If using the method of completing the square to solve the quadratic equation x^2-9x+2=0 which number would have to be added to "complete the square"?

Answers

Answer 1

The number that would have to be added to complete the square is 81/4.

What is a Quadratic Equation ?

Quadratic equations are polynomials of degree 2 , It is represwented by ax² + bx +c = 0.

The quadratic equation given is

x² -9x +2 = 0

x² -9x + (81/ 4) - (81/4) + 2 = 0

x² -9x + (9/2)² - (81/4) +2 = 0

(x - 9/2)²  - (73/4) = 0

Therefore , 81/4 will be added to complete the square to solve the quadratic equation.

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Related Questions

Find the values or x and z

Find the values or x and z

Answers

The values of x and z° are x = 14 and z = 12° , respectively.

Describe Angles?

In geometry, an angle is a measure of the amount of rotation between two intersecting lines or line segments. It is typically measured in degrees or radians. Angles are important concepts in geometry as they help us to understand and describe the relationships between different geometric figures.

An angle is formed by two rays or line segments that share a common endpoint called the vertex of the angle. The rays or line segments are referred to as the sides of the angle. The size of an angle is determined by the amount of rotation between the two sides, measured in degrees or radians.

Vertical opposite angles are congruent, which means that:

6x - 6 = 9x - 48

Simplifying this equation, we get:

3x = 42

Dividing both sides by 3, we get:

x = 14

Now we can use the value of x to find the measure of the adjacent angle z:

z = 180 - (6x - 6 + 9x - 48)

Simplifying and substituting x = 14, we get:

z = 180 - (6(14) - 6 + 9(14) - 48)

z = 180 - (84 - 6 + 126 - 48)

z = 180 - 168

z = 12°

Therefore, the values of x and z are x = 14 and z = 12° , respectively.

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For the given figure we used the angles of intersecting lines, the values of x is 14 while the value of z° is 102°.

Describe Angles?

In geometry, an angle is a measure of the amount of rotation between two intersecting lines or line segments. It is typically measured in degrees or radians. Angles are important concepts in geometry as they help us to understand and describe the relationships between different geometric figures.

An angle is formed by two rays or line segments that share a common endpoint called the vertex of the angle. The rays or line segments are referred to as the sides of the angle. The size of an angle is determined by the amount of rotation between the two sides, measured in degrees or radians.

Since the vertical opposite angles are equal, we can set them equal to each other and solve for x:

6x - 6 = 9x - 48

Subtracting 6x from both sides, we get:

-6 = 3x - 48

Adding 48 to both sides, we get:

42 = 3x

Dividing by 3, we get:

x = 14

Now, we can find the value of angle z:

angle z + (6x - 6) = 180                     [Linear pair]

Substituting x = 14, we get:

angle z + 78 = 180

Simplifying, we get:

angle z = 180 - 78

angle z = 102°

Therefore, x = 14 and angle z = 102°.

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What is the value 8+(-3)

Answers

Answer:

5

Step-by-step explanation:

8 + (-3)  is basically 8 - 3, which is 5.

Remove parentheses.
8−3

Subtract 3 from 8.
5

cost of sweaters
2
4
7
9
Number
Cost ($)
38
76
133
171
The rate of change is what ?

Variable
constant, $38/2 sweaters
constant, $19/sweater
constant, $57/3 sweaters

Answers

Answer:

I would say constant, $19/sweater. The table doesn't go up by 2s or 3s.

Step-by-step explanation:

5. Evaluate the expressions.
(-3)⁰ = -(4/9)⁰ =

Answers

Answer:

1

Step-by-step explanation:

anything to the power of 0 is equal to 1

Hopes this helps please mark brainliest

10) The ratio of a basketball players completed free throws to attempted free throws is 9 to 12. If she
attempted 20 free throws, find how many free throws she cömpleted.
F 15 free throws
G
16 free throws
H 8 free throws
J 11 free throws

Answers

If the ratio of a basketball players completed free throws to attempted free throws is 9 to 12. If she attempted 20 free throws, the number of  free throws she completed is 27 free throws.

How to find the number of completed free throws?

Given data:

Attempted free throws = 9 to 12

Free throws = 20

Formulate

9/12= 20/x

Cross-multiply

9x = 20× 12

9x = 240

Divide both side by 9x

x = 240/9

x = 26.6

x = 27 free throws (Approximately)

Therefore the free throws is 27.

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PLEASE HELP ASAP WITH MATH WILL GIVE BRAINLIEST!!!

PLEASE HELP ASAP WITH MATH WILL GIVE BRAINLIEST!!!

Answers

Answer:

A student needs to take 10 dance classes to learn it

Step-by-step explanation:

HELP PLEASE!!!
14 + 3x = 8x − 3(x − 4)
Also show work

Answers

Answer:

x=1

Step-by-step explanation:

14+3x=8x-3(x-4)

HELP PLEASE!!!14 + 3x = 8x 3(x 4) Also show work

Samira is playing a game with the spinner shown.
What is the theoretical probability that the pointer will land in a section labeled with the letter J?

Samira is playing a game with the spinner shown.What is the theoretical probability that the pointer

Answers

Answer:

2/10 or 1/5

Step-by-step explanation:

there are 10 equal 'slices'

then count those with a J

that would be 2

Karl wants to raise money for charity. He designs a game for people to play.
Karl uses a ten sided dice for the game. The dice is numbered 1 to 10.
Each person will roll the dice once. A person wins the game if the dice lands on a multiple of 4.
Ali plays the game once,
a) Work out the probability that Ali will win the game.
(2 m

Answers

Answer:

0.2 = 20% probability that Ali will win the game.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Total outcomes:

The 10 sides that the dice can land, which means that \(T = 10\)

Desired outcomes:

Sides that are multiple of 4, that is, side 4 and side 8, so \(D = 2\)

Work out the probability that Ali will win the game.

\(p = \frac{D}{T} = \frac{2}{10} = 0.2\)

0.2 = 20% probability that Ali will win the game.

Solve for x, given that point R is between points Q and S and QR = 6x-20 and RS = 5x-24 and QS = 55.

Answers

Answer:

x = 9

Step-by-step explanation:

QR + RS = QS

6x - 20 + 5x - 24 = 55

11x - 44 = 55

11x = 99

x = 9                <--- This is the answer

Hope this helps!

Determine if the following argument always applies, sometimes applies, or never applies. Provide at least 2 examples in your explanation.

"The sum of a number and its opposite is always 1."

Answers

Answer:

Never applies

Step-by-step explanation:

Given

Argument: The sum of a number and its opposite is always 1

Assume a positive number x

The opposite of the number is negative x (i.e. -x)

The sum of both numbers is:

\(Sum = x + (-x)\)

Open Bracket

\(Sum = x -x\)

\(Sum = 0\)

Now, take for instance.

\(Number = 5\)

Opposite would be

\(Opposite = -5\)

Their sum is:

\(Sum = 5 + (-5)\)

\(Sum = 5 -5\)

\(Sum = 0\)

Another instance is:

\(Number = -8\)

Opposite would be

\(Opposite = 8\)

Their sum is;

\(Sum = -8 + 8\)

\(Sum = -0\)

Hence, the argument never applies because the sum is never 1

Fill in the blank if point A always begins at 45 and point B at 69.
A) Points A and B are units apart.
b) If A moves 2 units to the right, and B moves 2 units to the left, the points will be ______ units apart.
c) If A moves 2 units to the left, and B moves 2 units to the right, the points will be _____ units apart.
D) If A moves 10 units to the right, and B moves 10 units to the left, the points will be _____ units apart.
e) If A moves 12 units to the right, and B moves 12 units to the left, the points will be _____ units apart.
f) A moved units to the left, B moved the same number of units to the right, and the points became 48 units apart.​

Answers

Using simple Subtraction, following is the required data.

point A always begins at 45 and point B at 69,

b) If A moves 2 units to the right, and B moves 2 units to the left, the points will be 20 units apart. (47 - 67)

c) If A moves 2 units to the left, and B moves 2 units to the right, the points will be 28 units apart. (43 - 71)

D) If A moves 10 units to the right, and B moves 10 units to the left, the points will be 4 units apart. (59 - 55)

e) If A moves 12 units to the right, and B moves 12 units to the left, the points will be 0 units apart.

f) A moved units to the left, B moved the same number of units to the right, and the points became 48 units apart.​

Where Can Subtraction Be Used?

We frequently employ subtraction in our daily lives. Subtraction is used, for instance, to determine how much money was spent on the products we purchased, how much money is still in our possession, or how much time is left to complete a task.

Subtraction can be applied in a variety of real-world situations.

Assume you had five apples and your friend had three. The number of remaining apples may be determined by subtracting: 5 - 3 = 2. Therefore, you are left with 2 apples. Similar to the previous example, if a class has 16 students, 9 of them are girls, we can determine the number of boys in the class by deducting 9 from 16. (16 - 9 = 7). There are 7 lads in the class, as far as we know.

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When the scale factor is 1, what is the ratio of the side length of the side opposite ∠A and the length of the hypotenuse?

Answers

when the scale factor is 1, we have:

(side length of side opposite ∠A) / (length of hypotenuse) = sin A

When the scale factor is 1, the ratio of the side length of the side opposite ∠A to the length of the hypotenuse remains the same as in the original triangle. In a right triangle, the side opposite ∠A is referred to as the "opposite" side, and the hypotenuse is the longest side.

The ratio of the side length of the side opposite ∠A to the length of the hypotenuse is commonly known as the sine of angle A (sin A). So, when the scale factor is 1, the ratio of the side length of the side opposite ∠A to the length of the hypotenuse is equal to sin A.

In mathematical terms, when the scale factor is 1, we have:

(side length of side opposite ∠A) / (length of hypotenuse) = sin A

It's important to note that this ratio holds true for any right triangle, regardless of its size or dimensions, as long as the angle A remains the same.

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3/4x=21 Can you please assist?

Answers

Answer:

x =28

Step-by-step explanation:

Divide the numbers

Combine multiplied terms into a single fraction

Eliminate fraction denominators

Simplify

Divide both sides of the equation by the same term

3/4x=21 Can you please assist?

48 ounces to 5 pounds in simplest form

Answers

3lbs. hope this helps

I need help!!!!!!!!!

I need help!!!!!!!!!

Answers

Answer:

its b4 + 7b3 + 4b2 + b5 + 7b4+ 4b3= b5+8b4+11b3+4b2

Answer:

When multiplying, add the exponents, (example) remember if there is "7b" the exponent is one.

Multiply b^2 * b^3 = b^5  (add the exponent 2 + 3 = 5)

Multiply 7b * b^3 = 7b^4 (the exponent of 7b is one, add 1 + 3 for the exponent to become 4)

Multiply 4 * b^3 = 4b^3 (4 doesn't have a variable, the exponent will be 3)

b^2 * b*2 = b^4 (add exponents)

7b * b^2 = 7b^3 (add the exponents 1 + 2)

4 * b^2 = 4b^2

              b^2             +               7b             +        4

b^3           b^5              +           7b^4            +   4b^3

+                                                                                      

b^2           b^4             +           7b^3            + 4b^2

b^5 + 7b^4 + 4b^3 + b^4 + 7b^3 + 4b^2

\(b^5 + 7b^4 + 4b^3 + b^4 + 7b^3 + 4b^2\)

b^5 + 8b^4 + 11b^3 + 4b^2

When a transversal cuts parallel lines, how can one angle measurement be used to determine all of the other measurements?

Answers

Answer: If two parallel lines are cut by a transversal, then corresponding angles are congruent.

Step-by-step explanation:

Find the term that must be added to the equation x2−8x=3 to make it into a perfect square. A. -3 B. 16 C. 64 D. 32

Answers

Answer:

  B.  16

Step-by-step explanation:

The linear term of a perfect square quadratic trinomial is twice the product of the roots of the leading term and the constant. That means the constant is the square of half the coefficient of the linear term.

Completing the square

The coefficient of the linear term is -8. The square of half that is ...

  (-8/2)² = 16

The constant that must be added is 16:

  x² -8x +16 = 3 +16

  (x -4)² = 19

V=T+ab How do you Solve for A

Answers

After rearranging the formula to get a on one side you get:

a = (V-T)/b

Solve for the angles of the triangle described below. Express all angles in degrees and round to the nearest hundredth.a = 6, b = 6,C = 8l

Solve for the angles of the triangle described below. Express all angles in degrees and round to the

Answers

ANSWER:

A = 48.19°

B = 48.19°

C = 83.62°

STEP-BY-STEP EXPLANATION:

Given:

a = 6, b = 6, c = 8

We can calculate the angles by means of the law of cosines, just like this:

\(A=\cos^{-1}\left(\frac{b^2+c^2-a^2}{2bc}\right)\)

We apply in each case to calculate the 3 angles, as follows:

\(\begin{gathered} A=\cos^{-1}\left(\frac{6^2+8^2-6^2}{2\left(6\right)\left(8\right)}\right)=\cos^{-1}\left(\frac{2}{3}\right) \\ \\ A=48.19^{\circ\:} \\ \\ B=\cos^{-1}\left(\frac{6^2+8^2-6^2}{2\left(6\right)\left(8\right)}\right)=\cos^{-1}\left(\frac{2}{3}\right) \\ \\ B=48.19^{\operatorname{\circ}} \\ \\ C=\cos^{-1}\left(\frac{6^2+6^2-8^2}{2\left(6\right)\left(6\right)}\right)=\cos^{-1}\left(\frac{1}{9}\right) \\ \\ C=83.62^{\circ\:} \end{gathered}\)

Therefore, the angles are the following:

A = 48.19°

B = 48.19°

C = 83.62°

1/8 divided by 1/3 =

Answers

Answer:

1/8 divided by 1/3 = 3/8

Step-by-step explanation:

Answer:

3/8

Step-by-step explanation                          

sorry if it wrong have a good day/night ;)

The following system has a solution: x = 10, y = -3, z = 14. 3x + 7y - z = -5, 9x - y - 4z = 17, 5x - 12y - z = 0

Answers

Answer:

0

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

I got it right on edge

Question 16 of 25
Use the zeros and the labeled point to write the quadratic function shown in
the graph
30
(1,8)
O A. y=2x2+2x– 12
O B. y=-2 - X+6
O C. y=-272 - 2x + 12
O D. y=x+x-6
SUBMIT

Question 16 of 25Use the zeros and the labeled point to write the quadratic function shown inthe graph30(1,8)O

Answers

Answer:

x+x-6

Step-by-step explanation:

The correct statements describing the given functions are -

The domain of h⁻¹(x) is the range of h(x).The x-coordinate of the x-intercept of h⁻¹(x) is the y- coordinate of the y-intercept of h(x).The maximum of h(x) is the largest x-value of h⁻¹(x).

What is function?

A function is a relation between a dependent and independent variable. We can write the examples of functions as -

y = f(x) = ax + b

y = f(x, y, z) = ax + by + cz

Given are the functions. It is asked to identify the statements that describe these functions.

The given functions are h(x) and its inverse h⁻¹(x). For the given functions, as we can see in the table, the following statements are true -

The domain of h⁻¹(x) is the range of h(x).The x-coordinate of the x-intercept of h⁻¹(x) is the y- coordinate of the y-intercept of h(x).The maximum of h(x) is the largest x-value of h⁻¹(x).

Therefore, the correct statements describing the given functions are -

The domain of h⁻¹(x) is the range of h(x).The x-coordinate of the x-intercept of h⁻¹(x) is the y- coordinate of the y-intercept of h(x).The maximum of h(x) is the largest x-value of h⁻¹(x).

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Can anyone help me out with this? (recursive formulas)

Can anyone help me out with this? (recursive formulas)

Answers

Step-by-step explanation:

\(b(1) = 4\)

Since this is an arithmetic sequence, notice that if you subtract b(1) (i.e., 4) from b(2)(i.e., 22), you get 18. Likewise, if you subtract b(2) from b(3) you also get 18. Therefore,

\(b(n) = b(n-1) + 18\)

Real World Systems
1. Members of a drama club spend $795 on T-shirts and sweatshirts for a play. They purchase 20 more T-shirts than
sweatshirts. They buy T-shirts for $12 each and sweatshirts for $25 each.
How many T-shirts do the drama club members buy?
A
15 T-shirts
B.
21 T-shirts
с
22 T-shirts
D.
35 T-shirts

Answers

The correct answer is A

PLEASE HELLPPPP !!!!!!!!!!!!!!!

PLEASE HELLPPPP !!!!!!!!!!!!!!!

Answers

Answer:

he earns $75

Step-by-step explanation:

E(3)=25*3

E(3)= $75

!

A washer and dryer cost a total of 928$. The cost of the washer is three times the cost of the dryer. Find the cost of each item.

Answers

Answer:

Cost of Washer = $696

Cost of Dryer = $232

Step-by-step explanation:

Start by making and equation, put a variable for the missing prices, let's say the cost of the dryer is 'x' and since the cost of the washer is three times, it will be '3x'.

Put the equation together, so we can add the x variables together.

3x + x = 4x

The total cost will be what the '4x' is equal to.

4x = 928

Going back to algebra, we solve the equation by dividing both sides by 4.

x = 232

Remember x is the variable we gave to the dryer, so now we must find the cost of the washer. In order to do this, we will have to multiply it by 3.

3x

3(232) = 696.

To check the answer, we can add them together to make sure we get the total cost.

696 + 232 = 928

Write an explicit formula for an, the nth term of the sequence 30, 35, 40

Answers

Answer:

The sequence is increasing by 5 at each step. So, we can write:

a1 = 30

a2 = 30 + 5 = 35

a3 = 30 + 25 = 40

a4 = 30 + 35 = 45

a5 = 30 + 4*5 = 50

We notice that the nth term is given by:

an = 30 + (n-1)5

So, the explicit formula for the nth term is:

an = 25n + 5

(5,1) (3,2)
Write the equation in Slope Intercept Form​

Answers

Answer:

-1 / 2

Step-by-step explanation:

just submit that

Leah ran the track 8 times. She ran a total of 2,000 meters. How many meters equals 1 lap?

Answers

Answer:

250m

Step-by-step explanation:

2000m/ 8laps = 250m

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