room by the volume of a cord of wood:

cords = 864 / 128

cords ≈ 6.75

So, you could fit approximately 6.75 cords of wood in a room that is 4 yards long, 4 yards wide, and 2 yards high, to the nearest hundredth.

Step-by-step explanation:

Sample of 10 medical bills is selected, what is the probability that 0 medical bills will contain errors

Answers

You have a 39.6% chance of winning according to the binomial distribution, it has been discovered.

Calculate probability?

Only two outcomes are conceivable for each trial. You either succeed or fail in hitting the target. The binomial distribution is used to answer this question because the likelihood that a target will be struck on any given trial is independent of all other trials.

It is determined by the number of unique combinations of x objects from a set of n elements and the likelihood of striking the objective, which is 63%, and is expressed as the probability of exactly x successes on n repeated trials with p probability.

hence, two throws

The likelihood is P(X = 2) since you must strike it twice to win.

0.396 = 39.6%

The complete question is,

Considering the circumstances, what is your likelihood of success: A plush animal is what you're attempting to win. To succeed, a target must be hit twice straight. It is 63% likely that you will succeed on your first attempt.

O 23.3% \sO 63%

O 106% \sO 39.6%.

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Circle E has a radius of 5.3 meters. FG is a chord and HE is a perpendicular bisector of FG. If FG = 6.5 meters, calculate the distance of EH.

Answers

The distance of EH is 4.1866 meters.

What is Circle?

Circle is a two dimensional figure which consist of set of all the points which are at equal distance from a point which is fixed called the center of the circle.

From the question, we have,

Radius of the circle = 5.3 meters

EF = EI = 5.3 meters

FG = 6.5 meters

Also, we have, HE is a perpendicular bisector of FG.

FH = HG = 6.5 / 2 = 3.25

We have to calculate EH.

We have, FH is the projection of EF in the vertical axis.

FH = EF sin (θ), where θ is the angle FEH.

3.25 = 5.3 sin (θ)

sin (θ) = 0.6132

θ = sin⁻¹ (0.6132)

θ = 37.82°

We have,  EH is the projection of EF into the horizontal axis.

EH = EF cos (θ)

     = 5.3 cos (37.82°)

     = 5.3 × 0.7899

     = 4.1866 meters

Hence the length of EH is 4.1866 meters.

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In AUVW, UV ~ WU and m/W = 38°. Find mLU.

Answers

It would be 71 degrees

Find x, y, and z. Express in simplest radical form.
Please help

Answers

The values of the variables namely x, y and z of the given triangle are;

x = 12, y = 9√13, z = 6√13

How to use Pythagoras Theorem?

There are three sides of a right angle triangle namely; Opposite, Adjacent and Hypotenuse.

The formula for Pythagoras theorem is;

Hypotenuse² = Opposite² + Adjacent²

Thus;

y² = 27² + 18²

y = √(27² + 18²)

y = √1053

y = 9√13

Using concept of similar triangles, we can say that;

x/18 = 18/27

x = (18 * 18)/27

x = 12

Using Pythagoras theorem again;

z = √(12² + 18²)

z = √468

z = 6√13

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2. Write an equation to represent f(e)










Absolute Value Functions

Answers

The absolute value function for f(e) is given as follows:

f(e) = |e|

The piece-wise definition of the function is given as follows:

f(e) = e, e >= 0.f(e) = -e, e < 0.

What is the absolute value of a number?

The absolute value of a number is the number without the signal, representing the difference between the number and zero.

This means that the elevation function gives just elevation, without considering if the elevation is positive or negative, and thus the function is defined as follows:

f(e) = |e|

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I DONT GET
can u help me

Answers

Answer:

the rate is 30:5

the unit rate is 6:1

Step-by-step explanation:

GIVE ME BRAINLY

CLICK THE CROWN BY MY ANWSER!

Please help to answer this qns.. 6th grade algebra

Answers

The linear function that gives the number of matchsticks required to make the nth pattern is given as follows:

M(n) = 15n.

How to define the linear function?

The slope-intercept definition of a linear function is given as follows:

y = mx + b.

In which:

m is the slope, representing the rate of change.b is the intercept, representing the value of y when x = 0.

When a linear function represents a proportional relationship, it means that the intercept is of zero.

As for each pattern the number of sticks is increased by 15, the slope is of 15 and the equation is given as follows:

M(n) = 15n.

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f(x) = 3x and g(x) = x − 1, find (gof)(− 2)

Answers

The solution is g(ƒ(-2)) = 9.

What is meant by solution?

Any mixture of one or more solutes that have been dissolved in a solvent is referred to as a solution. To create a homogenous mixture, a solute must dissolve in a solvent.To create a homogenous mixture, a solute must dissolve in a solvent.In chemistry, a solution is a homogeneous mixture of two or more compounds in their relative proportions. The composition of the solution can be continually changed up to the solubility limit.Although solutions of gases and solids are possible, the term "solution" is most frequently used to refer to the liquid condition of matter.A homogenous mixture of two or more components with particles smaller than 1 nm is referred to as a solution.

{g∘f}(2) = g(f(-2))

g(-2) = -6

ƒ(-6) = 2x - 1

ƒ(-6) = -2(-6) - 1

ƒ(-6) = 13

ƒ(g(2)) = 13

{f∘g(-2) = f(g(-2))

ƒ(2) = 3

g(3) = -3x

g(3) = -3(-3)

g(3) = -9

g(ƒ(-2)) = 9

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find the value of x and y

Answers

The measure of the exterior angle x of the polygon is equal to 76°

How to evaluate for the exterior angle x

The exterior angles of a polygon added together is equal to 360° so;

x + x + 60° + 64° + 36° + 48° = 360°

2x + 208° = 360°

2x = 360° - 208° {subtract 208° from both sides}

2x = 152°

x = 152°/2 {divide through by 2}

x = 76°

Therefore, the measure of the exterior angle x of the polygon is equal to 76°

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Determine the shaded area

Answers

The shaded area is 169.56 inch² for the given set of semicircles with radius 6 inch and 12 inch.

What is area?

The size of a region on a surface is measured in area. Surface area refers to the area of an open surface or the boundary of a three-dimensional object, whereas area of a plane region or plane area refers to the area of a shape or planar lamina. The total space occupied by a flat (2-D) surface or the shape of an object is defined as its area. Draw a square on a piece of paper with a pencil. It is a two-dimensional figure. The area of the shape on the paper is referred to as its Area. Consider your square to be made up of smaller unit squares.

Here,

area1=1/2*3.14*r²

=0.5*3.14*12²

area2=1/2*3.14*r²

=0.5*3.14*6²

area=area1-area2

=0.5*3.14*12²-0.5*3.14*6²

=169.56 inch²

The shaded area for the given set of semicircles with radius 6 inch and 12 inch is 169.56 inch².

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Explain weather there is a possible transformation of f in the form g(x) =f(x)+k, where k is a constant for which the graph y=g(x) will have no x-intercepts. Enter your answer and your justification in the space provided.

Answers

Answer:

Yes, a transformation of f in the form g(x) =f(x)+k can have no x-intercepts. This will occur if the constant k is added to the y-value of every point on the f(x) graph, resulting in the chart of g(x) being shifted upward by k units. If the original diagram of f(x) had no x-intercepts, then the graph of g(x) would also have no x-intercepts because the x-coordinate of each point on the graph of f(x) is unchanged by the transformation.

Step-by-step explanation:

graph the equation y=2/3x-1 iready quiz graph linear equations

Answers

Answer: To graph the equation y = 2/3x - 1, we can start by finding some points that satisfy the equation.

We can pick any value for x and substitute it into the equation to find the corresponding y-value.

For example:

When x = 0, y = (2/3)(0) - 1 = -1

When x = 1, y = (2/3)(1) - 1 = -1/3

When x = 2, y = (2/3)(2) - 1 = 1/3

When x = 3, y = (2/3)(3) - 1 = 2/3

We can plot these points on a coordinate plane and then connect them with a straight line to graph the equation.

The graph will be a line that passes through the points (0, -1), (1, -1/3), (2, 1/3), and (3, 2/3).

Step-by-step explanation:

what is theregular price ,r,of a museum ticket before the discount? enter the amount in the table

Answers

Answer:

60

Step-by-step explanation:

54/90% =60

Classify the following polynomial by degree and number of terms
X3-8

Answers

The polynomial X3-8 has a degree of 3 and 2 terms

What are algebraic expressions?

Algebraic expressions are defined as mathematical expressions comprising of variables, coefficients, terms, constants and factors.

These algebraic expression are also comprised of arithmetic operations, such as;

DivisionAdditionSubtractionFloor divisionMultiplicationBracketParentheses

Polynomials are also described as algebraic expressions composed of arithmetic operations and also non-negative integer exponentiation of variables.

Given the polynomial, the number of terms is 2

Hence, the number of terms is 2 and the degree is 3

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What is the perimeter of triangle “QTS”

Answers

Answer: 15 + x, or x + 15

Step-by-step explanation:

The perimeter of triangle QTS is represented as line segments QT + TS + QS.  This means:

6 + 6 + ((3x - 1) + (4 - 2x))

You can first simplify 6 + 6, 6 + 6 = 12

12 + ((3x - 1) + (4 - 2x))

Next, focus on ((3x - 1) + (4 - 2x))

3x + (-1) + 4 + (-2x), addition is commutative, so use addition
3x + (-2x) + 4 + (-1)
(3x - 2x) + (4 - 1)
x + (4 - 1)
x + 3

The equation is now:

12 + x + 3

You can simplify this more by adding 12 + 3

15 + x

The answer is 15 + x or x + 15 because that is as simplified as the equation can be.

I hope this helps!

Solve for
r

-48 - r = -39

Answers

Answer:

[tex]r=-9[/tex]

Step-by-step explanation:

[tex]-48 - r = -39[/tex]

[tex]-48+-r=-39[/tex]

[tex]-r-48=-39[/tex]

[tex]-r-48+48=-39+48[/tex]

[tex]-r=9[/tex]

[tex]\cfrac{-r}{-1}=\cfrac{9}{-1}[/tex]

[tex]r=-9[/tex]

The function below is defined by two equations. The equation in the first row gives the output for negative nu the domain. The equation in the second row gives the output for non-negative numbers in the domain. Find th indicated function values. f(x) = 8x+4 if x ​

Answers

The indicated function values for f(x) = 8x + 4 if x is:

(a) f(-4) = -13,     (b) f(2) = 22

(c) f(0) = 8,        (d) f (-100) + f(100) = 215

What is meant by function ?

A function is an equation with just one solution for every value of y in the equation. A function pairs each input of a particular type with exactly one output. Instead of y, it is typical to name functions f(x) or g(x).

We must look at the value of x to determine which equation to take into account. In the first equation, we will substitute x if it is negative; in the second equation, we will substitute x if it is positive or null.

(a) x = -4 so x is negative.

We use the first equation f(x) = 5x + 7 and we have f(-4) = 5 × (-4) + 7 = -13

(b) x = 2 and is positive.

We use the second equation f(x) = 7x + 8.

The result is f(2) =7 × (2) + 8 = 22

(c) x = 0 In this case the function is defined by the second equation f(x) = 7x + 8. So f(0) =7 × (0) + 8 = 8

(d) We need to calculate the function values of each one and then make the sum.

With f(-100), x = -100 and is negative

We use the first equation f(x) = 5x + 7 and

we have f(-100) = 5 × (-100) + 7 = -493.

With f(00), x = 100 is positive so we use the second equation f(x) = 7x + 8 and get f(100) = 7 × 100 + 8 = 708

We add them to get the result: f(-100) + f(100) = -493 + 708 = 215

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The complete question is:

The function below is defined by two equations. The equation in the first row gives the output for negative numbers in the domain. The equation in the second row gives the output for​ non-negative numbers in the domain. Find the indicated function values.

f (x) = { 5x+7 if x < 0

{ 7x+8 if x ≥ 0

(a) f (- 4)

(b) f (2)

(c) f (0)

(d) f (-100) + f(100)

If m and mzABD = (4x + 14)°. Find the
measurements of CBD and

Answers

The measure of the angle ABC and angle CBD are 48 and 42 degrees

How to determine the measure of the angles

As a general rule:

Complementary angles add up to 90 degrees

This means that

we get: ∡ABC + ∡CBD = 90

3x + 6 + 4x - 14 = 90 ------ Substituting 3x + 6 and 4x - 14 for ∡s ABC and CBD

Evaluate the like terms

7x = 98

Divide both sides by 7

x = 14

So, we have

Measure of ∡ABC: 3 * 14 + 6 = 48

Measure of ∡CBD:  4 * 14 - 14 = 42

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Complete question

Find the measure of each angle

angle ABC and angle CBD are complementary angles, m angle ABC=(3x+6)degrees, and m angle CBD=(4x-14)degrees

find the domain (15 points)

Answers

The domain of the relationship for this problem is given as follows:

Real values of x and y, except y ≠ 0 and x ≠ y.

How to obtain the domain of the relationship?

The domain of a relationship is composed by the set of all possible input values assumed by the relationship.

The relationship for this problem is given as follows:

(4x - 4y)/(2xy + 2y²).

It is a fraction, hence the restriction is that the denominator cannot be zero.

Then the domain is obtained as follows:

2xy + 2y² ≠ 0.

2y(x + y) ≠ 0.

Hence the restrictions are given as follows:

y ≠ 0.x ≠ y.

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as you walk into your next exam, you notice that everyone is sitting on the floor. you sit on the floor, too. what kind of norm did you follow? Question 4In data ethics, consent gives an individual the right to know the answers to which of the following questions? Select all that apply.O Why is my data being collected?O How long will my data be stored?O Why am I being forced to share my data?O How will my data be used? It takes ordinary people to set widespread change in motion. why do i disagree? Help me out please :) The ________ is the number of channel levels, from raw materials to final product and distribution, in which a company will participate. A) industry sphereB) vertical sphereC) product/application sphereD) competence sphereE) market segment sphere on june 1 of the current year, a company entered into a real estate lease agreement for a new building. the lease is an operating lease and is fully executed on that day. according to the terms of the lease, payments of $28,900 per month are scheduled to begin on october 1 of the current year and to continue each month thereafter for a total of 56 months. the lease term spans five years. the company has a calendar year end. what amount is the company's lease expense for the current calendar year? What are five resources that the body requires from foods? imagine that a designer writes content for their online portfolio. to align with their personal brand, they include friendly, conversational language. they write brief and snappy descriptions, and include key details about their professional background. before they publish, what can they do to ensure the content is as good as it can be? Help me please!!!!!!! Create a file called arrayDemo.html. This file should contain a form that has both a reset button and submit button. You should have inputs for: number of rows, number of columns, min random value, and max random value. These values should be passed to the file you must create in step 2.Create a file called arrayDemo.phpThis file should have php code embedded inside of html code such that the server will return an html file (dynamically created) to the browser (client).Your php code should do the followingFill a 2D array with the correct number of rows and columns (from part 1) between the values specified in part 1.Print the values of the array in a TableProcess the data in the array in the following manner. Create a 2nd table and print the following information. Make sure to label data with proper column headers:The sum of each row of dataThe average of each row of dataThe standard deviation of each row of data (https://www.mathsisfun.com/data/standard-deviation-formulas.html) (you can use an excel spreadsheet to easily calculate standard deviation to check your calculation).Process the data in the following manner. Create a 3rd table and print the following information. For a given row of data, print 2 rows in your tableIn the first row print the original value from your 2D arrayIn the following row, print the string "positive" if the value is > 0, or the string "negative" if the element is < 0, or "zero" if the element == 0You must make usage of the number_format() function to limit your decimal places to 3 where appropriate.Make sure that the html page generated by your PHP file includes a link back to arrayDemo.html iron has a density of 7.86 g/cm3 . Calculate the volume (in dL ) of a piece of iron having a mass of 4.62 kg . Note that the density is provided in different units of volume and mass than the desired units of volume ( dL ) and the given units of mass ( kg ). You will need to express the density in kg/dL ( 1 cm3 = 1 mL ) before calculating the volume for the piece of iron. which of the following is not a type of perceptual schema that allows us to organize the raw data we have selected? please help im so bad at geometry HELP ME PLEASEHOW TO DO MY HOMEWORK! Which sentence is punctuated correctly? A. My teammatess names are Trevon, James and Tammy. B. My teammates names are Trevon, James and Tammy. C. My teammates names are Trevon, James and Tammy. D. My teammates names are Trevon, James and Tammy. A hockey player scores 27 goals over a 22 game season. State the goals per game for this situation and round your answer to the nearest tenth if necessary. After the protein completes translation, it has to be folded into the correct shape. Describe this process and why it is important. The crossword clue Play about love and heartbreak in ancient Greece [1605, 431 B.C.] with 21 letters was last seen on the January 15, 2023. We think the likely answer to this clue is AMIDSUMMERNIGHTSDREAM. Pleaseeee help meeee hearing the instruments of the orchestra: identifying a single instrument by now, you have heard all of the principal instruments of the western symphony orchestra. now it is time to test your ability to identify these instruments.