Please help
Factor

f(x) = 2×2 - 9x- 18
(2x + [?])(x - [ ])

Please HelpFactor F(x) = 22 - 9x- 18(2x + [?])(x - [ ])

Answers

Answer 1

Step-by-step explanation:

The quadratic expression f(x) = 2x^2 - 9x - 18 can be factored as (2x + 3)(x - 6). So, the missing values in the given expression (2x + [?])(x - [ ]) are 3 and 6, respectively.

Answer 2

Answer:

(2x + 3)(x -6)

Step-by-step explanation:

2x² -9x -18

2 × -18 = -36

Find factors of -36 which you multiply will give -36 but when same factors are added will give -9.

-12 × 3 = -36

-12 + 3 = -9

2x²-12x +3x -18

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

(2x + 3)(x -6)


Related Questions

PART A

A manufacturer is designing a flashlight. For the flashlight to emit a focused beam, the bulb needs to be on the central axis of the parabolic reflector, 3 centimeters from the vertex. Write an equation that models the parabola formed when a cross section is taken through the reflector’s central axis. Assume that the vertex of the parabola is at the origin in the xy coordinate plane and the parabola can open in any direction.

answer: y= 1/12(x-0)^2+0

Find the equation of the directrix of the parabola found in part A.

Answers

The equation of the directrix of the parabola found in part A is [tex]x^2 = -2cy + c^2.[/tex]

The equation of the parabola formed when a cross section is taken through the reflector's central axis is

[tex]y = (1/12)(x - 0)^2 + 0.[/tex]

In this equation, the vertex is at the origin (0, 0) and the coefficient 1/12 determines the shape of the parabola.

The equation implies that the parabola opens upward because the coefficient of [tex]x^2[/tex] is positive.

To find the equation of the directrix, we can use the distance formula. The directrix is a horizontal line that is equidistant from the vertex as any point on the parabola.

Since the parabola is symmetric with respect to the y-axis, the directrix will also be symmetric with respect to the y-axis.

Let's assume that the directrix is a horizontal line with the equation y = c, where c is a constant.

To find the value of c, we need to consider a point (x, y) on the parabola. The distance from the point (x, y) to the directrix y = c should be equal to the distance from the point (x, y) to the vertex (0, 0).

Using the distance formula, the distance from (x, y) to the directrix y = c is given by |y - c|, and the distance from (x, y) to the vertex (0, 0) is given by [tex]\sqrt{(x^2 + y^2)}[/tex]

Setting these distances equal, we have:

[tex]|y - c| = \sqrt{(x^2 + y^2)}[/tex]

Squaring both sides of the equation, we get:

[tex](y - c)^2 = x^2 + y^2[/tex]

Expanding and simplifying the equation, we have:

[tex]y^2 - 2cy + c^2 = x^2 + y^2[/tex]

Simplifying further, we obtain:

[tex]-2cy + c^2 = x^2[/tex]

Rearranging the terms, we get:

[tex]x^2 = -2cy + c^2[/tex]

This equation represents the equation of the directrix of the parabola formed by the reflector.

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similarly in right triangles

Answers

The value of y for the right triangle is equal to 48, which makes the first option correct.

How to evaluate for the values of y for the triangle

The perpendicular height of the right triangle divides the triangle in two triangles with the same proportions as the original triangle.

60/x = 36/60 {opposite/hypotenuse}

x = (60 × 60)/36 {cross multiplication}

x = 100

by Pythagoras rule the unlabeled side of the entire triangle is calculated as:

√(100² - 60²) = 80

so;

y/80 = 60/100 {opposite/hypotenuse}

y = (60 × 80)/100 {cross multiplication}

y = 48

Therefore, the value of y for the right triangle derived to be 48.

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total surface area of a cuboid is 112^2 find x

Answers

123 this ensures that the sfheifdskdf d

3. What is the slope of a line that is parallel to the line shown?
(0, 3) (3,2)

1/3
-1/3
-3
3/2

Answers

Answer:

slope m = - [tex]\frac{1}{3}[/tex]

Step-by-step explanation:

calculate the slope m of the line using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (0, 3) and (x₂, y₂ ) = (3, 2) ← 2 points on the line

m = [tex]\frac{2-3}{3-0}[/tex] = [tex]\frac{-1}{3}[/tex] = - [tex]\frac{1}{3}[/tex]

• Parallel lines have equal slopes

then parallel line will have a slope of - [tex]\frac{1}{3}[/tex]

I need some help on my exam reveiw for my math class, can someone please help me so i get a good grade and know how to do my exam?

Answers

A preimage includes a line segment with a length of x units and a slope of munits. The preimage is dilated by a scale factor of n.

The length of the corresponding line segment in the image is nx units. The slope of the corresponding line segment in the image is m.

What is slope?

The slope or gradient of a line is described as  a number that describes both the direction and the steepness of the line.

The is very important and tells you how steep a line is, or how much y increases as x increases.

In conclusion, the slope is constant (the same) anywhere on the line.

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Kate is firing off her homemade rockets for a project in physics class. The
maximum height of any of her rockets can be represented by the equation
h = 40t-16t², where h is the height (in feet) of the rocket after t seconds.

Find the domain and range

Answers

The domain of the height function is [0, 2.5]

The range of the height function is [0, 25]

How to find the domain and range?

We know that the height is given by the quadratic function:

h(t) = 40t - 16t²

First, the domain. This is the set of possible values of t.

We know that we start at t = 0.

The final value of the domain is t such that the rocket returns to the ground, that is when h = 0.

We can rewrite the function as:

h(t) = 40t - 16t² = t*(40 - 16t)

It is zero when t = 0 (we already know) and when 40 - 16t = 0

Solving the second one we get:

40 - 16t = 0

40 = 16t

40/16 = t

2.5 = t

Then the domain is [0, 2.5]

For the range we need to find the maximum height, we know that the minimum height is h = 0.

The maximum one is when t = (2.5 + 0)/2 = 1.25

Evaluating there we get:

h = 40*1.25 - 16*(1.25)²

h =  25

Then the range is [0, 25]

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-4x^2 + 2x - 5(1+x) which expression is equivalent to the given expression

Answers

The given expression -4x^2 + 2x - 5(1+x) is equivalent to -4x^2 - 3x - 5, not -5 - 5x.

To simplify the expression -4x^2 + 2x - 5(1+x), we can distribute the -5 to the terms inside the parentheses:

-4x^2 + 2x - 5(1+x) = -4x^2 + 2x - 5 - 5x

Next, we can combine like terms:

-4x^2 + 2x - 5 - 5x = -4x^2 + (2x - 5x) - 5

Simplifying further, we have:

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

Therefore, the expression -4x^2 + 2x - 5(1+x) is equivalent to -4x^2 - 3x - 5.

It's important to note that when we distribute the -5 to the terms inside the parentheses, we multiply each term by -5. So, the expression becomes -5(1) - 5(x). However, -5(1) simplifies to -5, and -5(x) simplifies to -5x. Hence, the expression simplifies to -5 - 5x.

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in ABC,A=38° 18', a = 300m, b=150m. solve the triangle Completely ​

Answers

Using sine law and cosine law, the value of the missing sides are

B = 17.94°, C = 124.03° and c = 403.57m

What is the value of the missing sides?

To solve the missing side, we have to use the sine angle formula.

The law of sine or the sine law states that the ratio of the side length of a triangle to the sine of the opposite angle, which is the same for all three sides.

The formula is given as;

a / sin A = b / sin B

A = 38° 18' = 38.03°

Substituting the values into the formula

300 / sin 38.03 = 150 / sin B

sin B = 150 * sin 38.03 / 300

sin B = 0.3080

B = sin⁻¹(0.3080)

B = 17.94°

From the sum of angles in a triangle;

A + B + C = 180°

38.03 + 17.94 + C = 180

C = 124.03°

Using cosine rule;

c² = a² + b² - 2(a)(b)cos C

c² = 300² + 150² - 2(300)(150)cos 124.03°

c² = 162866.422

c = √162866.422

c = 403.57m

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for a data set of 98,67,100,88,90, the range is

Answers

Answer:33

Step-by-step explanation:Range=maximum minus minimum in data set

100 - 67 = 33

Answer:

33

Step-by-step explanation:

67, 88, 90, 98, 100 is the set in order from least to greatest.

Range is the largest number (100) minus the smallest number (67).

100 - 67= 33.

Thus, your answer is 33.

Megan says "when you square root a number, the answer is always smaller."
Show she is wrong.

Answers

Megan is wrong because the square root of a number can be either smaller or larger, depending on whether the number is less than or greater than 1.

Megan's statement that "when you square root a number, the answer is always smaller" is incorrect.

In fact, the square root of a number can be either smaller or larger than the original number, depending on the value of the number.

To demonstrate that Megan is wrong, let's consider a few examples:

Square root of 4:

The square root of 4 is 2.

In this case, the square root is smaller than the original number.

Square root of 1:

The square root of 1 is also 1.

Here, the square root is equal to the original number.

Square root of 9:

The square root of 9 is 3.

In this case, the square root is larger than the original number.

Square root of 16:

The square root of 16 is 4.

Again, the square root is larger than the original number.

From these examples, we can see that the square root of a number can be smaller, equal to, or larger than the original number.

It depends on the specific value of the number.

Megan's statement oversimplifies the relationship between a number and its square root.

In general, the square root of a number is a value that, when multiplied by itself, gives the original number.

It is not always smaller but rather a value that satisfies the mathematical relationship.

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Find the area if the following circle circumference = 280cm find r from c

Answers

[tex]\textit{circumference of a circle}\\\\ C=2\pi r ~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=280 \end{cases}\implies 280=2\pi r\implies \cfrac{280}{2\pi }=r\implies \cfrac{140}{\pi }=r \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2 ~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=\frac{140}{\pi } \end{cases}\implies A=\pi \left( \cfrac{140}{\pi } \right)^2 \\\\\\ A=\pi \cdot \cfrac{140^2}{\pi^2}\implies A=\cfrac{19600}{\pi }\implies A\approx 6238.87~cm^2[/tex]

Compare the functions shown below:

g(x)
f(x) = 7x + 3 tangent function with y intercept at 0, 2 h(x) = 2 sin(3x + π) − 1


Using complete sentences, explain which function has the greatest y-intercept.

Answers

Answer: The fuction with the greatest intercept is 0,2

Step-by-step explanation:

Find the area, i have a lot of problems finding the area in general. and i spent a lot of time trying to figure this out?

Answers

The total area of the composite figure is 51.5 square yards

Calculating the area of the figure

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

The composite figure

The total area of the composite figure is the sum of the individual shapes

So, we have

Surface area = 9 * 2 + 2 * 3 + 1/2 * (3 + 8) * 5

Evaluate

Surface area = 51.5

Hence. the total area of the figure is 51.5 square yards

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Which statement about the points (0, 3), (2, 8), (8, 2), and (0, 1) is true?
All but one of the points is on the x-axis.
The points (0, 3) and (0, 1) are located on the same axis.
All but one of the points are in Quadrant I.
The point (8, 2) is the closest to the x-a

Answers

The statement about the points (0, 3), (2, 8), (8, 2), and (0, 1) that is true is All but one of the points are in Quadrant I. Option C

How to determine the statement

The first quadrant, positioned at the upper-right area of the Cartesian plane, involves coordinates that have favorable values for both x and y.

The coordinates (0,3), (2,8), and (0,1) all fall under quadrant I since their x and y values are positive.

The point located in Quadrant IV can be identified as (8, 2) due to its positive x-coordinate and negative y-coordinate.

Hence, it can be said with precision that Quadrant I contains all but one point.

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If a conditional statement and its converse are both true, the statement is said to be biconditional. Which of this statements is biconditional? Explain.
a) If two angles are congruent, then they have the same measure.
b) If two angles are straight angles, then they are congruent.

Answers

The correct option is (a) "If two angles are congruent, then they have the same measure".If a conditional statement and its converse are both true, the statement is said to be biconditional. The biconditional statement is one that can be written in the form “p if and only if q” which means that it is only true when both p and q are true.

The biconditional statement of the given options is "If two angles are congruent, then they have the same measure".

Option a) If two angles are congruent, then they have the same measure is a biconditional statement. This statement is a biconditional because it is true for both its converse and inverse.

If two angles are congruent, they have the same measure and if two angles have the same measure, they are congruent. This statement is true in both directions.

It can be written as:Two angles are congruent if and only if they have the same measure.Therefore, the correct option is (a) "If two angles are congruent, then they have the same measure".

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A state offers specialty license plates that contain 3 letters followed by 2 numbers. License plates are assigned randomly. All license plates are equally likely. Find the number of possible license plates that can be issued using this system.

Answers

There are 17,576,000 possible license plates that can be issued using this system.

To calculate the number of possible license plates that can be issued using this system, we need to determine the number of options for each character in the license plate.

For the first character, there are 26 letters in the English alphabet. Therefore, we have 26 options for the first character.

Similarly, for the second and third characters, we also have 26 options each.

For the fourth character, there are 10 possible numbers (0-9).

And for the fifth character, we again have 10 possible numbers.

To find the total number of possible license plates, we multiply the number of options for each character together:

Number of possible license plates = Number of options for the first character × Number of options for the second character × Number of options for the third character × Number of options for the fourth character × Number of options for the fifth character

Number of possible license plates = 26 × 26 × 26 × 10 × 10

Calculating this expression gives us:

Number of possible license plates = 17,576,000

Therefore, there are 17,576,000 possible license plates that can be issued using this system.

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answer all three ASAP!!!!!!!!

Answers

The answers to the questions to one significant figure are

a. 4000

b. 2000

c. 10,000

How to find the answers

The problem can be solved using calculator

a

= 24 * 65 / 0.37

= 1608 / 0.37

= 4345.946

= 4000 to one significant figure

b. 71 * 8.2 / 0.22

= 2646.364

= 2000 to one significant figure

c. 49.3 * 11.1 / 0.053

= 10325.094

= 10000  to one significant figure

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The estimation of the following numbers rounded to one significant figure are:

a. 4,000

b. 3,000

c. 10,000

How to estimate to one significant figures?

[tex] \frac{24 \times 65}{0.37} [/tex]

[tex] = \frac{1560}{0.37} [/tex]

= 4216.216216216216

= 4000 to one significant figure.

[tex] \frac{71 \times8.2 }{0.22} [/tex]

[tex] = \frac{582.2}{0.22} [/tex]

[tex] = 2646.363636363636[/tex]

= 3,000 to one significant figure

[tex] \frac{49.3 \times 11.1}{0.053} [/tex]

[tex] = \frac{547.23}{0.053} [/tex]

[tex] = 10325.09433962264[/tex]

= 10,000 to one significant figure

Significant figures are digits 1 to 9

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The probability distribution below represents the probability of x number of males in a group who have a form of
color blindness.
X. P(x)
0 0.641
1 0.287
2 0.048
3 0.014
4 0.007
6 0.003
a.) Find the probability of exactly 1 male has a form of color blindness.

b.) Find the probability that 1 gr less males have a form of color blindness.
c.) Find the probability that more than 3 males have a form of color blindness.

Answers

Answer:

a

Step-by-step explanation:

i did it

What is the area of a right triangle with a height of six and one fourth yards and a base of 22 yards?

34 yds2
sixty eight and three fourths yds2
132 yds2
one hundred thirty seven and one half yds2

Answers

Answer:

68.75 square yards (rounded to the nearest hundredth).

Step-by-step explanation:

To find the area of a right triangle, we can use the formula:

Area = (1/2) * base * height

Given the height of 6 and one fourth yards (6 1/4) and a base of 22 yards, we can calculate the area as follows:

Area = (1/2) * 22 * (6 1/4)

To simplify the calculation, we can convert the mixed fraction 6 1/4 to an improper fraction:

6 1/4 = (4 * 6 + 1) / 4 = 25 / 4

Now we can substitute the values into the area formula:

Area = (1/2) * 22 * (25/4)

Next, we can simplify the expression by multiplying the numbers:

Area = (11/1) * (25/4)

Multiplying the numerators and denominators:

Area = (11 * 25) / (1 * 4)

= 275 / 4

To convert the fraction to a mixed number, we can divide the numerator by the denominator:

275 ÷ 4 = 68 remainder 3

Therefore, the area of the right triangle is:

Area = 68 3/4 square yards or 68.75 square yards (rounded to the nearest hundredth).

Among the options provided, the closest match is "sixty-eight and three fourths yds2".

Answer:

68.75 square yards

Step-by-step explanation:

Decimal operations

22.12 x 0.6 =

Answers

The product of 22.12 and 0.6 is indeed 13.272.

To compute the product of 22.12 and 0.6, we can perform the multiplication using the standard algorithm for decimal multiplication.

Multiply the decimal part (the digits after the decimal point) first.

0.12 x 0.6 = 0.072 (Multiply 12 by 6, which gives 72, and then move the decimal point two places to the left.)

Multiply the whole numbers.

22 x 0.6 = 13.2 (Multiply 22 by 6, which gives 132, and then move the decimal point one place to the left.)

Add the results from Step 1 and Step 2.

0.072 + 13.2 = 13.272

Therefore, when multiplying 22.12 by 0.6, the result is 13.272.

To verify the calculation, we can check by using estimation. 22.12 is approximately 22 and 0.6 is approximately 0.6. Multiplying 22 by 0.6 gives 13.2, which is close to our calculated result of 13.272. This further confirms that our multiplication is correct.

Hence, the product of 22.12 and 0.6 is indeed 13.272.

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1, 3, 9, 27, 81, 243, ?
Find pattern

Answers

Answer:

You're multiplying each of those numbers by 3.

Step-by-step explanation:

1 * 3 = 3

3 * 3 = 9

9 * 3 = 27
27 * 3 = 81

81 * 3 = 243

Each number is multiplied by 3.

1 x3=3 -> 3x3=9 -> 9x3=27 -> 27x3=81 and so on.

Happy to help; have a great day! :)

Find the x- and y-intercepts of the graph.

Answers

Answer:

see explanation

Step-by-step explanation:

the x- intercepts are the values of x where the graph crosses the x- axis

these occur at x = - 2 and x = 2

then x- intercepts are x = - 2 , x = 2

the y- intercept is the value of y where the graph crosses the y- axis

this occurs at y = 4

then y- intercept is 4

x intercept of a graph is the point(s) of the graph that intersects x-axis , y intercept of a graph is the point(s) of the graph that intersects y-axis .

x and y intersepts vary from graph to graph , a graph may have various x and y intersepts , a graph may have one x and y intersepts , or may don't have none of them , or may have only one of the intersepts

_______________________

In this graph

there are two x intersepts and one y intersept

x intersepts :

( 2 , 0 )

( -2 , 0 )

y intersept :

( 0 , 4 )

Rent for a 3 bedroom apartment is regularly $936 per month. Apartment management is offering one month free. If you sign a one year lease and apply the free month equally across months, how much is your new, monthly lease amount

Answers

Answer:

$858

Step-by-step explanation:

You are paying 11 months of rent for 1 year.

11 × $936 = $10,296

The total rent paid in 1 year for 11 months of rent is $10,296.

Divide the total by 12:

$10,296/12 = $858

The monthly amount averages to $858.

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And very comfortable bedsthey are too! But not more comfortable than we need, Ican tell you, comrades, with all the brainwork we have todo nowadays. You would not rob us of our repose, wouldyou, comrades? You would not have us too tired to carryout our duties? Surely none of you wishes to see Jonesback?"The animals reassured him on this point immediately,and no more was said about the pigs sleeping in theWhich statement supports the idea that this passage isan allegory for totalitarian propaganda?O The animals agree that they do not wish to see Jonesback.O The animals want the pigs to sleep in the farmhousebeds.O The animals support the pigs' decision to sleep anextra hour.O The animals do not complain about pigs in powerbreaking rules. what is the similarities between Apple and Tesla two competitor help answer the question A consumer with the utility function U(x 1 ,x 2 )=x 1 2 x 2 3 faces prices p 1 =4,p 2 =5 and has an income of $200. Compute the effect of an infinitesimally small increase in income on the consumer's maximized utility. Hint: Lagrange. Given the first five terms of the sequence {a n}, determine the next two terms of sequence, find a recurrence relation that generates the sequence, including an initial value with the first index, and find the explicit formula that generates the nth term of the sequence. {a n}={(1, 31, 91, 271, 811,)} develop a conceptual hydrogeological model, that monitors subsurface variations in water distribution through superconducting gravimeters (SG) records to sustainable manage groundwater resources. In order to build this conceptual model, the characterisation of the hydraulic properties of the aquifer and the geology of Sutherland will be considered. A white to colorless mineral with a glassy to greasy luster, easily able to scratch glass, leaves no streak (but scratched the streak plate), fractures (no cleavage) is A black mineral is really shiny but you not sure if its a metallic or non-metallic luster but it leaves a white to very pale gray streak, is barely able to scratch glass, you're not sure it it has cleavage or not but there are some small flat faces, looks splintery (like wood grain) is A white to light gray mineral with a glassy non-metallic luster, leaves a white streak, scratches glass, appear blocky with 2 planes of cleavage, has some parallel grooves on one of the flat surfaces is A dark gray, bluish tinted mineral with a glassy non-metallic luster, scratches glass, leaves a white streak, has 2 planes of cleavage with a blocky appearance, has a blue/green/yellow iridescence like mother-of-pearl is A black mineral with a slight green tint appears to have a mostly dull non-metallic luster, scratches glass, leaves a white streak, you can't tell if it has cleavage or not but there are a few flat surfaces with a blocky appearance is A tan colored mineral is really shiny but it leaves a white streak, Doesn't scratch your fingernail, has 1 really good plane of cleavage (peels into flexible sheets), looks like cellophane is A pink to salmon colored mineral with a glassy luster, scratches glass, leaves a white streak, looks blocky with 2 planes of cleavage, and a look of interwoven fabric is A brown to black mineral with a really shiny luster, you think it is metallic but it leaves a pale tan streak, it barely scratches your fingernail, has 1 good plane of cleavage (peels into flexible sheets) is [ Select ] biotite calcium plagioclase feldspar augite potassium feldspar (K-spar) sodium plagiclase feldspar hornblende quartz muscovite 1 2 3 4 5 6 7 8 9 10 What is the most specific name that can be given to a figure with the following coordinates? (10, 8), (7, 13), (3, 7), and (0, 2) A. rectangle B. square C. trapezoid D. parallelogram Illustrate the difference between maintenance, reliability and reliability centred maintenance by means of examples. (6) Differentiate between evident and hidden function by means of examples. There are different categories of secondary functions. By means of examples, illustrate the functions of any asset of your choice that indicates: 1.2 1.3 1.3.1 appearance; 1.3.2 efficiency: 1.3.3 containment. Please note: examples taken from the textbook will not be considered. Can you tell from the following information which of the following three bonds will have the greatest price volatility, assuming that each is trading to offer the same yield to maturity?Bond Coupon Rate (%) Maturity (years)x 8 9y 10 11z 11 12 Find the equation of the straight line that passes through the points (1, 8) and (5, 0).Give your answer in the form of = + .tysm Choose five accurate controls for data processing.