If √5+√2=a+b√10 find a and b​

Answers

Answer 1

Answer:

Firstly, we'll apply the below identity.

[tex]{\boxed{\sf{(a+b)^{2} = a^{2} + b^{2} +2ab}}}[/tex]

Applying the above identity.

⇒ (√5 + √2)²

⇒ (√5)² + (√2)² + 2×(√5)×(√2)

⇒ 5 + 2 + 2√10

⇒ 7 + 2√10

Comparing the LHS and RHS

⇒ 7 + 2√10 = a + b√10

∴ a = 7 and b = 2.


Related Questions

The data below represent the number of days absent per year in a population of three employees of a small company:
1 4 7
Assuming that you sample without replacement, select all possible samples of n = 2 and construct the sampling distribution of the mean. Compare the mean of all the samples means and also compute the population mean. Are they equal? What is the property called?
Repeat (a) for all the sampling distribution of the mean in (a) for n= 3. Which sampling distribution has less variability? Why?
Assuming that you sample with replacement, repeat (a) through (c) and compare the results. Which sampling distribution have the least variability – those in (a) or (b) ? Why?

Answers

The sampling distribution is illustrated below.

How to illustrate the sampling?

Based on the information given, the population is illustrated as 1, 4, 7. The sample without replacement will be:

Sample Mean

1 and 4. 2.5

1 and 7. 4

4 and 7. 5.5

The population mean will be:

= (1 + 4 + 7)/3

= 4

The sample mean is an unbiased estimator of the population mean.

The sampling with replacement illustrates that the mean will be:

= 36/9 = 4

Also, when n = 3, the number of samples will be:

= 3³ = 27

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Which of the following is the equation for the graph shown?

Answers

The equation of an ellipse for the graph shown is [tex]\frac{x^2}{5^2} + \frac{y^2}{21^2} = 1[/tex]

How to determine the equation?

Since the given coordinates of the vertices and foci have the form (-5, 0) and (5, 0) and (-2, 0) and (2, 0) respectively, this ultimately implies that the major axis of this ellipse is the x-axis.

Thus, the standard form of the equation of this ellipse is given by:

[tex]\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1[/tex]

Next, we would solve for b² by using this equation:

b² = a² - c²

b² = 5² - 2²

b² = 25 - 4

b² = 21.

Substituting the parameters into the standard equation of an ellipse, we have;

[tex]\frac{x^2}{5^2} + \frac{y^2}{21^2} = 1[/tex]

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A triangle has integer length sides. If two sides of the triangle are 16 and 21, how many possible lengths are there for the third side

Answers

There are 31 possible lengths for the third side.

Unknown Side +  16 > 21

Unknown Side >  5

16 + 21  > Unknown Side

37 > Unknown Side      

Unknown Side  <  37

So, the possible integer lengths range from

6 -  36  

=   36 - 6 + 1  

= 31 possible lengths

The length of the third side of a triangle has to continually be among (but not equal to) the sum and the distinction among the alternative facets. As an instance, take the example of two, 6, and seven. and consequently, the 0.33 facet length has to be extra than four and less than eight.

The regulation of Cosines to calculate the unknown aspect, then use the Law of Sines to find the smaller of the opposite angles and then use the 3 angles add to 180° to find the final attitude.

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What is the range of the function f(x) = 3/4|x| - 3

All real numbers
All real numbers less than or equal to 3
All real numbers less than or equal to -3
All real numbers greater than or equal to -3

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

9514 1404 393

Answer:

 all real numbers greater than or equal to –3

Step-by-step explanation:

|x| has a range of all real numbers greater than or equal to zero, so f(x) = |x|-3 will have a range of ...

 all real numbers greater than or equal to -3

In the diagram, ABCDE is a regular pentagon. The sides AB and DC are produced to meet at F. Find the angles x, y and z.​

Answers

Answer:

x = 108°

y = 72°

z = 36°

Step-by-step explanation:

Finding unknown angles:

   If all sides are equal in a pentagon, then it is a regular pentagon.

n = the number of sides = 5

Sum of all angles in a pentagon = (n -2) * 180

                                                     = (5 - 2)* 180

                                                     = 3 *180

                                                     = 540°

Sum of each angle of regular pentagon = 540 ÷ 5

                                                                  = 108°

  [tex]\sf \boxed{\bf x= 108^\circ}[/tex]

Linear pair: If the non common arm of adjacent angles form a straight line, then the adjacent angles are called linear pair and they add up to 180°

∠DCB + y = 180 °   {Linear pair}

  108  + y = 180

            y = 180 - 108

            [tex]\sf \boxed{\bf y = 72^\circ}[/tex]

Exterior angle property of triangle: The exterior angle equals the sum of opposite interior angles.

In Δ BCF ,

  x = y + z

Now, substitute the values of x and y , and we can find the value of z.

      108° = 72 + z

108  - 72 = z

     [tex]\sf \boxed{\bf z = 36^\circ}[/tex]

Solve the quadratic equation 9x ^ 2 - 6x = 11 using the quadratic formula.

Answers

Answer:

x = 1.48803, x= -0.821367

Step-by-step explanation:

9x²-6x=11

9x²-6x-11=0

use quadratic formula: x = [- b ± √b²- 4ac)]÷ 2a

Answer:

x =1+2{3 over 3

Step-by-step explanation:


Which ordered pair would form a proportional retationship with the points in the graph?
4,4
6,9
9,6
8,5

Answers

Answer:

(9, 6)

Step-by-step explanation:

the given points are

(3, 2)

(6, 4)

so, can you see, how the sequence continues ?

I see immediately that for every 3 additional units of x we add 2 units of y.

so, yes, the next point in the sequence is

(6 + 3, 4 + 2) = (9, 6).

so, this point (or ordered pair) follows the same ratio or proportional relationship between x and y as the points already in the graph.

in other words, they are on the same line following the same slope ("y coordinate change / x coordinate change" when going from one point on the line to another).

Triangles L M N and P O N connect at point N. Angles L M N and N O P are congruent.
Why is the information in the diagram enough to determine that △LMN ~ △PON using a rotation about point N and a dilation?

because both triangles appear to be equilateral
because∠MNL and ∠ONP are congruent angles
because one pair of congruent corresponding angles is sufficient to determine similar triangles
because both triangles appear to be isosceles, ∠MLN ≅ ∠LMN, and ∠NOP ≅ ∠OPN

Answers

Answer: because ∠MNL and ∠ONP are congruent angles

Step-by-step explanation:

Options 1 and 4 are wrong because we cannot base our answer on assumptions from the diagram.

Option 3 is wrong because you need two pairs of corresponding congruent angles to prove similar triangles, not just 1.

May someone help me please?

Answers

ANSWER: Isosceles

Explanation: few triangles have both and altitude and a median as the same line

i need help with this one

Answers

Answer:

horizontal asymptote of y = -7

Step-by-step explanation:

The parent function is shown on the coordinate plane. The graph of the parent function has a horizontal asymptote (an imaginary line that the graph approaches, but never touches or intersects) of y = 0.

Since the function of g(x) = e^x - 7 is the graph of the parent function translated 7 units down, the function would have a horizontal asymptote of y = -7.

Find last​ year's salary​ if, after a 4% pay​ raise, this​ year's salary is 31,720

Answers

Answer:

30500[tex].[/tex]

Step-by-step explanation:

104%=31,720

100%=  x

[tex]\frac{(31720)(100)}{104}=30500[/tex]

I would appreciate if someone could explain this to me , thanks

Answers

Answer: 0.001389

Step-by-step explanation:

Since you have 6 probabilities that it could be red, you get 1/6. Now, you took 1 probability out of 6, so now you only have 5. So you multiply 1/6 by 1/5. Now you have only 4 cards. Multiply 1/ 6 * 1/5 * 1/4 and keep going (e.g 1/6 * 1/5 * 1/4 * 1/3 * 1/2 * 1). This comes out to 0.00138888888, or rounded to six decimal places, 0.001389.

If my answer was helpful, please mark it as brainliest. The other dude's answer was WRONG.

What is the area of a rectangle with vertices at (−3, −1), (1, 3), (3, 1), and (−1, −3)?

Do not round any side lengths

Answers

Using the distance formula, the area of the rectangle is: 16 units².

What is the Area of a Rectangle?

Area of a rectangle = (length)(width).

Given the vertices:

A(−3, −1)B(1, 3)C(3, 1)D(−1, −3)

Area = (AB)(BC)

Apply the distance formula, [tex]d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex], to find AB and BC:

AB = √[(1−(−3))² + (3−(−1))²]

AB = √[(4)² + (4)²]

AB = √32

BC = √[(1−3)² + (3−1)²]

BC = √[(−2)² + (2)²]

BC = √8

Area = (√32)(√8) = √256

Area = 16 units²

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Glven: AABC with DE || AC
AD CE
EB
Prove: DB
B
1. DE
2.
Statement
E
Reason
C
given
If two parallel lines are
cut by a transversal, the
corresponding angles are
congruent.
What is the missing step in this proof?
OAZCAB
OB. ZADE
OC.
OD. ZCABLEDB, ZACB DEB
LACB, LEDB ZDEB
ZDBE, ZCED= LEBD
ZCAD ZACE, ZADEZCED

Answers

The missing statement in the proof is; AB/BD = CB/EB

What are similar triangles?

Similar triangles have the same corresponding angle measures and proportional side lengths.

The given proof is the triangle proportionality theorem which states that the segments formed by side DE are proportional.

The two column proof is presented as follows;

Statement                                           Reason

1. DE || AC                                             1. Given

2. ∠CAB ≅ ∠EDB        2. Corresponding angles formed between ║ lines

3. ΔABC ~ ΔDBE                  3. AA criterion for similarity

4. AB/BD = CB/EB                4. Corr. sides of similar Δs are prop.

5. AB = AD + DB                   5. Segment addition CB = CE + EB

6. (AD + DB)/(DB) = (CE + EB)/(EB)        6. Substitution Property of Equality

7. (AD)/(DB) + 1 = (CE)/(EB) + 1               7. Division

8. (AD)/(DB) = (CE)/(EB)                          8. Subtraction Property of Equality

Hence, the missing statement in the proof is; AB/BD = CB/EB

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Which of the following is an expression with no
restrictions? (This involves factoring & rationals)

3x-4
____
x + 2

13x + 4
_____
24

x-3
___
x-3

Answers

Answer:

Step-by-step explanation:

13x+4/24

Rationals means that a variable would be in the denominator. In this case, only 24 is just a number

A triangle has one side length of 2x

2 + 5x + 3. The other two sides of the triangle have lengths x

2 + 2x and
3x − 2. Determine the simplified expression that represents the total perimeter of the triangle.

Answers

The simplified expression that represents the total perimeter of the triangle is 2x^2 + 10x  + 3

How to determine the perimeter?

The side lengths are given as:

2x^2 + 5x + 3, 2 + 2x and 3x - 2

Add these lengths to determine the perimeter (P)

P = 2x^2 + 5x + 3 + 2 + 2x + 3x - 2

Collect like terms

P = 2x^2 + 5x + 2x + 3x  + 3 + 2 - 2

Evaluate the like terms

P = 2x^2 + 10x  + 3

Hence, the simplified expression that represents the total perimeter of the triangle is 2x^2 + 10x  + 3

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Quick algebra 1 question for 50 points! :)

Answers

Answer:

a. $6

b. the point (1,6)

c. slope of line is y=6x, plug in 1 as x

Step-by-step explanation:

Answer:

Adam deposit $6 each week

I determined the answer, based on the point (1,6)

For question c, slope of line is y = 6x because 1 will not count in here

Step-by-step explanation:

When I was in Algebra 1, I did get this similar question.

Determine an equivalent expression by rationalizing the denominator: (5√3)/(4-√6)

Answers

Step-by-step explanation:

so when you want to rationalize the denominator when it's in the form [tex](a-\sqrt{b})[/tex] you multiply by the conjugate which is [tex](a+\sqrt{b})[/tex] which is where the sign is the opposite. This is because it's using the difference of squares to get rid of the square root. Because [tex](a-b)(a+b) = a^2-b^2[/tex] this will remove the square root since it's going to become square and the ab - ab will cancel so there will be no square root

Multiply by conjugate

[tex]\frac{5\sqrt3}{4-\sqrt6} * \frac{4+\sqrt6}{4+\sqrt6}\\[/tex]

Simplify:

[tex]\frac{20\sqrt{3} + 5\sqrt{6 * 3}}{16-6}[/tex]

Simplify radical

[tex]\frac{20\sqrt{3} + 15\sqrt{2}}{10}\\[/tex]

You could go further and do

[tex]2\sqrt{3} + 1.5\sqrt{2}[/tex]

What is the value of g( − 3) when g(x) = 2x-2

Answers

Hello,

[tex]g(x) = 2x - 2[/tex]

[tex]g(-3) = 2 \times (- 3) - 2 = -6 - 2 = -8[/tex]

Answer: g(-3) = -8

Given that:

g(x) = 2x - 2

To find g(-3), insert (x = -3):

⇒ g(-3) = 2(-3) - 2

⇒ g(-3) = -6 - 2

⇒ g(-3) = -8

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eric borrowed 5,000 to buy a used car. he agreed to make monthly payments of 175.00 for 36 months how much will how actually pay the bank

Answers

If Eric agreed to make monthly payments of 175.00 for 36 months, the total amount of money he will pay the bank is 6,300.

How much will Eric pay the bank?

Given that;

Amount of money borrowed = 5000Monthly payment = 175.00Number of month = 36Total amount of money paid to the bank = ?

To determine the total amount of money that Eric will pay the back, we simply multiply his monthly payment and the number of months.

175.00 × 36

= 6,300

Hence, if Eric agreed to make monthly payments of 175.00 for 36 months, the total amount of money he will pay the bank is 6,300.

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For random samples of size 100 from a population, the mean of the sample means from all possible samples is _________ ____ the population mean.

Answers

For random samples of size 100 from a population, the mean of the sample means from all possible samples is less than the population means.

The suggestion of the pattern means will equal the population suggest. the standard deviation of the distribution of the sample means, called the same old blunders of the suggested, is the same as the population trendy deviation divided by means of the rectangular root of the sample length (n).

The general sample suggests components for calculating the pattern mean.

The populace suggest is the mean or average of all values within the given population and is calculated by using the sum of all values within the population denoted with the aid of the summation of X divided by way of the number of values in the population that's denoted with the aid of N.

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An 84-foot building casts a 98-foot shadow. What is the angle that the sun hits the building? HINT: Draw a picture.

Answers

Answer:

40.6°

Step-by-step explanation:

The building and the shadow are perpendicular to each other (or intersect at a 90° angle).

Meaning that this is a triangle problem.

We are making a triangle from the building to the shadow and a diagonal line connecting the ends of both.

We need to find the angle at the top of the building. The opposite side of the angle is 84. The adjacent side is 98.

Opposite / Adjacent = Tan X

So if we go to the calculator:

[tex]tan^{-1} (\frac{84}{98}) = 40.6[/tex]

The answer is 40.6 degrees.

Quadrilateral A B C D is rotated 145 degrees about point T to form quadrilateral A prime B prime C prime D prime.
Quadrilateral ABCD is rotated 145° about point T. The result is quadrilateral A'B'C'D'. Which congruency statement is correct?

ABCD ≅ A'B'C'D'
ABCD ≅ A'D'C'B'
CDAB ≅ A'D'C'B'
CDAB ≅ C'B'A'D'

Answers

The correct answer is option A which is ABCD ≅ A'B'C'D'.

What is translation?

The process of changing the location of the image on the coordinate system will be known as the translation.

Quadrilateral ABCD is rotated at 145° about point T. The result is quadrilateral A'B'C'D'.

ABCD ≅ A'B'C'D'is correct Since the quadrilateral remains the same even after rotation of 145 degrees. Its corresponding sides and angles will remain the same.

Thus ABCD is congruent to A'B'C'D'.

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Answer: The answer is A

Step-by-step explanation:

In a fourth-grade class, students are making cookies to learn about fractions. They are using a set of measuring cups and spoons for their measurements. This learning is best described as:

Answers

In a fourth-grade class, students are making cookies to learn about fractions. They are measuring using measuring cups and spoons. This learning is best described as formal standard measurement.

A standard unit of measurement is a quantifiable language that helps everyone understand the association of the object with the measurement. It is expressed in inches, feet, and pounds, in the United States, and centimeters, meters, and kilograms in the metric system.

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When p2 – 4p is subtracted from p2 + p – 6, the result is

Answers

[tex]\Large\maltese\underline{\textsf{Our problem:}}[/tex]

When [tex]\bf{p^2-4p}[/tex] is subtracted from[tex]\bf{p^2+p-6}[/tex], the result is...?

[tex]\Large\maltese\underline{\textsf{This problem has been solved!}}[/tex]

[tex]\bf{Subtract:}[/tex]

[tex]\bf{p^2+p-6-p^2-4p}[/tex]. | combine like terms

[tex]\bf{p^2-p^2+p-4p-6}[/tex] | simplify

[tex]\bf{0p^2-3p-6}[/tex] | simplify

[tex]\bf{-3p-6}[/tex]

[tex]\rule{300}{1.7}[/tex]

[tex]\bf{Result:}[/tex]

                   [tex]\bf{-3p-6}[/tex]

[tex]\boxed{\bf{aesthetic \not101}}[/tex]

Answer:

5p - 6

Step-by-step explanation:

p² + p - 6 - (p² - 4p) ← distribute parenthesis by - 1

= p² + p - 6 - p² + 4p ← collect like terms

= 5p - 6

What is root -9 + root -12 written as a complex number in the form a + bi ?

Answers

Answer:

Step-by-step explanation:

I assume you are talking about square roots when you say root...

Sqrt(-9) = 3i

Sqrt(-12) = 2Sqrt(3)i

Complex number is 3 + 2Sqrt(3) i

HELP ASAP
Given: ABCD is a parallelogram and ABC is a right angle.
Prove: BD is congruent to AC.

Answers

ABC is a right angle

ABCD is a parallelogram

Opposite sides of a parallelogram are equal

So

BC=ADAB=DC

Opposite angles are equal

<B=<D

Hence

∆ABC and ∆CDB are congruent by SAS

BD=AC

PLS HELP I NEED THIS QUICK THANK YOU IN ADVANCE

Use the substitution method to solve the system of equations. Choose the
correct ordered pair.
y = 5x-17
y = x + 3
OA. (5,8)
OB. (4,7)
O C. (1,-12)
OD. (5,-17)

Answers

Answer:

A(5 ; 8)

Step-by-step explanation:

y = 5x - 17

y = x + 3

    5x - 17 = x + 3

⇔ 5x - x = 3 + 17

⇔ 4x = 20

⇔ x = 20/4

x = 5

y = 5 + 3 = 8

So (5 ; 8)

Answer:

We can use the substitution method to solve the system of equations.

Since y = x + 3, we can substitute this expression for y in the first equation:

y = 5x - 17

x + 3 = 5x - 17

Subtracting x from both sides, we get:

3 = 4x - 17

Adding 17 to both sides, we get:

20 = 4x

Dividing both sides by 4, we get:

x = 5

Substituting this value of x into either equation, we get:

y = x + 3 = 5 + 3 = 8

Therefore, the correct ordered pair is (5, 8), which corresponds to the point where the two lines intersect.

The correct answer is (A) (5,8).

The Boden brothers had a 25-meter swimming race at a pool. Michael gave Hasson a 3-meter head start. Use the given data below to determine who won the race and by how many seconds.

Hasson’s Swim

A graph with points (6, 9.6), (8, 11.8), (10, 14), and (12, 16.2).

Michael’s Swim

A 2-column table with 4 rows. Column 1 is labeled Time (seconds) with entries 6, 8, 10, 12. Column 2 is labeled Distance (meters) with entries 8.4, 11.2, 14, 16.8.


won the race by about
seconds.

Answers

For  Hasson’s Swim the data is a graph with points (6, 9.6), (8, 11.8), (10, 14), and (12, 16.2), and Michael’s Swim A 2-column table with 4 rows. Column 1 is labeled Time. Micheal won by 2 sec. This is further explained below.

Who won the race by about seconds?

Generally, a diagram that illustrates the relationship between variable quantities, usually consisting of two variables, with each variable being measured along one of a pair of axes that are intersected at right angles.

In conclusion, Micheal won by 2 sec.

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Answer:

1. Michael

2. 2 seconds  

Step-by-step explanation:

flash is the best show on netflix

In a sequence, each number is 2 less than double the previous number. morgan finds the number directly before 48 in the sequence. his answer has two digits. he adds these two digits to get a new number. what is the new number

Answers

The new number in the sequence is found to be 7.

What is the term of the sequence?

In mathematics, a sequence is a list of components, usually numbers, where the components' order is important. Here, everything fits into a predetermined pattern.

A sequence can be arranged in either ascending or descending order.

There are certain unique sequences, including the triangular number series, square number sequence, cube number sequence, geometric sequence, Fibonacci sequence, and harmonic sequence.

According to the question, the sequence follows the pattern:

Next number=2(Previous number)-2

On substituting the values,

48=2(Previous number)-2

50=2(Previous number)

Previous number=[tex]\frac{50}{2}[/tex]=25

New number=sum of digits of the previous number in the sequence

                     =2+5

                     =7

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Describe how Mrs. Bowles responds to Montag reading the poem. Question 1 options: a) She becomes angry with Montag for making Mrs. Phelps cry. b) She is intrigued by the poem, and wants Montag to read more. c) She breaks down and begins crying uncontrollably. d) She agrees with Mildred when Mildred calls Montag a monster. Air America has a policy of booking as many as 15 persons on an airplane that can seat only 14. (Past studies have revealed that only 85% of the booked passengers actually arrive for the flight.) Find the probability that if Air America books 15 persons, there will be enough seats will be available. Select the correct answer from each drop-down menu.Consider the function f(x) = 2x + 6 and the graph of the function g shown below.The graph of g is the graph of f translatedunits What is the slope and the y-intercept of the line on the graph below? On a coordinate plane, a line goes through points (0, 1) and (4, 0). a slope = 4, y-intercept = 1 b slope = 4, y-intercept = 4 c slope = Negative one-fourth, y-intercept = 1 d slope = Negative one-fourth, y-intercept = 4 write a letter to minister of health suggesting ways of improving health sector in the country Wynton Marsalis grew up in New Orleans and attended the Juilliard School of Music, but soon decided that his future was in: How do (inter) governmental organisations, such as the International Energy Agency, project energy use and carbon emissions for the future? Discuss the potential drawbacks of projections. Which angle is an exterior angle?ikga which animals can be as deadly to children as lions and tigers? options- amphibians, ocelots and bobcats, macaque monkeys, reptiles? In a group of muskmelon plants, some individuals have sour fruit and others have sweet fruit. in this group, the gene for the fruit taste trait has two alleles. the allele f is for sour fruit, and the allele f is for sweet fruit. a certain muskmelon plant from this group has sweet fruit. this plant has two alleles for sweet fruit. based on this information, click the blue words to correct any errors in the text. this muskmelon plant's genotype for the fruit taste trait is sweet fruit. this muskmelon plant's genotype for the fruit taste gene is ff. this muskmelon plant is homozygous for the fruit taste gene. Using a Marxist approach, Steven Spitzer claims that prime targets for deviant labeling include ________ The structure, processes, and procedures of an organization are designed, put into place, reviewed, and reworked through a process known as ______. Which of the following statements must be true about the diagram? Check all that apply. (y + 4)^2 2(y + 4) + 1 Can someone explain step by step how to get this please? What are the x-intercepts and the y-intercepts of the graph of 12x3y=36 The table shows three values of x and their corresponding values of f (x) for a linear function f, such that f (r) = 0 and f (0) = s, where r and s are constants. What is the value of rs? What method of research examines the behavior patterns of certain types of individuals?. how do historians use evidence to create historical narratives Your next-door neighbor, a kind, elderly lady, just discovered that her stock account had been excessively traded in an inappropriate manner, mainly to generate excess commissions. This is an example of Question 14 options: account theft. black market trading. high turnover trading. churning. None of these.