mathe help needed easy graphing

Answer:

(y - 5) = 1/4 (x - 8)

Step-by-step explanation:

Point-slope form is written in the form:

(y - y) = m (x - x)

Where the two y's and two x's are from the points, and m is the slope. To write the equation, you'd plug your points into the equation and solve for m, the slope.

(1 - 5) = m (-8 - 8)

-4 = m (-16)

m = 4/16 = 1/4

Plug m into the point-slope form equation as well as one of your points, and you have an equation.

Answer:

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Step-by-step explanation:

From the 2 column proof below, we have been able to prove the congruent triangles that ΔABC ≅ ΔCDA.

We will use a two column proof to prove that ΔABC ≅ ΔCDA.

Statement 1; AD ≅ BC

Reason 1; Given

Statement 2; AD ║ BC      

Reason 2; Given

Statement 3; AC ≅ AC  

Reason 3; Reflexive Property of congruence

Statement 4; ∠DAC ≅ ∠ACB

Reason 4; If 2 parallel lines are cut by a transversal, the alternate interior angles are congruent.

Statement 5; ΔABC ≅ ΔCDA                    

Reason 5; Side Angle Side(SAS) Congruence  Postulate

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In 11.71 years the amount will double to the principal amount

The interest charged on a loan or deposit is known as compound interest. It is the idea that we use the most frequently on a daily basis. Compound interest is calculated for an amount based on both the principal amount and Compounded interest. This is the major distinction between compound and simple interest is this.

The formula  used for

where P = Principal amount

r = Rate of interest in decimal

n = Number of compounds per year  

t = Time period  

Here from the given data,

Principal amount, p = $ 2500

Rate of interest, r = 6% = 6/100 = 0.06

Number of compounds, n = 2    [ ∵ 12/6 = 2 ]

Here we need to find the time period

Let's assume that after 'n' years the amount will be doubled i.e $ 5000

From the given problem,

Amount, A = 2500(1+0.06/2)²ⁿ        

= 2500(1+0.06/2)²ⁿ  

= 2500(1 + 0.03)²ⁿ  

= 2500 (1.03)²ⁿ    

As we assumed after 'n' years the amount is $ 5000

=>  2500 (1.03)²ⁿ   = 5000

=> (1.03)²ⁿ   = 2  

Apply to log on both sides

=> log (1.3)²ⁿ  = log 2

=> 2t log (1.3) = log 2

=> 2t = log 2/ log(1.03)

=> 2t = 0.301029996/(0.0128372247)

[ use calculator for log (1.03) and log 2]

=> 2t = 23.4497722

=> t = 11.7248861  

=> t = 11.71 ≅ 11 years

Therefore,

In 11.71 years the amount will double to the principal amount

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The coordinate of point D and point E will be (x, y) and (-x, y), respectively.

Coordinate geometry is the study of geometry using the points in space. Using this, it is possible to find the distance between the points, the dividing line in the m:n ratio, finding the mid-point of the line, etc.

Let the coordinate of the point D be (x, y).

Point E has a similar y-coordinate as point D. Then the ordinate of the points will be the same.

And the x-direction of point E is something contrary to the x-direction of point D. Then the coordinate of point E will be (-x, y).

The coordinate of point D and point E will be (x, y) and (-x, y), respectively.

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Answer:

Below

Step-by-step explanation:

If congruent then

x = y+5       and

x+3 = 3y          <======sub in the first equation for 'x'

y+5  +3 = 3y

8 = 2y    then   y = 4        x = y+5 = 9

The coordinates of triangle A'B'C' is A'(0, 4), B'(4, 0), C´(8, 8).

What are coordinates?

A coordinate system in geometry is a method for determining the precise location of points or other geometrical objects on a manifold, such as Euclidean space, using one or more numbers, or coordinates.

Here, we have

Triangle ABC is dilated by a factor of 2 with the center of dilation at the origin to form triangle A'B'C'.

A = ( 0,2)

B = (2, 0)

C = (4,4)

After applying dilated by a factor of 2, we get

A' = (0,4)

B' = (4,0)

C' =(8,8)

Hence, the coordinates of triangle A'B'C' is A'(0, 4), B'(4, 0), C´(8, 8).

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Answer:

A represents the mesosphere

The nth term of the quadratic sequence is aₙ = n² + 2n

What is a quadratic sequence?

Finding the nth term rule of a quadratic sequence: The nth term rule of a quadratic sequence can always be written in the form an² + bn + c.

To find this rule, we need to find a, b and c

Given data ,

Let the expression be represented as = A

Now , the value of A is

A = 3 , 8 , 15 , 24 , 35 ..

Now , taking the difference of the second term and first term , we get

d₁ = 8 - 3 = 5

d₂ = 15 - 8 = 7

d₃ = 24 - 15 = 9

So , the difference of the numbers in the sequence is odd multiples

Therefore , the sequence goes in the multiples of ( n + 2 )

Now , when n = 1

a₁ = 3

when n = 2

a₂ = 8

So , a₂ = n ( n + 2 )

substituting the value for n = 2 , we get

a₂ = 2 ( 2 + 2 )

a₂ = 2 x 4

a₂ = 8

when n = 3

a₃ = 15

So , a₃ = n ( n + 2 )

substituting the value for n = 3 , we get

a₃ = 3 ( 3 + 2 )

a₃ = 3 x 5

a₃ = 15

Therefore , the nth term of the quadratic sequence will be

aₙ = n ( n + 2 )

aₙ = n² + 2n

Therefore , the sequence is aₙ = n² + 2n

Hence , The nth term of the quadratic sequence is aₙ = n² + 2n

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The value of x for which the equation satisfies  is -10/3 .

What is an equation?

In arithmetic, an equation may be a formula that expresses the equality of 2 expressions, by connecting them with the sign =

Main Body:

According to the question:

y = 2

and ,

y = 3/5 x+4

to solve the equation , we need to substitute the value of y in other equation.

2 = 3/5 x +4

now take like terms to one side for solving,

2 - 4 = 3/5 x

   -2 = 3/5 x

multiplying by 5 on both sides,

-2 *5 = (3/5)*5x

  -10 = 3 x

     x = -10/3

Hence the value of x is -10/3.

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The range for the given function, with x=1 is 10.

The given function is f(x)=10x.

The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain.

Here, put x=1 in the function y=10x, we get

y=10(1)

y=10

So, the range for the given x=1 is y=10.

Therefore, the range for the given function, with x=1 is 10.

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The vertex of the function is located at coordinates (119, 0).

[tex]f(z)= 2z^{2}+82+37\\ \\f(z)= 2z^{2}+119[/tex]

Check the attached image.

[tex]\frac{d}{dz} (2z^{2}+119)\\ \\f'(z)=2*2z^{2-1}\\ \\f'(z)=4z[/tex]

[tex]f'(z)=4z\\ \\4z=0\\ \\z=0[/tex]

[tex]f(0)= 2(0)^{2}+119\\ \\f(0)=119[/tex]

The vertex of the function is located at coordinates (0, 119).

Choose the equation that represents this situation.

Use p to represent the price of a phone and t to represent the total cost. An online business adds a $6 shipping fee to the price of each phone it sells.

A. t = 6p

B. t = p + 6

C. p = t + 6

D. t + p = 6​

The value of the expression 2x+3 when x = 3 is 9.

What is linear equation?

A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. Sometimes, the aforementioned is referred to as a "linear equation of two variables," with y and x serving as the variables.

Given linear equation is

x + 2 - 6x = -13

Combine like terms:

(x - 6x) + 2 = -13

-5x + 2 = -13

The additive inverse of 2 is -2.

Add -2 on both sides:

-5x + 2 -2 = -13 -2

-5x = -15

Divide both sides by -5:

-5x/-5 = -15/-5

x = 3

Putting x = 3 in the expression 2x + 3

2x + 3 = (2×3) + 3

2x + 3 =6 + 3

2x + 3 = 9

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Chloe needs to cut 75 centimetres after the unit conversion piece of wood in order to use it for her desk.

What is unit conversion?

Unit conversion is a multi-step process that includes rounding, selecting the appropriate number of significant digits, and multiplying or dividing by a numerical factor.

Given, Chloe needs a 1.25-meter piece of wood

Total available 2-meter piece of wood

So, the extra piece of wood = 2-1.25 = 0.75 meter

Convert meter to centimetres

Then, 1 meter = 100 centimetres

0.75 meter = 0.75*100 centimetres = 75 centimetres

Hence, she needs to cut 75 centimetres piece of wood.

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The correct option for the errors made by Sabina are-

For the stated expression-

3x³ + x + 2 by when divided by (x + 2) by the long division method, the following is the quotient.

         _____________

x + 2 )    3x³ + x + 2      ( 3x² - 6x + 7

           -   3x³ - 6x²  

           __________

              - 6x²  + x + 2

             + 6x²  + 6x

           ____________

                       7x + 2

                     -7x   - 16

                  __________

                            - 14

                  ___________

Thus, the correct quotient for the polynomial is 3x² - 6x + 7.

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The model's length 1.4.To do this, I'm going to put up a proportion. This time period is excessively long when compared to how long it takes to whip.

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Answer:

okey baik dan sangat bagus

The quantity that provides the best measure of the safety of drivers is A. the number of accidents per year.

Insurance is a risk management tool. When you purchase insurance, you are purchasing protection against unforeseen financial losses. If something bad happens to you, the insurance company will pay you or someone you choose. If you do not have insurance and an accident occurs, you may be held liable for all associated costs.

Insurance is a risk management tool. When you purchase insurance, you are purchasing protection against unforeseen financial losses. If something bad happens to you, the insurance company will pay you or someone you choose. If you do not have insurance and an accident occurs, you may be held liable for all associated costs.

In this case, the number of accidents will be a factor to illustrate the safety.

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Jenny has 6 marshmallows in her hot chocolate and Julie has 0 marshmallows in her hot chocolate

From the question, we are to determine the number of marshmallows Jenny and Julie each have in their hot chocolate

From the given information,

"Jenny put 6 more marshmallows in her cup than Julie"

Then, we can write that

x - y = 6  ---------- (1)

Also,

"Together Jenny and Julie had a total of 6 marshmallows"

That is,

x + y = 6 ---------- (2)

Add equations (1) and (2) together

   x - y = 6

+ [x + y = 6

--------------------

2x = 12

x = 12/2

x = 6

Substitute the value of x into equation (2)

x + y = 6

6 + y = 6

y = 6 - 6

y = 0

Hence, Jenny has 6 and Julie has 0

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Answer:

I believe it is A

Step-by-step explanation:

Just go backwards. translations on a graph are pretty simple once you understand left vs right and up vs down.

The required translation to move the image back to the original position is 3 units right and 3 units down. Option A is correct.

Coordinate, is represented as the values on the x-axis and y-axis of the graph. while the coordinate x is called abscissa and the coordinate of the y is called ordinate.

The translation processes in geometry enable the shift of figures from one location to other.

Here,
The given translation is ,
a figure is translated 3 units left and 3 units up,
(x' , y') ⇒ (x - 3 , y + 3 )

To shift back the image,
x' = x - 3  ⇒ x = x' + 3
y' = y + 3 ⇒ y = y' -3

Thus, the required translation to move the image back to the original position is 3 units right and 3 units down. Option A is correct.

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Answer:

12

Step-by-step explanation:

Pythag

The required probability for purchasing more than one costume is 0.03.

Probability is the branch of Mathematics that deals with the measurement of the chance of occurrence of a random event.

The probability of any event always lies in the close interval of 0 and 1 [0,1].

The zero value of probability indicates that the event will not happen while its value equal to one indicate that it will happen.

The given problem can be solved as follows,

The number of visitors purchasing no costume, exactly one and more than one costumes are given as 81, 6 and 3 respectively.

Then, the total number is 81 + 6 + 3 = 90

Now, the probability of purchasing more than one costume is given as,

P(More than one costume) = 3/90

                                            =  1/30

                                            = 0.03

Hence, probability that the next person will purchase more than one costume is 0.03.

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When the level of confidence interval increases from 96% to 99% then the population mean will also become wider for a given fixed value of standard deviation and its fixed sample size, so the given statement is true.

As given in the question,

Let us consider 'σ' be the fixed standard deviation

And 'n' be the fixed sample size

Population mean = [tex]\bar{x}[/tex] ± z ( σ /√n )

Range of confidence interval increases from 96% to 99%

For a fixed standard deviation and sample size range of population mean become wider .

For fixed [tex]\bar{x}[/tex] , standard deviation 'σ' , and sample size 'n' the value of population mean get varied as per the change in confidence interval z-score.

Therefore, the given statement when level of confidence interval increases from 96% to 99% then population mean will get wider is a true statement.

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Length of diagonal WY is 13.03 units

What is Distance Formula?

Distance between two points is the length of the line segment that connects the two points in a plane.

The formula to find the distance between the two points is usually given by d=√((x2 – x1)² + (y2 – y1)²).

This formula is used to find the distance between any two points on a coordinate plane or x-y plane.

According to the given question:

WXYZ is a rectangle and diagonals of a rectangle are equal in length

Coordinates of W = (-4,5) and Y = (3,-6)

To find the length of diagonal WY, we need to find distance between points W and Y.

Using distance formula to find WY

= √((3 – (-4))² + (-6 – 5)²)

= √170

= 13.03 units

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We want to study the population formula of a given US state according to exponential equation.

a) 23.1 millions.

b) in 2013 - 2014

What is exponential equation?

The exponential function may be a function denoted by f(x)=\exp or e^. Unless otherwise fixed, the term usually refers to the positive-valued operate of a true variable

Main body:

The population state is:

A = 23.1*e^(0.0153*t)

In millions.

Where t represents the number of years after 2000.

a) For the population at the year 2000, we need to evaluate the function at t = 0 (2000 is 0 years after 2000).

A(0) = 23.1*e^(0.0153*0) = 23.1

The population at year 2000 was 23.1 millions.

b) Now we want to solve:

A(t) = 28.3 = 23.1*e^(0.0153*t)

        28.3/23.1 = e^(0.0153*t)

       1.23 = e^(0.0153*t)

Now we can apply the natural logarithm to both sides:

ln(1.23) = ln( e^(0.0153*t) )

ln(1.23) = 0.0153*t

ln(1.23)/0.0153 = t = 13.5

Hence, 13.5 years after 2000 the population will be 28.3 million.

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The length of segment QR is 8 units.

What is the mid-point segment of the triangle?

The midpoint of a line segment is known as the midpoint in geometry. It is the centroid of the segment and of the ends, and it is equally distant from both of them. It cuts the section in half.

We have,

In ΔWUV

UV = 16 units

A line segment that connects two midpoints of the sides of a triangle is called a midsegment.

Mid-point segment of the triangle:

QR = 1/2(UV)         .............(1)

QR = 1/2(16)

QR = 8

Hence, the length of segment QR is 8 units.

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