Solve the system of equations x + y = 8; y = x ^ 2 - 4

Solve The System Of Equations X + Y = 8; Y = X ^ 2 - 4

Answers

Answer 1

The solution to the system of equations is (x, y) = (-4, 12) or (3, 5).

What are systems of equations?

simultaneous equations, or system of equations Two or more equations in algebra must be solved concurrently (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a distinct solution. Even then, a solution is not assured.

According to the given information:

We can solve this system of equations by substitution or elimination. Here, we will use substitution:

Substitute y in the first equation with its expression from the second equation:

x + (x^2 - 4) = 8

Now, we have a quadratic equation in x:

x^2 + x - 12 = 0

Factor the quadratic equation:

(x + 4)(x - 3) = 0

So, either x + 4 = 0 or x - 3 = 0:

x = -4 or x = 3

Substitute each value of x into either equation to find the corresponding value of y:

If x = -4, then y = (-4)^2 - 4 = 12

If x = 3, then y = 3^2 - 4 = 5

Therefore, the solution to the system of equations is (x, y) = (-4, 12) or (3, 5).

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Related Questions

how many eggs are in a half dozen​

Answers

Answer:

6

Step-by-step explanation:

We know that a dozen is the value of 12 so to find half a dozen we simply need to half it!

12 ÷ 2 = 6

This means that there are 6 eggs in a half dozen.

FUN FACT:

A baker's dozen is 13, one more than a regular dozen!

Hope this helps, have a lovely day!

Diane deposits $70,000 into an account that pays 3% interest per year, compounded annually. Henry deposits $70,000 into an account that also pays 3% per year. But it is simple interest. Find the interest Diane and Henry earn during each of the first three years. Then decide who earns more interest for each year. Assume there are no withdrawals and no additional deposits.

Answers

Answer:

Step-by-step explanation:

For Diane's account:

Year 1: Interest = $70,000 x 0.03 = $2,100

Year 2: Interest = ($70,000 + $2,100) x 0.03 = $2,163

Year 3: Interest = ($70,000 + $2,100 + $2,163) x 0.03 = $2,227.89

For Henry's account:

Year 1: Interest = $70,000 x 0.03 = $2,100

Year 2: Interest = $70,000 x 0.03 = $2,100

Year 3: Interest = $70,000 x 0.03 = $2,100

For the first year, both Diane and Henry earn the same interest of $2,100. However, for the second and third years, Diane earns more interest than Henry. Therefore, Diane earns more interest for each year after the first year

what are the relation between point and circle ​

Answers

The relation between a point and a circle is relative to the location of the point relative to the circumference of the circle, which can be inside, at the circumference, or outside.

How to describe the relation between a point and a circle?

The relationship between a point and a circle can be described as follows:

A point can be located inside a circle if and only if its distance from the center of the circle is less than the radius of the circle.A point can be located outside a circle if and only if its distance from the center of the circle is greater than the radius of the circle.A point can lie on the circumference of a circle if and only if its distance from the center of the circle is equal to the radius of the circle.

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Martin has a spinner that is divided into four sections labeled A, B, C, and D. He spins the spinner twice. PLEASE ANSWER RIGHT HELP EASY THANK UU
Drag the letter pairs into the boxes to correctly complete the table and show the sample space of Martin's experiment.

Answers

Answer:

going from left to right:

AA

BD

CB

DC

Let f(X)=x-8 and g(X) =4x^2. Perform the function operation and then find the domain of the result. (f-g)(x)

Answers

Answer:

(f - g)(x) = -4x² + x - 8

Step-by-step explanation:

(f - g)(x) = f(x) - g(x)

            = x - 8 - (4x²)

            = -4x² + x - 8

Select the correct answer from each drop-down menu.

Quadrilateral PQRS is
B to quadrilateral JKLM because quadrilateral PQRS is the image of quadrilateral JKLM after translating quadrilateral JKLM
6 units down and 6 units to the right, followed by dilation centered at the origin by a scale factor of
Bare congruent and the corresponding
In the two figures, the corresponding
e are proportional but not equal.
R

Answers

The two transformations applied to quadrilateral JKLM are rigid transformations, quadrilateral PQRS is congruent to quadrilateral JKLM, and the corresponding sides are proportional but not equal.

What is dilation?

The dilation is a transformation in which all points are moved by the same scale factor, but the scale factor is different for each point. In this case, the dilation was centered at the origin and had a scale factor of . This means that all points were moved by the same scale factor of .

Quadrilateral PQRS is the image of quadrilateral JKLM after translating it 6 units down and 6 units to the right, followed by a dilation centered at the origin with a scale factor of . This means that quadrilateral PQRS is congruent to quadrilateral JKLM, and the corresponding sides are proportional but not equal.

In this case, the translation of quadrilateral JKLM was 6 units down and 6 units to the right.

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Amari gathered a random sample of favorite beverages of the students in her class. She calculated data on different variables. For one of the variables that she collected, she constructed a bar graph.

Which of the following variables did she use?

Price of beverage
Type of beverage
The volume of the beverage
Number of ounces in the beverage

Answers

Amari almost likely used "types of beverage" as that of the factor while creating the bar graph.

What are the uses of bar graphs?

The bar graph makes it simple to compare various sets of data across various groups. The connection is depicted using two axes, with the discrete values with one axis and the categories on the other. The graph displays the key alterations in the data over time.

What distinguishes a bar graph from a histogram?

The visual depiction of categorical data is a bar graph. The visual depiction of quantitative data is called a histogram. Every pair of following bars is separated by an equal amount of space.

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Answer:

Type of drink is the answer

Step-by-step explanation:

Find the standard normal area for each of the following(round your answers to 4 decimal places)

Answers

Answer:

  (a) 0.0955

  (b) 0.0214

  (c) 0.9545

  (d) 0.3085

Step-by-step explanation:

You want the area under the standard normal PDF curve for intervals (1.22, 2.15), (2.00, 3.00), (-2.00, 2.00), and (0.50, ∞).

Calculator

The probability functions of a suitable calculator or spreadsheet can find these values for you. The attachment shows one such calculator. Its "normalcdf" function takes as arguments the lower bound and upper bound.

We used 1E99 as a stand-in for "infinity" as recommended by the calculator's user manual. For the purpose here, any value greater than 10 will suffice.

how do you simplify 7/8 + 3/4?

Answers

Answer:

13/8

Step-by-step explanation:

You first find the lcm of 8 and 4 which is 8

Then make a dividing line (/) with the lcm as the numerator.

After which you start diviing the lcm by each denominator of the two terms, and then multiplying with their numerators:

8/8 x 7 + 8/4 x 3 all over the lcm which is 8

(1 x 7 + 2 x 3)/8

(7 + 6)/8

13/8

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In the diagram, ∠AFG and ∠CGF are what type of angles?

A) same side interior angles
B) corresponding angles
C) alternate interior angles
D) alternate exterior angles
E) vertical angles

Answers

A is the right answer, same side interior angles

How do you compute the sum of squared errors

Answers

Answer:

Relating SSE to Other Statistical Data

Variance = SSE/n, if you are calculating the variance of a full population.Variance = SSE/(n-1), if you are calculating the variance of a sample set of data.



Both descriptive statistics (mean, median, mode, and range) and probability (the likelihood that something will happen) can be useful in our academic, professional, and personal lives. • Determine which of the two (descriptive statistics or probability) you find to be the most useful in your life and explain why using two (2) specific examples.

Answers

Descriptive statistics are the most useful in life. Descriptive statistics provide information about a data set and can help to summarize and interpret data. Specifically, I find the mean and median to be the most useful.

What does Descriptive statistics mean?

Descriptive statistics involves the use of measures such as the mean, median, mode, and range, as well as graphical representations of the data, such as histograms, box plots, and scatter plots.

The mean is the average of a set of data and is useful for summarizing and interpreting data. For example, when I am studying for a test, I often use the mean of my practice test scores to understand my overall performance.

The median is the middle value of a set of data and is useful for understanding the spread of the data. For example, when I am tracking my monthly expenses, I often use the median to understand how much I am spending each month. By taking the median of my monthly expenses, I can get an idea of which expenses are taking up the most of my budget.

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Solve using the correct order of
operations.
P
E
MD
AS
15-(4-3) 2= [?]
Enter
Help

Answers

Using the correct order of operations, the value is 13

What is PEDMAS?

PEDMAS is simply described as a mathematical acronym that represents the different arithmetic operations in order from least to greatest of application.

The alphabets represents;

P represents parentheses.E represents exponents.D represents division.M represents multiplication.A represents addition.S represents subtraction.

From the information given, we have;

15-(4-3)2

solve the parentheses first

15 - (1)2

Multiply the values

15 - 2

Subtract the values

13

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The complete question:

Solve using the correct order of

operations of PEMDAS

15 - (4-3)2

If A B C are three matric such that AB=AC such that A=C then A is

Answers

Answer:

invertible

Step-by-step explanation:

If A is invertible then ∣A∣ =0

please help me 25 points

Answers

Answer:

7.  300 miles

8. 60 miles

9. 5 miles

10. 1000 meters

Step-by-step explanation:

7.

We Take

60 x 5 = 300 miles

So, Ruth drives 300 miles in 5 hours.

8.  

5 miles = 10 minutes

1 mile = 2 minutes

2 hours = 120 minutes

We Take

120 / 2 = 60 miles

So, Carl drive 60 miles in 2 hours

9.

1 hour and 25 minutes = 85 minutes

We Take

85 / 17 = 5 miles

So, Nick travels 5 miles in an hour and 25 minutes.

10.

100 meters = 2 minutes

50 meters = 1 minute

We Take

50 x 20 = 1000 meters

So, Stan swims 1000 meters in 20 minutes.

Answer:

7. 300 miles/hours
8. 60 miles in 2 hours
9. 5 miles in 2 hours and 25 mins.

10. 1000 meters in 20 minutes.

Step-by-step explanation:

7. 60 x 5= 300 miles/hours

8. 5 miles in 10 minutes so in 2 hours it will be 5 x 12 = 60 miles in 2 hours

9.  5 miles in 2 hours and 25 mins.

10. 1000 meters in 20 minutes.

Which function is represented by this graph?

A. ƒ(x) = −x² + x − 6
B. f(x) = x² – 5x +6
C. f(x) = -x² + 5x - 6
D. f(x)= x²-x+6

Answers

Answer:

Equation of B represents this graph

choose 5 objects without replacement from 17 objects

Answers

Answer:

6188 ways

Step-by-step explanation:

there ate 5 objects to be choosen and there is no replacement of the object therefore you got

17 choices for the first selection of the object and 16 objects for the selection of the second object and so on until you get 13 objects for the last selection

totally you have 5 selections also arrangement does not matter there fore you have 17!/12!5! which is 6188

note we used 5! cause there are 5 placed objects and 12! are unplaced objects

note

that you have used one so you have to deduct one every time you use one

What is the slope of a line that passes through the points (-2, 3) and (4, -12)?

Answers

The slope of a line passing through two points (x1,y1) and (x2,y2) is given by:

slope = (y2 - y1)/(x2 - x1)

Using the coordinates of the two given points, we have:

slope = (-12 - 3)/(4 - (-2))
slope = (-15)/(6)
slope = -5/2

Therefore, the slope of the line that passes through (-2, 3) and (4, -12) is -5/2.

11. Find the missing dimension of the rhombus.
(Hint: Use the formula A = bh.) (Lesson 1)

Answers

Answer: The missing dimension of the rhombus in the given figure is Height of rhombus h  h=A/b=90/15= 6cm. so missing dimension is h=6cm

What is Dimension ?

In general, dimension refers to the measurement or size of an object, space, or quantity along a particular axis or direction. In mathematics, dimension refers to the number of coordinates needed to specify a point in a space.

What is Rhombus ?

A rhombus is a type of quadrilateral (a four-sided polygon) in which all four sides are of equal length. It is a special case of a parallelogram in which the opposite sides are parallel to each other, and its opposite angles are equal.

In the given question,

area of rhombus is A=b*h  so it can be rewritten as  h=A/b by substituting values given in question we get h= 6cm

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plssss helpppppp!!!!

Answers

Answer:

2.

a) log base 10 of 100

b) The expression means that 10 to the 2nd power equals 100.

c) 2

3.

4. It would make sense that the value is between 1 and 2 because 10 to the 1st power is 10, and 10 to the 2nd power is 100. 50 is between 10 and 100 so the value would have to be between 1 and 2. This works because logs are the inverse function to exponentiation.

a) 2.6021

b) 3 and the value is exact because the base 10 in the log expression is technically the exponent when you convert it to exponent form. This works because logs are the inverse function to exponentiation. So 10 to the 3rd power would give you exactly 1000.

5. Based on the data in the table below, what is the probability that a driver aged 45 - 54 was involved in an accident? Express your answer as a percentage, rounded to 2 decimal places.

Answers

As a result, the probability of a 45-54-year-old motorist becoming involved in an accident is 5.38%, rounded to two decimal places.

What exactly is probability?

Probabilistic theory is a branch of mathematics that calculates the likelihood of an event or proposition occurring or being true. A risk is a number between 0 and 1, with 1 indicating certainty and a probability of around 0 indicating how probable an event appears to be to occur. Probability is a mathematical term for the likelihood or likelihood that a certain event will occur. Probabilities can also be expressed as numbers ranging from 0 to 1 or as percentages ranging from 0% to 100%. In relation to all other outcomes, the ratio of occurrences among equally likely alternatives that result in a certain event.

To determine the likelihood that a driver aged 45-54 was involved in an accident, divide the number of drivers in that age group who were engaged in an accident by the total number of drivers in that age group:

Probability = Number of 45-54-year-old drivers involved in an accident / Total number of 45-54-year-old drivers

We can observe that 7 drivers aged 45 to 54 were engaged in an accident, with a total of 130 drivers in that age group:

The probability is 7/130 = 0.0538.

To convert this to a percentage, multiply by 100:

Probability = 0.0538 * 100 = 5.38 percent

As a result, the likelihood of a 45-54-year-old motorist becoming involved in an accident is 5.38%, rounded to two decimal places.

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find the slope of a line parallel to the line whose equation is 5x - 6y = 30. fully simplify your answer 

Answers

By answering the presented questiοn, we may cοnclude that Since a line equatiοn parallel tο this οne will have the same slοpe, the slοpe οf the parallel line is alsο 5/6.

What is equatiοn?

When twο expressiοns are equal, a mathematical equatiοn is a statement stating that equality. Twο sides are jοined by the algebraic symbοl (=), and tοgether they make up an equatiοn. Fοr instance, the claim that "2x + 3 = 9" means that "2x plus 3" equals the number "9" is made in this argument. Finding the value(s) οf the variable(s) necessary fοr the equatiοn tο be true is the gοal οf sοlving equatiοns.

There are variοus types οf equatiοns, including regular and nοnlinear οnes with οne οr mοre elements. "x² + 2x - 3 = 0" is an equatiοn that raises the variable x tο the secοnd pοwer. Mathematical disciplines like algebra, calculus, and geοmetry all make use οf lines.

the given equatiοn:

[tex]$\begin{array}{c}{{5x-6y=30}}\\ {{-6y=-5x+30}}\\ {{y=(5/6)x-5}}\end{array}$[/tex]

Sο the slοpe οf the given line is 5/6.

Since a line parallel tο this οne will have the same slοpe, the slοpe οf the parallel line is alsο 5/6.

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which purchased paint for an upcoming project. She purchased three different colors,
which come in different sized containers. How much paint does she have altogether?
Color
White
Black
Yellow
Amount
0,4 L
0.75 L
0.3 L

Answers

Answer:

1.45 L

Step-by-step explanation:

Which of the following describes the transformation from Figure 1 to Figure 2?

On a coordinate plane, figure 1 has points (negative 2, 5), (negative 2, 4), (negative 3, 4), (negative 3, 2), (negative 5, 2), (negative 5, 5). Figure 2 has points (2, negative 5), (2, negative 4), (3, negative 4), (3, negative 2), (5, negative 2), (5, negative 5).

Answers

Initially, while maintaining the very same [tex]x-[/tex]coordinates, the negative reflect across the [tex]x-axis[/tex] modifies the signs of all locations' [tex]y-[/tex]coordinates.

Negative: Does it signify plus or minus?

A negative value is one that always has a value lower than zero and is denoted by the minus (-) symbol. In a number line, negative values are displayed just left of zero.

What is the significance of both positive and negative values in math?

If a number is higher than zero, it is considered positive. Or less zero numbers are referred to as negative numbers. If a number is bigger than that or equal to zero, it is not negative. If a number falls below or equal to zero, it is non-positive.

This transforms Figure [tex]1[/tex] into a new figure with points [tex](-2, -5), (-2, -4), (-3, -4), (-3, -2), (-5, -2), (-5, -5)[/tex].

Next, the [tex]180^{0}[/tex] rotation about the origin swaps the signs of both [tex]x[/tex] and [tex]y[/tex] coordinates of each point. This results in the final figure with points [tex](2, -5), (2, -4), (3, -4), (3, -2), (5, -2), (5, -5)[/tex].

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Can you guys help me?​

Answers

Answer:

[tex]{ \sf{a = \frac{0.012}{0.633 -0.063 } }} \\ \\ { \sf{a = \frac{0.012}{0.57} }} \\ \\ { \sf{a = 0.021 \: (2 \: s.f)}}[/tex]

Uri paid a landscaping company to mow his lawn. The company charged $74 for the service plus
5% tax. After tax, Uri also included a 10% tip with his payment. How much did he pay in all?

Answers

Answer:

$85.47

Step-by-step explanation:

Before tax and before tip: $74

Tax is 5%.

5% of $74 = 0.05 × $74 = $3.70

Cost including tax (but not tip): $74 + $3.70 = $77.70

After tax but before tip: $77.70

Tip is 10%.

10% of $77.70 = 0.1 × $77.70 = $7.77

Total price after tax & tip:

$77.70 + $7.77 = $85.47

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Parallelogram ABCD is a rhombus with measure EBC = 36. What is the measure of DAE?

picture below

Answers

Answer:

54°

Step-by-step explanation:

AB = BC = CD = AD (Because all sides of a rhombus are equal)

Let's consider the triangle DBC:

BC = DC => ∠DBC = 36°

The angle DCB is equal to:

180° - 36*2 = 180° - 72° = 108°

In a parallelogram, opposite angles are equal.

Then the angle DAB = DCB = 108°

Also, we know that the diagonals of a rhombus are the bisectors of the angles from which they come.

So, the angle DAE = EAB = 108° / 2 = 54°

-3+b> 7 OR b +9 <17.

Answers

The solution to the compound inequality -3+b> 7 OR b +9 <17 is given as follows:

b < 8 or b > 10.

How to solve the compound inequality?

The inequality for this problem is defined as follows:

-3+b> 7 OR b +9 <17.

The or operation means that the we must solve each operation separately, and then the solution set to the compound inequality is given by the union of the solution set of each of the inequalities.

The solution set for the first inequality is given as follows:

-3+b> 7

b > 10.

The solution set for the second inequality is given as follows:

b + 9 < 17

b < 8.

Hence the solution for the entire inequality is of:

b < 8 or b > 10.

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What are the values of each of the exterior angles?
A) 30º, 30º, 60º, 60º
B) 90º, 90º, 180º, 180
C) 60º, 60º, 120º, 120º

Answers

Answer:

C) 60º, 60º, 120º, 120º

Step-by-step explanation:

We know the sum of all the angles in a rectangle is 360 degrees, whether it's irregular or not.

Given: x + 2x + 2x + x = 360

Calculate the linear equation, to find x.

x + 2x + 2x + x = 360

3x + 3x = 360

6x = 360  (Divide both sides by 6)

x = 60 degrees.

Then you can calculate the polygons.

x + 2x + 2x + x

For the first x, = 60.

Then for 2x, 60 * 2 = 120.

Then for 2x again, = 120.

Finally for the last x, = 60.

Therefore, the answer is C) 60º, 60º, 120º, 120º.

state the third congruence statement that is needed to prove that FGH is congruent to LMN using the ASA congruence therom

Answers

Answer:

a

Step-by-step explanation:

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Write a sentence or two that includes a description of a character or plot event in our class reading that connects to something from another text you have read or film you have seen. Be sure to include the title (and author, if known) of the text or film you will be connecting to our class texts. (You can ask yourself questions such as: Does the text remind me of something else I have read? What similarities do I see between the text and something else I have read?)Finally, think about a connection you can make between the text you have chosen from our class readings and a connection with something that has happened or is happening in our world today. Write a sentence or two that includes a description of a plot event or character action that connects to our world. Be sure to explain the connection. (To help yourself write these sentences, you can ask yourself questions, such as: Does the text remind me of something that has happened in the world around me? Do the events in the story remind me of something that has happened in the world? 13. A change in a gene causes a polar bear cub that lives in a snowy climate to be bornwith a black coat instead of a white one, making it more vulnerable to predators.This is an example of which type of Mutation. Write the electronic configuration and draw the orbital diagram for the element: lead (Z=82) State if it is diamagnetic/paramagnetic. Please decide the diamagnetic/paramagnetic property based on the orbital diagram only! (It is okay to use the noble gas in square brackets here) calculate 20 1/3 -7 1/2 Write a quadratic equation that goes through the points (0,5), (2,1), and (1,2). y = ax^2 + bx + c Alicia, a district manager for a global retailer, is traveling to different stores in her district to discuss with store managers how to increase profitability for the rest of the fiscal year. What is Alicia doing? Multiple Choice eliminating the planning/control cycle avoiding the planning/control cycle controlling the direction of the planning/control cycle researching the planning/control cycle forecasting the planning/control cycle vertebrates have circulatory systems in which blood remains within vessels that exchange materials with the interstitial fluid.tre or false yallow, inc. manufactures teddy bears and dolls. currently, yallow makes 2,000 teddy bears each month. each teddy bear uses $2.00 in direct materials and $0.50 in direct labor. yallow uses two activities in manufacturing the teddy bears: sewing and processing. the cost associated with sewing is $15,000 a month, allocated on the basis of direct labor hours. the cost associated with processing is $10,000 a month, allocated on the basis of batches. the activity drivers are used as follows:Teddy Bears DollsDirect labor hours 100 200Batshes 4 6 What is the total manufacturing cost for one teddy bear?A. $2.50 B. $4.50 C. $7.00 D. $25,002.50 which activity takes place once the design of the promotional program is complete? multiple choice question. Mr. Chand is one of the landlords of his town. He buys a land for his daughter spanning over aarea of 480m. He fences the dimensions of the land measuring (x+12) mx (x+16) m. Now heplans to erect a house with a beautiful garden in the ratio 5:3 respectively. A total of Rs. 5,00,000 is estimated as the budget for the expenses.1)Give the area of the land purchased in linear polynomial form using algebraic expression2)Mr. Chand's daughter is ready to share 3/5" of the expenses by her earnings. Express thefraction in amount.3)Can you solve the linear equation/polynomial of the area into different factors? To save for retirement, Ed is investing 14.286 thousand dollars this year. Write the function R(t) that shows the stream of money flowing into Ed's investment account under each of the following circumstances. Assume a continuous income stream. Do NOT round any values (a) Ed continues to invest the same amount each year for the next 20 years. R(t)-14.286thousand dollars per year (b) Ed increases his investment by 3.75 thousand dollars per year over the next 20 years. A(t)-18.036 | X thousand dollars per year (c) Ed increases his investment by 3.75% each year over the next 20 years. R(t)- thousand dollars per year A fisherman is holding a fishing rod with a large fish hanging from thee line. Identify the forces acting on the rod and describe the interaction partner of each.