85 POINTS!!! Just please help.

85 POINTS!!! Just Please Help.

Answers

Answer 1

Answer:

c

Step-by-step explanation:


Related Questions

How do you identify a quadrilateral?

Answers

We can identify quadrilateral because a regular polygon must have four equal sides in order to be called a quadrilateral.

Describe the quadrilateral.

Having four sides, four vertices, and four angles, a closed quadrilateral is a type of polygon. It consists of four connected non-collinear points. Quadrilaterals' internal angles always add up to 360 degrees.

According to the given question:

In a quadrilateral -

Four vertices make up each of them.Four sides comprise each side.All interior angles add up to 360 degrees.There are 2 diagonals.Both regular and irregular quadrilaterals exist.

In order to be considered a quadrilateral, it must have four sides, four angles.

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Multiply pls
a
1. (a + b)(a + b) =
2. (3a-2b) (3a - 2b) =
3. (x - 4y)(-3x - 2y) =
4.(-y-2z)(y-2z) =

Answers

Answer: FOIL method

1. (a + b)(a + b) =

= a² + ab + b² + ab

= a² + 2ab + b²

2. (3a-2b) (3a - 2b) =

= 9a² - 6ab - 6ab + 4b²

= 9a² -12ab + 4b²

3. (x - 4y)(-3x - 2y) =

= -3x² -2xy +12xy +8y²

= -3x² + 10xy + 8y²

4.(-y-2z)(y-2z) =

= -y² + 2yz -2yz + 4z²

= -y² + 4z²

Step-by-step explanation:

heart and star pls <3 brainliest will be appreciated <3(っ◔◡◔)っ  -{ elyna s }-

Find the total surface area of the cone in the figure. (Use π = 3.14.)


A) 282.6 cm^2

B) 219.8 cm^2

C) 266.9 cm^2

D) 314.0 cm^2

Answers

The total surface area of the cone is calculated to be

A) 282.6 cm²

How to find the total surface area of the cone

Information given in the problem

the total surface area of the cone in the figure. (Use π = 3.14.)

A cone is a three-dimensional geometric structure with a smooth transition from a flat, usually circular base to the apex or vertex, a point that creates an axis to the base's center.

The formula of the total surface are of a cone is given by

T = πr(r + l) square units.

calculating for l

l = √(12² + 5²) = 13

= 3.14 * 5 (5 + 13)

= 3.14 * 5 *(18)

= 282.6 cm^2

282.6 cm^2 is the  total surface area of the cone

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the ratio 800g:1kg can be written in a form 1:n find out the value of n

Answers

If 800g:1kg is equal to 1:n then the value of n is 1/8.

What is a ratio?

The ratio shows how many times one value is contained in another value.

Example:

There are 3 apples and 2 oranges in a basket.

The ratio of apples to oranges is 3:2 or 3/2.

We have,

800g : 1kg = 1 : n

This can be written as,

800g/1kg = 1/n

Cross multiply.

n = 1kg/800g

[ 1 kg = 1000g ]

n = 1000g/8000g

n = 1/8

Thus,

The value of n is 1/8.

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What is the slope if it is perpendicular?

Answers

The slope if it is perpendicular is [tex]-\frac{1}{m}[/tex].

What is slope ?

The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x).

What is perpendicular ?

The word perpendicular means at right angles and this is because when two lines meet, they form right angles. Perpendicular lines can face in any direction such as up and down, crossways, and side-to-side.

Let y = 3x + 1 is perpendicular ,

differentiate respect of x

[tex]\frac{dy}{dx} = 3[/tex] , m = 3

Thus , [tex]-\frac{1}{m}[/tex]

then [tex]-\frac{1}{3}[/tex]

The slope if it is perpendicular is [tex]-\frac{1}{m}[/tex].

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Please help and give a great answer get u brainlist

Answers

Answer:

7.62

Step-by-step explanation:

Simplify the following:

7 + 6/10 + 2/100

Express 6/10 in its lowest form by cancelling out gcd(6, 10) = 2 from the numerator and denominator. 6/10 = (2×3)/(2×5) = 3/5:

7 + 3/5 + 2/100

Express 2/100 in its lowest form by cancelling out gcd(2, 100) = 2 from the numerator and denominator. 2/100 = (2×1)/(2×50) = 1/50:

7 + 3/5 + 1/50

Put 7 + 3/5 + 1/50 over the common denominator 50. 7 + 3/5 + 1/50 = (50×7)/50 + (10×3)/50 + 1/50:

(50×7)/50 + (10×3)/50 + 1/50

50×7 = 350:

350/50 + (10×3)/50 + 1/50

10×3 = 30:

350/50 + 30/50 + 1/50

350/50 + 30/50 + 1/50 = (350 + 30 + 1)/50:

(350 + 30 + 1)/50

| 3 | 5 | 0

| | 3 | 0

+ | | | 1

| 3 | 8 | 1:

Answer: |

| 381/50

Is longitude equidistant?

Answers

Latitude lines always have an equal distance between them, however longitude lines are separated from one another at the equator and come together at the poles. Longitude and latitude lines near the equator are equal in distance, with one degree covering 111 kilometers (69 miles).

Latitude lines are always equally spaced apart because they are always parallel to one another. Never do latitude lines converge or intersect. Distances north or south of the equator are measured by lines of latitude.

How do longitudes work?

Distance east or west of the prime meridian is measured by longitude. Meridians, which are also known as lines of longitude, are fictitious lines that divide the globe. They measure the distance either east or west, running from pole to pole from north to south. The units of longitude are degrees, minutes, and seconds.

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reasoning suppose le ol i and fe o gi. what else must you know in order to prove kfde and kghi are congruent by asa? by aas?

Answers

In order to prove that KFDE and KGHI are congruent by ASA, you need to know that KFDE and KGHI have two congruent angles (angle F and angle H) and a congruent side (side DE and side HI).

In order to prove that KFDE and KGHI are congruent by AAS, you need to know that KFDE and KGHI have three congruent angles (angle F, angle G, and angle H). This means that the angles in the triangle are equal, which implies that the sides in the triangle are also equal. Thus, for AAS, KFDE and KGHI must have two congruent sides (side DE and side HI).

Therefore, in order to prove that KFDE and KGHI are congruent by ASA or AAS, you must know that both triangles have two congruent angles and a congruent side (for ASA) or three congruent angles and two congruent sides (for AAS).

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A woman put $580 into a savings account for one year. The rate of interest on the account was 6.5%. How much was the interest for the vear in dollars and cents? (Round to the nearest cent)

Answers

Answer:

580-80=500×6.5=3250 its ans iit

these are the fees for sending a package by media mail: $\bullet$ $\$2.41$ for the first pound $\bullet$ $\$0.41$ per additional pound for the next six pounds $\bullet$ $\$0.39$ per additional pound after that for example, a two-pound package costs $\$2.82$ to send by media mail. if a package full of books costs $\$7.99$ to send by media mail, how many pounds does the package weigh?

Answers

The weight of the package is 15 pound.

What is an linear equation?

The equation for a linear equation in one variable is written as ax+b = 0, where a and b are two integers, and x is a variable. This equation has only one solution. For instance, the linear equation 2x+3=8 only has one variable.

Given that the fees for sending a package by media mail

For first pound : $2.41

For the next six pounds: $0.41 per pound

For additional pound: $0.39 per pound

The cost of first 7 pounds is = $(2.41 + (0.41 × 6)) =$4.87

$4.87 < $7.99. Thus the weight of the package is more than 7 pounds

Assume that, the weight of the package is (7 + x) pound.

The fee for (7 + x) pounds package is $(4.87 + 0.39x)

According to the question:

4.87 + 0.39x = 7.99

Subtract 4.87 from both sides:

0.39x = 3.12

Divide both sides by 0.39

x = 8

The weight of the package is (8 + 7) = 15 pounds.

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If quadrilateral ABCD is rotated 90° clockwise about point A and then reflected across the y-axis to create quadrilateral A’B’C’D’, what will be the coordinate of D’?

Answers

According to the 90° clockwise rotation, the new coordinate of the quadrilateral D' is (3, -2)

Quadrilateral

Quadrilateral refers a closed shape and a type of polygon that has four sides, four vertices and four angles.

If quadrilateral ABCD is rotated 90° clockwise about point A and then reflected across the y-axis to create quadrilateral A’B’C’D’.

Here we need to find the coordinate of D'.

In order to find the new coordinates, first we have to identify the current coordinates of the quadrilateral.

While we looking into the graph, we have identify the point of

A (0,0), B(-4, 3), C(1,5) and D(2,3)

Now, we have to use the rule of clockwise 90° rotation, states that to rotate the figure 90 degrees clockwise about a point, every point(x , y) will rotate to (y, -x).

According to this rule, the new coordinates are written as,

A(0,0) = A'(0,0)

B'(-4,3) = B'(-3,-4)

C(1,5) = C'(5, -1)

D(2,3) = D' (3, -2)

Therefore, the new coordinate of D' is (3, -2).

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What will be the nature of roots of quadratic equation 2x2 4x 7?

Answers

The roots of the quadratic equation 2x2 4x 7 will be two complex conjugate roots.

To determine the nature of roots of a quadratic equation, we can use the formula of the discriminant. The discriminant of a quadratic equation ax2 + bx + c = 0 is given by D = b2 - 4ac.

For the equation 2x2 4x 7, the discriminant is D = (-4)2 - 4(2)(7) = 16 - 56 = -40.

Since the discriminant is negative, the roots will be two complex conjugate roots.

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The mass of one methane (natural gas) molecule is 2.7x10^-23 grams. Find the mass of
60,000 methane molecures in grams.

Answers

The mass of 60,000 molecules of methane is 1.62 × 10⁻¹⁸ g

what is mass of molecule ?

Watch your pronunciation. pronounced "muh-LEH-kyoo-ler mas" the total atomic mass of every atom in a molecule, calculated using a scale with hydrogen, carbon, nitrogen, and oxygen having atomic masses of 1, 12, 14, and 16, respectively.

solution:

The mass of one methane molecule should be "2.7 × 10⁻²³ gram" instead of "27 × 10⁻³ grams".

Mass of 60,000 molecules of methane

= (2.7 × 10⁻²³ g) × 60,000

= 1.62 × 10⁻¹⁸ g

Therefore,The mass of 60,000 molecules of methane is 1.62 × 10⁻¹⁸ g

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What is postulate and theorem?

Answers

A postulate is an unsupported assertion that is taken to be true. A provable true assertion is referred to as a theorem.

What is meant by postulate ?A claim that is accepted as true without evidence, also referred to as an axiom. For instance, Euclid's postulates, a set of five postulates, provide the foundation of all of Euclidean geometry. An unsupported assertion is referred to as a postulate. A postulate is also referred to as an axiom. For instance, you would believe Pam if she claimed that all of her siblings are at least five foot one tall if you knew that she is five feet tall and that all of her siblings are taller than her. A postulate is an unsupported assertion that is taken to be true. A provable true assertion is referred to as a theorem.

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Which binomial is a factor of f/x )= x³ 6x² +3x 10?

Answers

Factor (x+1) is the binomial factor for x³ - 6x²+ 3x + 10 using the rational roots test.

If a polynomial function has integer coefficients, then every rational zero will have the form p/q where p is a factor of the constant and q is a factor of the leading coefficient.

p = ±1,  ±10, ±2, ±5

q = ±1

Find every combination of ± p/q . These are the possible roots of the polynomial function.

±1, ±10, ±2, ±5

Substitute −1 and simplify the expression. In this case, the expression is equal to 0 so −1 is a root of the polynomial.

Substitute: −1 into the polynomial.

(−1)3−6(−1)2+3⋅(−1)+10

Raise −1 to the power of 3.−1−6(−1)2+3⋅−1+10

Raise −1 to the power of 2.−1 −6⋅1 + 3⋅−1+ 10

Multiply −6 by 1.−1−6+3⋅−1+10

Subtract 6 from −1.−7+3⋅−1+10

Multiply 3 by −1.−7−310

Subtract 3 from −7.−10+10

Add −10 and 10.0Since −1 is a known root, divide the polynomial by x+1 to find the quotient polynomial. This polynomial can then be used to find the remaining roots.

x³− 6x²+ 3x+ 10x+ 1

Divide

x³−6x²+ 3x+ 10 by x + 1.

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Is rigid motion congruent?

Answers

Yes, rigid motion is congruent?

What is rigid motion congruency?

A stiff motion occurs when an object is transported from one place to another while maintaining its original size and shape.

If and only if there is a stiff motion that establishes a correspondence of one figure as the likeness of the other, then two figures are said to be congruent. Interior angles are unchanged, as well as side lengths.

An object is rigidly moved from its initial place to the exact same location in a motion known as an identity motion. It appears as though the thing hasn't changed at all.

According to the Common Core, the "principle of superposition" states that two figures are congruent if there is a rigid motion projecting one onto the other.

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Sandra et the cruie control in her car to 69 mile per hour when he goe on road trip. Which equation can be ued to find how many hour, h, it will take her to drive m mile at her contant peed?
A. B. C. D

Answers

Sandra sets the speed to 69 miles per hour. The equation that express how many hours it will take her to drive m miles is: h = m/69.

Speed or velocity 69 miles per hour means: in 1 hour she will travel 69 miles

69 miles need 1 hour

1 miles need 1/69 hours

m miles need m x 1/69 hours.

If h is the amount of time need to take her to drive m miles, then:

h = m x 1/69 = m/69 hours

We can also solve the problem, using formula:

s = vt

Where:

s = distance

v = speed = 69 mph

t = time

In the given problem, the distance is m, hence s = m, and t = h

Hence,

t = s/v

h = m/69

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What does discontinuity mean?

Answers

In mathematics, a discontinuity is a point or set of points at which a function or curve is not defined, or is not "well-behaved," meaning it exhibits some kind of sudden or unexpected change in behavior.

What does discontinuity mean?

Discontinuities can occur in functions or curves of all types, including functions of one variable, functions of several variables, and geometric curves.

There are several types of discontinuities that can occur in a function. For example, a function may have a jump discontinuity, which occurs when the function has a finite limit from one side but a different finite limit from the other side at a given point.

In all, the presence of discontinuities in a function can make it more difficult to analyze or work with, as the behavior of the function may not be predictable at these points.

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Least common multiple of 5y^2-45 and y+3

Answers

The common multiple of 5y²- 45 and y + 3 is (y + 3).

What is meant by common multiple?

For any two or more expressions, if any one of their factors is common in all of them, then that factor is said to be the common multiple of those expressions.

Calculation:

The given expressions are 5y²- 45 and y + 3

On factorizing them, we get

5y²- 45 = 5(y² - 9)

⇒ 5(y² - 3²)

From he binomial formula a² - b² = (a + b)(a - b), we can write

5y²- 45 = 5(y + 3)(y - 3)

Now, the second expression has no further simplification. The expression is itself a factor for it.

So, we can write their factors as

5y²- 45 = 5 × (y + 3) × (y - 3)

y - 3 = 1 × (y - 3)

From this, (y - 3) is the only factor that is a common factor for both the expression.

So, (y - 3) is the common multiple for the given expressions.

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Why binomial theorem is used?

Answers

Binomial theorem is used to calculate the roots of the equations with highest degree in advance mathematical calculation in any subject.

Binomial theorem is represented by :

( a + b )ⁿ = ⁿC₀aⁿb⁰ +  ⁿC₁aⁿ⁻¹b¹ + ⁿC₂aⁿ⁻²b² +..............+  ⁿCₙa⁰bⁿ

When the value of n is higher it helps us to calculate the value of the given expression easily and accurately.I t helps us to calculate the roots of the equation with higher degree in advance mathematics.It also help us to prove many mathematical and Physics equations.It help us to determine the Weather forecast , in architecture calculations , and cost estimation in many engineering projects.

Therefore, the binomial theorem help us to calculate the roots of the equations with highest degree in advance mathematical calculations in many subjects.

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If sally has 29 apples but then bob takes 1 apple how many apples does sally have left?

Answers

Answer:

28 apples

Step-by-step explanation:

29 - 1 = 28 apples

Answer:

28apples

Step-by-step explanation:

simple:29-1

hope this helps

The base of a triangular prism is a right triangle with a base of 20 feet and a height of 120 inches. The height of the prism is 5 feet. What is the volume of the prism, in cubic feet? Enter your answer as a number, like this: 42 Do not enter units.

Answers

750 cubic feet is the volume of the prism and Therefore, the volume of Jake's box is 8 times larger than Havana's box.

What are a right triangle's three sides?

A right right triangle hypotenuse is its longest side, its "across" side is the one that faces a certain angle, and its "adjacent" side is the one that faces the angle in question. To describe both sides of right triangles, we utilize specific terminology. The side opposing its right angle is always the tangent of a right triangle.

Briefing:

Dimensions of the Right Triangular Base

Base = 20 feet

Height= 120 inches = 10 feet

Base Area of the Prism

1/2 * 20 * 10

= 150 sq.feet

Height of the Prism = 5 feet

Volume of the Prism = Base Area X Height

= 150 X 5

=750 cubic feet

Jake's Box

Length: 12 inches

Width: 4 inches

Height: 8 inches

Volume = 12 X 4 X 8 =384 cubic inches

Havana's box

Jake's shipment crate is comparable to the one in Havana, except it is only half as long overall.

Therefore:

Length: 12/2=6 inches

Width: 4/2=2 inches

Height: 8/2=4 inches

Volume = 6 X 2 X 4 =48 cubic inches

Now:

384/48=8

Therefore, Jake's box has an 8-times higher volume than Havana's box.

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Select all the expressions which are equivalent to –4/3p – 2/5.
–4/3p + 2/5
–2/5 – 4/3p
4/3p – 2/5
–4/3p + (−2/5)
2/5 + 4/3p

Answers

A collection of numbers, variables, and mathematical operations is referred to as an expression. The  expression is -2/5- 4/3P and 2/5+4/3P

What is meant by expression ?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation .A collection of numbers, variables, and mathematical operations is referred to as an expression.

Given,

-4/3p - 2/5

= -20p - 6/15

= 2(10 p +3)/15

A mathematical expression is a sentence that includes numbers, variables, or both. The equal symbol is never used in expressions. Here are a few phrases as examples. A mathematical statement stating the equality of two expressions is known as an equation.

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what is the equation of a line perpendicular to y = 2x - 6 that passes through (5, 4)
(use y = m x + b)
(must solve for y to get slope)

Answers

The equation of the perpendicular line is y = -0.5x + 6.5

How to determine the perpendicular line equation?

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

y = 2x - 6

Also, from the question;

We have the following points

Point = (5, 4) i.e.  (x, y) = (5, 4)

The equation of a line can be represented as

y = mx + c

Where

Slope = m

By comparing the equations, we have the following

m = 2

This means that the slope is 2

The slopes of perpendicular lines are opposite reciprocals

This means that the slope of the other line is -1/2

The equation of the line is then calculated as

y = m(x - x₁) +y₁

Where

m = -1/2

(x₁, y₁) = (5, 4)

So, we have

y = -1/2(x - 5) + 4

Evaluate

y = -0.5x + 6.5

Hence, the line has an equation of y = -0.5x + 6.5

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What to numbers can equal 16?

Answers

1, 2, 4, 8, and 16 are the components that make up 16. Similarly, the negative components of 16 are -1, -2, -4, -8, and -16. factors of 16: 1, 2, 4, 8, and 16.

What two numbers make 16?

The natural number 16 (or sixteen) comes after the number 15 and before the number 17. Since 42 = 4 4 is a square number, the number 16 is both a composite and a square. It has precisely five correct divisors, making it the lowest number. These are 1, 2, 4, and 8. The numbers 16 and 60 sound remarkably similar in English speech, which might lead to confusion.

There are three factor pairs of 16:

1 × 16 = 16.

2 × 8 = 16.

4 × 4 = 16.

1, 2, 4, 8, and 16 are the 16 factors. Likewise, the unfavorable factors of 16 are -1, -2, -4, -8, and -16. 1, 2, 4, 8, and 16 make up the number 16.

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How many terms are there in the expression x³ 4x² 7x − 2 *?

Answers

There are totally 4 terms in the given polynomial

We have a polynomial given by -x³+4x² +7x − 2

Algebraic expressions with coefficients and variables make up polynomials. Occasionally, variables are referred to as indeterminates. For polynomial expressions, addition, subtraction, multiplication, and positive integer exponents are all possible; however, division by variable is not. x2+x-12 is an illustration of a single-variable polynomial. Three terms are involved in this example: x2, x, and -12.

Since there are 4 terms with either an addition or a subtraction performed between them, the total number of terms is given by 4.

Those 4 terms are -x³ ,4x²,7x,−2

Therefore, there are totally 4 terms in the given polynomial.

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Part A Find the y-intercept and slope of the line. ​

Answers

Answer:

y-intercept = (0,6)

slope = -2

Step-by-step explanation:

What is the slope of a line?

The slope of a line is how steep the line is

How can we find the slope of a line?

Use the formula: [tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex]m = the slope[tex](x_1,y_1)[/tex] is one of the coordinates of the given line[tex](x_2, y_2)[/tex] is another coordinate of the given line

To find the slope, pick two coordinates you see on the line, substitute them into the slope formula, and solve for the slope!

I am choosing the coordinates (0,6) and (3,0), but you can choose any 2 coordinates that you see on the line.

[tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]m = \frac{0-6}{3-0}\\m = \frac{-6}{3}\\m = -2[/tex]

∴ The slope of the line is -2.

What is the y-intercept of a line?

The y-intercept of a line is the point (0,y) at which the line intersects the y-axis

How do we find the y-intercept of a line?

Look at the graphFind the corresponding y-coordinate for when x=0

When x=0, y=6

∴ The y-intercept of the line is (0,6)

What is the formula for three consecutive odd numbers?

Answers

The formula to determine the consecutive odd numbers of a specific value "x" is:

x + 2n

What are consecutive numbers?

Consecutive numbers are those numerical values that are found just after a specific number or value, for example consecutive numbers from 5 will be 6 onwards.

If we want to know the consecutive numbers immediately we add +1, +2 and so on.

But as we only want the odd numbers we will add +2, +4 and +6, having as a result the following numbers:

x + 2 x + 4 x + 6

If we generalize an equation we have

x + 2n

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plot the distance and time data for distance the train traveled on the grid below. plot the distance on the vertical axis and time on horizontal axis. label the axes and add a title to your plot.
Distance Traveled by Train

Time (h) Distance (km)
0 0
1 110
2 220
3 330
4 400
5 500

Answers

A graph of the distance and time data for distance traveled by this train is shown in the image attached below.

What is a scatter plot?

In Mathematics, a scatter plot is sometimes referred to as scatter chart and it can be defined as a type of graph which is used for the graphical representation of the values of two (2) variables, with the resulting data points showing any association or correlation between the data set.

In this scenario, the time (in hours) would be plotted on the vertical axis (x-axis) of the scatter plot while the distance (in kilometers) would be plotted on the horizontal axis (y-axis) of the scatter plot by using an Excel worksheet.

From the scatter plot (see attachment) which models the relationship between the distance (in kilometers) and time (in hours), a linear equation for the line of best fit or trend line is y = 99.43x + 11.43.

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How is the literal equation y = a( bx + c) similar to the equation for converting °F to °C?
How would you solve this equation for the variable x ?

Answers

ans is 4 I don't really know how to explain it

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