Solve for x by completing the square. Round ur answer to the nearest thousandth. X^2+6x-3=0

Answers

Answer 1

Answer:

x = {2.196,  -8.196}

Step-by-step explanation:

x² + 6x - 3 = 0x² + 2*3*x + 3² - 3 = 3²(x + 3)² = 12x + 3 = ± √12x + 3 = ± 2√3x = 2.196, x = -8.196
Answer 2

Answer:

. X^2+6x-3=0

x²+6x+9-9-3=0

(x+3)²=12

x+3=√12

x=√12-3=0.46410161513


Related Questions

Identify the expression equivalent to 16x + 24y

1. 2 (8x + 24y)
2. 8 (8x + 3y)
3. 8 (2x + 3y)
4. 4 (2x + 6y)

Answers

Correct answer is 3: 8 (2x + 3y)
3. 8(2x + 3y)

I hope it helps you out

The data below represents the number of
runs scored in the last 14 games. Which
statement best describes the data?

A. The peak of the data is 3.
B. The data distribution is symmetrical.
C. The data distribution has several gaps.
D. The range of the data is 6.

Answers

The Answer is B
B is basically saying that the chart looks symmetrical and it does

SYMMETRICAL: the chart has about the same shape on either side of the middle.

Sophia's math class has 6 fewer boys than girls, and there are g girls. Write
an expression for the number of boys.

Answers

Answer:

g-6=b

hope this helps

Ximena just accepted a job at a new company where she will make an annual salary

of $50000. Ximena was told that for each year she stays with the company, she will

be given a salary raise of $3000. How much would Ximena make as a salary after 5

years working for the company? What would be her salary after t years?

Answers

Answer:

65,000

Step-by-step explanation:

3000 x 5 = $15,000

15,000 + 50,000 = 65,000

Answer:

$65000

50,000 + 3,000t

Step-by-step explanation:

What integer is closet to n​

Answers

Answer:

Rounding to the Nearest Integer

The most common type of rounding is to round to the nearest integer. The rule for rounding is simple: look at the digits in the tenth's place (the first digit to the right of the decimal point).

Need help. thank you

Answers

Answer:

x = 70.53 degrees

Step-by-step explanation:

equation:

cos-1 = [tex]\frac{adjacent}{hypotenuse}[/tex]

⇒ cos-1 x = [tex]\frac{4}{12}[/tex]

⇒ cos-1 x = 0.33

⇒ x = 70.528

round to the nearest tenth:

⇒ 70.53

X=70.53 ^^^^^ is correct

15. A rectangle has a length of 2x - 1 and a width of 3x + 7. Find the perimeter of this rectangle.
Then find the area of the rectangle.

Answers

Answer:

10x + 12 and 6x² + 11x - 7

Step-by-step explanation:

The perimeter (P) of a rectangle is calculated as

P = 2l + 2w ( l is length and w is width )

   = 2(2x - 1) + 2(3x + 7) ← distribute parenthesis

    = 4x - 2 + 6x + 14 ← collect like terms

     = 10x + 12

--------------------------------------------------

The area (A) of a rectangle is calculated as

A = lw

   = (2x - 1)(3x + 7) ← expand using FOIL

    = 6x² + 14x - 3x - 7 ← collect like terms

    = 6x² + 11x - 7

What is the radius of the inscribed circle of HJK?

Answers

Answer:

D) 22

Step-by-step explanation:

Since it gives you two rays just set them equal and solve for X.

6x - 14 = 3x +4

      +14        +14

6x = 3x + 18

-3x   -3x

3x = 18

/3    /3

x = 6

Then plug x into either one of the equations

6(6) - 14

36 - 14

22

Answer:

D. 22

Step-by-step explanation:

sin 20 = cos a Find a
Please be sure to show your work.​

Answers

Answer:

Step-by-step explanation:

cos a=sin20=sin (90-70)=cos 70

a=70°

¿Cuál es el inverso aditivo de -3?

Answers

Answer:

3 is the additive inverse of -3

Step-by-step explanation:

-3 + 3 = 0

Someone please help me!

Answers

Answer:

A = 58

B =:25

Step-by-step explanation:

C = A + B

83 = 9x + 4 + 4x + 1

83 = 13x + 5

13x = 78

x = 78/13

x = 6

A = 9x + 4 = 9 x 6 + 4 = 58

B = 4x + 1 = 4 x 6 + 1 = 25

whats 3x3+4 use pemdas ?

Answers

Answer:

13

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

First, we do 3x3 which is 9.

Then, we do 9+4=13

Hope this helps =]

What is the equation of the line that passes through the point (–2,1) and has a
slope of
3/2

Answers

Answer:

y = [tex]\frac{3}{2}[/tex] x + 4

Step-by-step explanation:

Find b and substitute for y = mx + b so

1 = 3/2(-2) + b

1 = -3 + b, so b = 1+3, b=4

Put it all together y = [tex]\frac{3}{2}[/tex] x + 4

Does anyone know the answer? I would really appreciate it!!

Answers

Answer:

B

Step-by-step explanation:

The answer is B hope that help

Write an equivalent ratio described in the situation below. The ratio of boys to girls is 5/2

Answers

Answer:

5: 2 or 10: 4

Step-by-step explanation:

as a ratio, this would be 5: 2.

Im not sure if it's asking you to also make a new ratio that fits this, but if it is you could multiply both sides by 2 to get

10 : 4

helps pls :-/
number 12
any help is greatly appreciated!

Answers

x = 5, that’s the answer to question 12

What is the square root of √25

Answers

Answer:

5 is the square root of 25

Step-by-step explanation:

Have a great day!

and can I maybe please have brainliest?

Thanks!

Answer:

5 is the square root of √25

Step-by-step explanation:

hope it helps you

Solve this equation. 1+1 = ?

Answers

Answer:

2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Show that the area of triangle DEF is 11 cm2.​

Answers

9514 1404 393

Explanation:

The length CD can be found from the Pythagorean theorem.

  CF² + CD² = DF²

  2² + CD² = (2√10)²

  CD² = 40 -4 = 36

  CD = √36 = 6

From here, any of several methods could be used to find the area of ΔDEF.

One of them is to subtract the areas of the triangles that are not ΔDEF from the area of the rectangle ABCD.

  area ABCD = bh = (6 cm)(5 cm) = 30 cm²

  area ΔADE = 1/2bh = 1/2(4 cm)(5 cm) = 10 cm²

  area ΔBEF = 1/2bh = 1/2(2 cm)(3 cm) = 3 cm²

  area ΔCDF = 1/2bh = 1/2(6 cm)(2 cm) = 6 cm²

Then the area of interest is ...

  area ΔDEF = area ABCD -area ΔADE -area ΔBEF -area ΔCDF

  area ΔDEF = (30 -10 -3 -6) cm²

  area ΔDEF = 11 cm²

__

Alternate solution

If we define A as the origin of a coordinate system, then the coordinates of the vertices of ΔDEF are ...

  D(0, 5), E(4, 0), F(6, 3)

The area can be computed as half the absolute value of the sum of the determinants of 2×2 matrices consisting of adjacent points.

  [tex]A=\dfrac{1}{2}\left|\left|\begin{array}{cc}0&5\\4&0\end{array}\right|+\left|\begin{array}{cc}4&0\\6&3\end{array}\right|+\left|\begin{array}{cc}6&3\\0&5\end{array}\right| \right|\\\\=\dfrac{1}{2}|(0-20)+(12-0)+(30-0)|=\dfrac{1}{2}(22) = \boxed{11}[/tex]

_____

Additional comment

The solution using coordinates is effectively equivalent to the computation of the area of trapezoid ABFD, less the areas of triangles EBF and AED.

can someone please help, I've been stuck on this for hours​

Answers

Answer:

i love ur profile pic

Step-by-step explanation:

and j

put a dot on 3 for the y side

what is the function of f(0)

Answers

Answer:

Steps:

1. The zero of a function is the x-value that, when plugged into a function, makes the function equal to 0.

2. f(x) means that we have a function of x.

3. The zero of the function f(x)=2x-2 is the x-value that makes f(x) = 0.

4. So we can just set the function equal to 0, and then solve for x!

Hope this helps

Step-by-step explanation:

Complete the Square
x2 + 10x +

Answers

Answer:

( + 10)

Hope this helps you out

What are the solutions to the system of the equations graphed below?

Answers

Answer:

D

Step-by-step explanation:

Where the graphs intersect each other is where the solution is. The graphs intersect each other at the points (0,-8) and (4,8). Hope this helps!

A (2,0) and (0,-8) because it’s shown in the picture that’s the red line indicates the place it needs to be in

I purchased a new book that was on sale for 40% off. I saved $24.00 because of the sale. What was the original price? (6 points)
Pls Answer I need it for my test thats due Monday

Answers

Answer:

60

Step-by-step explanation:

24 dividend by 4 equals 6.

this means 10% of the original price is 6.

6 times 10 equals 60

hope this helps!!!

Help pls ! This is trigonometric function

Answers

Answer:

Amplitude: 4

Period: π

midline: y = 1

Step-by-step explanation:

r(x) = -4 sin(2x) + 1

r(x) = a sin(bx + c) + d where |a| is the amplitude and |b| for the period

a = -4         |a| = 4 :   Amplitude = 4

b = 2          |b| = 2     period of sin(x) = 2π

                                period of sin(bx + c) = 2π/|b| = 2π/2 = π

range of sin(2x) ... -1 ≤ sin(2x) ≤ 1

range of -4 sin(2x) + 1: -4+1 ≤ -4 sin(2x) + 1 ≤ 4+1    

-3 ≤ -4 sin(2x) + 1 ≤ 5

midline: y = (-3 + 5) / 2 = 1        y = 1

                   

Answer:

Part A: The amplitude [tex]\displaystyle r[/tex]is [tex]\displaystyle 4.[/tex]

Part B: The period of [tex]\displaystyle r[/tex]is [tex]\displaystyle \pi.[/tex]

Part C: The equation of the midline of [tex]\displaystyle r[/tex]is [tex]\displaystyle y = 1.[/tex]

Step-by-step explanation:

[tex]\displaystyle \boxed{r(x) = -4cos\:(2x - \frac{\pi}{2}) + 1} \\ \\ r(x) = Acos(Bx - C) + D \\ \\ Vertical\:Shift \hookrightarrow D \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \\ Amplitude \hookrightarrow |A| \\ \\ Vertical\:Shift \hookrightarrow 1 \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \hookrightarrow \boxed{\frac{\pi}{4}} \hookrightarrow \frac{\frac{\pi}{2}}{2} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \hookrightarrow \boxed{\pi} \hookrightarrow \frac{2}{2}\pi \\ Amplitude \hookrightarrow 4[/tex]

OR

[tex]\displaystyle r(x) = Asin(Bx - C) + D \\ \\ Vertical\:Shift \hookrightarrow D \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \\ Amplitude \hookrightarrow |A| \\ \\ Vertical\:Shift \hookrightarrow 1 \\ Horisontal\:[Phase]\:Shift \hookrightarrow 0 \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \hookrightarrow \boxed{\pi} \hookrightarrow \frac{2}{2}\pi \\ Amplitude \hookrightarrow 4[/tex]

Keep in mind that although this IS a sine function, if you plan on writing your equation as a function of cosine, then there WILL be a horisontal shift, meaning that a C-term will be involved. As you can see, the centre photograph displays the trigonometric graph of [tex]\displaystyle r(x) = -4cos\:2x + 1,[/tex]in which you need to replase "sine" with "cosine", then figure out the appropriate C-term that will make the graph horisontally shift and map onto the sine graph [photograph on the left], accourding to the horisontal shift formula above. Also keep in mind that the −C gives you the OPPOCITE TERMS OF WHAT THEY REALLY ARE, so you must be careful with your calculations. So, between the two photographs, we can tell that the cosine graph [centre photograph] is shifted [tex]\displaystyle \frac{\pi}{4}\:unit[/tex]to the left, which means that in order to match the sine graph [photograph on the left], we need to shift the graph FORWARD [tex]\displaystyle \frac{\pi}{4}\:unit,[/tex]which means the C-term will be positive, and by perfourming your calculations, you will arrive at [tex]\displaystyle \boxed{\frac{\pi}{4}} = \frac{\frac{\pi}{2}}{2}.[/tex]So, the cosine graph of the sine graph, accourding to the horisontal shift, is [tex]\displaystyle r(x) = -4cos\:(2x - \frac{\pi}{2}) + 1.[/tex]So, with all that being said, to find the period, again, take a look at the above information next to [tex]\displaystyle Wavelength\:[Period].[/tex]Now, the amplitude is obvious to figure out because it is the A-term. Moreover, the midline is the centre of your graph, also known as the vertical shift, which in this case the centre is at [tex]\displaystyle y = 1,[/tex]in which each crest is extended four units beyond the midline, hence, your amplitude. Now, there is one more piese of information you should know -- the sine graph in the photograph farthest to the right is the OPPOCITE of the sine graph in the photograph farthest to the left, and the reason for this is because of the negative inserted in front of the amplitude value. Whenever you insert a negative in front of the amplitude value of any trigonometric equation, the whole graph reflects over the midline. Keep this in mind moving forward. Now, with all that being said, no matter how far the graph shifts vertically, the midline will ALWAYS follow.

I am delighted to assist you at any time.

Howard worked out the problem below and his answer is below. Is Howard correct? If not, where did he make his mistake? Explain and give the right answer.

What is 40% of 140?

4.8

Answers

Answer: 56

Step-by-step explanation:

Howard is incorrect the right answer is 56.

What is the HCF of 280, 112, and 140.​

Answers

Answer:

Step-by-step explanation:

First find prime factorization of the numbers

280=2^3(5)7

112=2^4(7)

140=2^2(5)7

So the HCF is 2^2(7)=4(7)

HCF=28

Hey can some one help me, Define a variable and write each phrase as an algebraic expression:

1. Six feet less than the width

2. 6 hours more per week than Theodore studies

3. Six years less than Tracy's age

4. 2 less than one-third of the points that the panthers scored​

Answers

Answer:

1. d - 6 ft

where d is the width

2. t + 6 h/week

where t is the amount of time per week Theodore studies

3. t’ - 6 a

where t’ is Tracy’s age

4. (k/3) - 2

where k is the points that the panthers scored

Step-by-step explanation:

Write the variable and do the operations as described!

“less than” means subtraction, “more […] than” means addition and “one-third of” means division by 3.

Is 5 a solution of 5a − 9 = 26

Answers

No.

5a-9=26 add 6 to both sides, 5a=35 Divide by 5, a=7 not 5.

Annie wants to eat an entire donut. However, since she only two-years-old, the mother says she can
only have a third of the donut. If the diameter of the donut is 4 inches, how long is the outside edge of
the piece that Annie gets to eat? Round your answer to the nearest hundredth of an inch.

Answers

Answer:

4.19 inches

Step-by-step explanation:

Your goal is to find the circumference of the donut and then divide that by 3 to get 1/3 of the outer edge of the donut.

Circumference is 2[tex]\pi[/tex]r

The diameter (double the radius) is 4, so radius (r) is 2

2 * pi * 2 = 4 pi = 12.57 (round to hundredth)

12.57/3 = 4.19

keep in mind that dividing by 3 is the same as multiplying by 1/3

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