Solve by completing the square

Solve By Completing The Square

Answers

Answer 1

[tex]4x^2+12x=32\\\\\implies x^2+3x=8\\\\\implies x^2 +2 \cdot \dfrac 32 \cdot x+\left(\dfrac 32 \right)^2 - \left(\dfrac 32\right)^2 =8\\ \\\implies \left(x+\dfrac 32 \right)^2 = 8 + \dfrac 94 = \dfrac{41}4\\\\\implies x+\dfrac 32 = \pm\dfrac{\sqrt{41}}2\\\\\implies x = \pm \dfrac{\sqrt {41}}2 - \dfrac 32\\\\\text{The roots are}~ x = -\dfrac 32-\dfrac{\sqrt{41}}2~ \text{and}~~ x = -\dfrac 32+\dfrac{\sqrt{41}}2[/tex]


Related Questions

Whcih choice best describes the group this shape belongs in, based on the kinds of sides and angles it has? Angela chose A as the correct answer. How did she get that answer?

Answers

The shape in the figure has 6 sides

The choice that describes the group the shape belongs to is (a) parallel sides, acute angles

How to determine the group of the shape?

From the figure, we have the following highlights

The shape has 6 sidesThe direct opposite sides are equalThe direct opposite sides are parallelThe measure of angles between adjacent sides are less than 90 degrees i.e. acute angles

The above highlight mean that:

The shape belongs to parallel sides, acute angles group of shapes

Hence, Angela's conclusion is correct

Read more about polygons at:

https://brainly.com/question/1592456

What is the equation of a circle with center (−8, 3) and radius 8?

(x + 8)2 + (y − 3)2 = 64

(x − 8)2 + (y + 3)2 = 64

(x − 8)2 + (y + 3)2 = 8

(x + 8)2 + (y − 3)2 = 8

Answers

Answer:

(x + 8)² + (y - 3)² = 64

Step-by-step explanation:

(x - (-8))² + (y - 3)² = 8²

(x + 8)² + (y - 3)² = 64

If 6/10 is multiplied by a fraction less than one what will be the product?

Answers

Answer:

If 6/10 is multiple by a fraction less then one the product would be 1/2

Step-by-step explanation:

6/10 is also equal to 0.6

If 0.6 is multipled by something less then one the product would not be able to be greater then 6/10

Resulting in 1/2 being the product.

Answer: All you gotta do is multiply 6x10 and then u get 60 so the product of of 6/10 is 60


Shahida has seen an eagle landing at the top of the tree in her backyard. She places a camera on a tripod a distance of 12 feet from the
trunk of the tree. She angles the camera to the top of the tree so she can get a picture of the eagle. The height of the tree is 31 feet. The
height of the tripod is 4 feet.

Answers

The angle of elevation from the tripod to the top of the tree is about 66 degrees

What is trigonometric ratio?

Trigonometric ratio is used to show the relationship between the sides and angles of a right angled triangle.

Let Ф represent the angle of elevation. Since the tripod is at a height of 4 feet, hence:

tanФ = (31 - 4) / 12

Ф = 66 degrees

The angle of elevation from the tripod to the top of the tree is about 66 degrees

Find out more on trigonometric ratio at: https://brainly.com/question/24349828

Darren's rectangle measures 3 1/4 units by 4 1/3 units. what is its area

area = ? ?/?

Answers

Answer:

14 1/13

Step-by-step explanation:

13/4*13/3=169/12=14 1/13

[tex]x^{2} -36\frax+5/(x+6)[/tex]

Answers

the answer is

x^{2}-31x+5b

Find the values of x for which the denominator is equal to zero for 2x^2+5/x^2-2x .

x = 0, x = 2

x = 1, x = 2

none

x = 2

Answers

Let's see

[tex]\\ \rm\rightarrowtail x^2-2x=0[/tex]

[tex]\\ \rm\rightarrowtail x(x-2)=0[/tex]

[tex]\\ \rm\rightarrowtail x=0\:or\:x-2=0[/tex]

[tex]\\ \rm\rightarrowtail x=0\:or\:x=2[/tex]

꧁⫷ᴀɴsᴡᴇʀ⫸꧂

[tex] \green{••••••••••••••••••••••} \blue{••••••••••••••••••••••••••}[/tex]

[tex] \sf {x^2 - 2x = 0} [/tex]

[tex] \sf {x ( x - 2) = 0} [/tex]

[tex] \sf {x = 0 \: or \: x-2 = 0} [/tex]

[tex] \sf \green{ {x = 0 \: or \: x = 2}} [/tex]

#CarryOnLearning

#LibreAngMatuto

hello help me with this question thanks in advance​

Answers

Answer:

B. 98 ft

Step-by-step explanation:

x^2 + y^2 = z^2

z = sqrt(84^2 + 50^2) = 97.7 ft ~ 98 ft

Question #5 Answer:

B. 98 feet

Step by-step explanation:

[tex]Solution:\ From\ question\\ 84\ feet\ long\ and\ 50\ feet\ wide\\ so\ he\ will\ run\ \sqrt{{84}^2+{50}^2}\ \approx98\ feet[/tex]

Need help Please! Quick

Answers

Answer:

please see photo for details

6 8/10 + 1 7/10 =
please help meee

Answers

Answer:

8.2

Step-by-step explanation:

Hope this helps....

Answer:

The answer is 8 1 / 2

Step-by-step explanation:

See the Image

Option 1 is easier to understand

The dimensions of triangle A are three times the dimensions of triangle B. The area of triangle B is 28 cm What is the area of triangle A? ​

Answers

Answer:

Below in bold.

Step-by-step explanation:

The ratio of theire areas is  1^2 : 3^2

= 1:9.

So the area of triangle A = 28 * 9

= 252 cm^2.

Answer:

[tex]252cm {}^{2} [/tex]

step by step explanation:

[tex]since \: \: dimension \: of \: traiangle \: a \: = 3 times \: dimension \: of \: triangle \: b \\ note \: that \: area \: is \: square \: of \: dimension \: \\ therefore \: area \: of \: triangle \: a \: = 3 {}^{2} \: area \: of \: triale \: \: b \\ area \: of \: trianle \: a = 9 \times 28 = 252cm {}^{2} [/tex]

jan saw 9 full moons in 252 days write each statement as a rate

Answers

i honestly don’t know sorry

simplify the expression 30x^6/3x^-2​

Answers

Answer:

[tex]30x^{4}[/tex]

Step-by-step explanation:

April is 19, Bryan is 20, Carla is 20, and Dave is 21, how old is Erica is the average of their given ages is 23?

Answers

Answer: 35

Step-by-step explanation:

     The average can be found by adding their ages together and dividing by the number of ages.

     Given:

[tex]\frac{19+20+20+21+x}{5}[/tex] = 23

     Multiply both sides of the equation by 5:

19 + 20 + 20 + 21 + x = 115

     Combine like terms:

80 + x = 115

     Subtract 80 from both sides of the equation:

x = 35

                    Erica is 35.

Find the greatest common factor (GCF) of 12x and 18x3.

Answers

Answer:

the answer to that question is 6x squared.

Step-by-step explanation:

Answer:

6x

Step-by-step explanation:

12x and 18x3

first, simplify 18x3

12x and 54x

Now, cancel the x, we'll add it on in the end

12 and 54

Factor it!

(2 * 3 * 2) and (2 * 3  * 3 * 3)

2 and 3 remain common, so multiply = 6

Add on x from before.

6x is the answer.

Express the set using interval notation.
x≥1

Answers

Answer:

[1,∞)

Step-by-step explanation:

Brackets indicate equal to while parentheses indicate not equal to this bound.

Is ABSE- ATES? If so, identify the similarity postulate or theorem that
applies.

Answers

Hope it helps best of luck

BCD and EFG are shown below. Which of the following statements is true? Look at picture.

Answers

Answer:

  (b)  ∠EGF ≅ ∠BDC

Step-by-step explanation:

Angles D and G are both marked with double arcs, indicating they are congruent:

  ∠EGF ≅ ∠BDC

__

Other choices:

BD is the short segment between the marked angles. It has no "decoration." EF is the longer segment with a single hash mark decoration. These are not corresponding parts, so are not congruent. There is no right angle in these triangles, so the Pythagorean theorem is not applicable.

__

CD is the longest side, with no decoration. EF is the middle-length side with a single hash mark decoration. These are not corresponding sides.

Answer:

I don't know I'm sorry soo just try to work it out if u don't know how than ask someone you know okay, ur welcome.

axis of symmetry f(x) = −4(x − 8)^ 2 + 3

Answers

Answer:

[tex]x=8[/tex]

Step-by-step explanation:

For an equation in the form of [tex]y=a(x-h)^2+k[/tex], the axis of symmetry is where [tex]x=h[/tex]. In this case, the axis of symmetry is the line [tex]x=8[/tex]

The hypotenuse of a triangle is 10 inches long. One of the legs is 6.5 inches long. what is the measurement of the missing leg? round to the nearest tenth, if necessary

Answers

Answer:

7.6

Step-by-step explanation:

a^2 + b^2 = c^2

6.5^2 + x^2 = 10^2

42.25 + x^2 = 100

isolate x by subtracting 42.25 on both sides

x^2 = 57.75

square root of 57.75 or 7.6

prove that it is congruent​

Answers

Answer:

The dashes on the side lengths mean that they are equal in length
⇒ PQ = RP

The triangles share one side PS

The figure also states that m∠QPS = m∠RPS

Therefore, the triangles are SAS congruent since they have two pairs of congruent sides and a congruent included angle.

a family makes gumbo to serve during jazz fest.the gumbo recipe requires twice as many cups of chopped tomatoes as diced onions.Which expression can be used to represent the number of cups of diced onions based on the number of cups of chopped tomatoes,t?
A) t^2
B)2+t
C) t÷2
D)2t

Answers

Answer:

D: 2t

Step-by-step explanation:

a coefficient next to a variable is an automatic multiplication equation

The solution is Option D.

The number of cups of diced onions A to the number of cups of chopped tomatoes t is represented by the equation A = 2t

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is given by

A = total number of cups of diced onions

Let the total number of cups of chopped tomatoes be = t

Now , the  recipe requires twice as many cups of chopped tomatoes as diced onions

Substituting the values in the equation , we get

A = 2t

where A = number of cups of diced onions

t = number of cups of chopped tomatoes

Therefore , the value of A is 2t

Hence ,

The equation will be A = 2t where t is the number of cups of  tomatoes

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ2

Select the correct answer.
Which of the equations below represents a line perpendicular to the x-axis?
OA
I = 3
OB.
= = 3y
Зу
Ос.
1 = Y
=
OD
r = -3y

Answers

Answer:

0D r equals -3y

hope ts helpful

Which number is bigger: 0.135 or 0.14?

Answers

0.14 is the correct answer

Help help her help help

Answers

Answer:

x = 12

Step-by-step explanation:

1. Subtract 9 from both sides:

x/6 = 2

2. Multiply both sides by 6:

x = 12

Answer:

9 + x/6 = 11

Always get rid of the constants first,

-9         -9(we subtract 9 from both sides because the inverse operation of addition is subtraction)

x/6 = 2

Isolate x by multiplying by 6 on both sides (because the inverse operation of division is multiplication)

*6    *6

x = 12

Jayla just measured her pet snake and found out that it is 3.8 inches long, which is 52% longer than the last time Jayla measured. How long was the pet snake last time?

Answers

Let x be the original length.
x * (1+0.52) = 3.8
x * 1.52 = 3.8
x = 2.5 inches

insurance that pays for damages to houses or businesses is called

Answers

Answer:

Homeowners insurance

Step-by-step explanation:

Homeowners insurance is designed to protect your home from what are called "perils." A peril is your exposure to risk or something that causes loss or destruction. … Homeowners 2 (HO2): This policy protects your property against 18 perils (including 11 perils from Homeowners 1). Typical homeowners insurance policies offer coverage for damage caused by fires, lightning strikes, windstorms and hail. But, it's important to know that not all natural disasters are covered by homeowners insurance. For example, damage caused by earthquakes and floods are not typically covered by homeowners insurance.

Select ALL the expressions that have the same value as the expression 0.5 ÷ 0.25
A. 1,200 ÷ 60
B. 1.2 ÷ 0.6
C. 0.012 ÷ 0.06
D. 2.5 ÷ 2.25
E. 0.05 ÷0.025

Answers

Answer:

B and E

Step-by-step explanation:

0.5 ÷ 0.25 = 2

A. NO because it's 20

B. Yes

C. NO because it's 0.2

D. NO because it's 1.1 repeating

E. Yes

Need help with this geometric question ASAP, Thank you

Answers

The error would be assuming the altitude is a bisector and divides the sides evenly.

PLEASE HELP AND EXPLAIN (WILL MARK BRAINLYIST)
Figure JKLMN is a scaled version of PQRST. The two figures are shown below.
The scale factor of figure JKLMN to figure PQRST is 3:2. If KL = 27 cm and MN = 45 cm, what is the length of side ST?
A.
30 cm
B.
40.5 cm
C.
67.5 cm
D.
18 cm

Answers

Answer: the answer is 40.5 cm

Step-by-step explanation:

first your gonna want to look at the numbers given and then solve.

Other Questions
if you add 3 mL of water to 1 ml of nadh mix and get an observance of 0.2 what is the concentration of the original nadh solution Below is a portion of a dictionary entry for the word type. Match the entry to the correct dictionary component.Typing 18.1 angles of rotation and radian measure answers Help help help help ASAP apa Please help me quick this is a 20 point grade!!!What is 1 + 1? A) Pi. B) 3.14C) 2 D) 9/8 Which number is irrational?80.80.461003 Answer the question in the screenshot Complete this proportion: 6/8 = a/12. what is the definition of inertia? (picture down below) brain boggling boggle help pls:) The potential difference across the terminals of a battery is 8. 4v when there is a current of 1. 50 a in the ba Please choose the correct form!!Por qu ______ t tantas empanadas antes de salir para la cena?A. comerasB. comiasC. comersD. comierasthank you!! Which of the following is an informal definition of dastardly? find the area of the shape below find the missing side length. Which part of the plot creates tension and suspense? A. Rising actionB. Falling actionC. ClimaxD. ResolutionIt is the element of a plat that the author introduces the characters and the setting. A. ConflictB. Rising actionC. ClimaxD. ExpositionConflict is the _____ presented in the narrative. A. AnswerB. SolutionC. ProblemD. ResponseThe part of the story that reveals the solution and takes care of the conflictA. ConflictB. Rising actionC. ResolutionD. ExpositionThis elements can be identified by decreasing tension, an approaching resolution. A. ResolutionB. Exposition C. Falling actionD. Climax_____ interrupts chronological order, it takes a reader back in time to the past events. A. FlashbackB. Chronological orderC. SequentialD. En medias resIt is a way of presenting a plot wherein the events in the story are arranged in orderA. Cause-effectsB. ChronologicalC. FlashbackD. En medias resRising action can be identify by increasing tension, emotion and difficulty? A. TrueB. FalseC. Sometimes D. A and B A number cube with a number 1 through 6 is rolled. find the probability of rolling a number greater than 3? In your own words describe how to find the perimeter of a shape with fractional sides used the rectangle below to example What is the volume of this right prism?720 in780 in1440 in1560 in Pls Hurry.What is the area of a rectangle with vertices (Negative 8, Negative 2), (Negative 3, Negative 2), (Negative 3, Negative 6), and (Negative 8, Negative 6)? ___ square units