Solve the equation using the quadratic formula. X^2-9x+3=0

Answers

Answer 1

Answer:

The answer is x= [tex]\frac{9+\sqrt{69}}{2}[/tex], x= [tex]\frac{9-\sqrt{69}}{2}[/tex]

Step-by-step explanation:

x^2=a

-9x=b

3=c

Plug into formula.

Equation: [tex]\frac{9+-\sqrt{(-9)^2-4(1)(3)}}{2}[/tex]

Simplify the equation.

Equation: [tex]\frac{9+-\sqrt{81-12}}{2}[/tex]

Subtract 81 and 12.

Equation: [tex]\frac{9+-\sqrt{69}}{2}[/tex]

Spit into two equations

Equation 1: [tex]\frac{9+\sqrt{69}}{2}[/tex]

Equation 2: [tex]\frac{9-\sqrt{69}}{2}[/tex]

Hope this helps!


Related Questions

Steve, a restaurant owner, pays $2.75 per
pound for organic lettuce. He also pays
$50 for the lettuce to be delivered to his
restaurant. About how many pounds of
lettuce can Steve purchase &nd have
delivered for $220?

Answers

Answer: About 62 pounds of organic lettuce

2.75x+50=220

Solve for x

x=61.81(repeating)

Describe a sequence of transformation that maps triangle DOG onto triangle CAT

Answers

The transformation of the function is given by reflection along y axis and a translation of 5 units up

What is Reflection?

Reflection is a type of transformation that flips a shape along a line of reflection, also known as a mirror line, such that each point is at the same distance from the mirror line as its mirrored point. The line of reflection is the line that a figure is reflected over. If a point is on the line of reflection then the image is the same as the pre-image. Images are always congruent to pre-images.

The reflection of point (x, y) across the x-axis is (x, -y). When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the y-axis is (-x, y).

Given data ,

Let the transformation be represented as A

Now , the equation will be

Let the triangle be represented as ΔODG

Now , the coordinates of ΔODG is

O = O ( -1 , -2 )

D = D ( -5 , -3 )

G = G ( -2 , -4 )

Now , the transformed triangle is ΔACT

The coordinates of ΔACT is

A = A ( 1 , 3 )

C = C ( 5 , 2 )

T = T ( 2 , 1 )

Now , on reflecting the triangle ΔODG along y axis , we get

When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is taken to be the additive inverse

So , the coordinates of triangle O'D'G' , we get

O' = O' ( 1 , -2 )

D' = D' ( 5 , -3 )

G = G' ( 2 , -4 )

Now , translating the triangle ΔO'D'G' up by 5 units , we get

The y coordinate of the triangle gets incremented by 5

So ,

A = O' ( 1 , -2 + 5 )

C = C ( 5 , -3 + 5 )

T = T ( 2 , -4 + 5 )

And , the coordinates of the triangle ΔACT is

A = A ( 1 , 3 )

C = C ( 5 , 2 )

T = T ( 2 , 1 )

Hence , the transformation is reflection along y axis and followed by translation of 5 units up

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What is the measure of m?
n
m

28

7
m = [? ] V
Give your answer in simplest form.

Answers

when running a line, in a right-triangle, from the 90° angle perpendicular to its opposite side, we will end up with three similar triangles, one Small, one Medium and a containing Large one.  Check the picture below.

[tex]\cfrac{35}{m}=\cfrac{m}{7}\implies 245=m^2\implies \sqrt{245}=m\implies \sqrt{7^2\cdot 5}=m\implies 7\sqrt{5}=m[/tex]

Mr. Mason paints his fence on Monday, Tuesday, Wednesday, and Thursday. It takes him a total of 6 2/4 hours to paint his fence. Write a digit in each box to show how many hours he could have painted each day.

Answers

Brienfjenndj bfhehfheii hi

What will be the length of the battery?

Answers

Answer:

:) 17

Step-by-step explanation:

68 = 4 x L

68 div by 4 = 17

the length is 17

Answer:

C

Step-by-step explanation:

If the space the battery will be in is 4 centimeters wide, then 4 cm is the width of the rectangle. The length is the area divided by the width. Since we know the area is 68, and the width is 4, divide 68 by 4 and you get 17. So C is the correct answer :)

HOW TO DO THIS QUESTION PLEASE ​

Answers

Answer:

b = -10

c = 25

Step-by-step explanation:

Since the only solution to x is 5 that mean answer will look something like this:

(x-5) (x-5) = 0

x(x-5) -5(x-5)

x^2 -5x -5x + 25

x^2 -10x + 25

This is same as x^2 + bx + c = 0

where b is -10 and c is 25

In the Trans-Yukon Rally Race, which is currently underway, they give a four minute window between start times for each team to space the vehicles out on the course. Each team's finish in the race is then determined by their individual time to complete the course. There are five teams that are sponsored by American motor companies. The drivers of the American teams, their current mileage into the race, and their official times at that point of the race are listed in the table below.
Name Mileage Time (hours:minutes:seconds)

Adam 68 5/8 1:49:48

Allen 58 4/5 1:36:00

Nigel 32 3/10 0:51:00

Owen 44 1/10 1:12:00

William 54 3/8 1:27:00



Which sets of drivers are progressing at the same pace?

Owen and William
Adam and William
Nigel and Owen
Allen and Owen
Adam and Allen
Nigel and William

Answers

Answer:

Hi how are you doing today Jasmine

Adam and William

 Allen and Owen

Use the distributive property to simplify the expression
6(8x+5)

Answers

Answer: 48x+30

Step-by-step explanation:

6(8x+5)

Use the distributive property to multiply 6 by 8x+5.

48x+30

Hope it Helps!

A coin is flipped 200 times. The table shows the frequency of each event.


Outcome Frequency
Heads 98
Tails 102

Determine the experimental probability of landing on heads.
102%
98%
50%
49%

Answers

probability of landing on heads - 49 %

Answer:

49%

Step-by-step explanation:

At which points are the equations y = x2 3x 2 and y = 2x 3 approximately equal?

Answers

The quadratic equations are approximately equals at the points (0.618,4.236) and (-1.618 , -0.236)

What in mathematics is a quadratic equation?

A quadratic equation is a second-order polynomial equation in one variable using the formula x = ax2 + bx + c = 0 and a 0.

                    The fundamental theorem of algebra ensures that it has at least one solution because it is a second-order polynomial problem. 

 we have

 y = x² + 3x + 2   .............(a)

 y = 2x + 3    ...................(b)

To solve the system of equations equate equation A to equation B

  x² + 3x + 2 = 2x + 3

 Group terms that contain the same variable

   x² + 3x + 2 - 2x - 3 = 0

  x² + x - 1 = 0

The formula to solve a quadratic equation of the form ax² + bx+ c  is equal to

     in this problem we have

       x² + x - 1 =0

 so,   a= 1

        b = 1

        c = -1

substitute in the formula

  x = -1 ± √1² - 4(1)(-1)/2(1)

  x = -1 ±√5/2

  x = -1+√5/2 = 0.618

   x = -1 - √5/2  =  - 1.618

  Find the values of y

 for  x = 0.618

    y = 2(0.618) + 3 = 4.236

  for  x = - 1.618

   y = 2(-1.618) + 3  = -0.236

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The complete question is -

At which points are the equations y = x2 + 3x + 2 and y = 2x + 3 approximately equal?

What is the solution to the pair of simultaneous equations 2x y 5 3x 2y 4?

Answers

The solution to the pair of simultaneous equations 2x + y = 5 and 3x - 2y = 4 is (2, 1).

A system of linear equations is a set of two or more equations which includes common variables. The solution to a system of equations, is the value of the unknown variables used in the equations that satisfies both equations.

Given two linear equations in x and y,

2x + y = 5     (equation 1)

3x - 2y = 4     (equation 2)

Use substitution method to find its solution. Express the first equation as y in terms of x and substitute the value of y to the second equation.

2x + y = 5     (equation 1)

y = 5 - 2x

3x - 2y = 4     (equation 2)

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

3x - 10 + 4x = 4

Combining all terms containing the variable x on one side and the constants on the other side of the equality, and solve for x.

3x - 10 + 4x = 4

7x = 14

x = 2

Substitute the value of x in the first equation and solve for y.

y = 5 - 2x

y = 5 - 2(2)

y = 5 - 4

y = 1

Hence, the solution of the given system of equations is (2, 1).

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PLEASE HELPppppp will give brainly

Answers

Answer:

[tex]\boxed{D) ~(-6,-12)}[/tex]

Step-by-step explanation:

[tex]\boxed{Rule}:-[/tex]

[tex](x,y)[/tex] → [tex](3x,3y)[/tex]

[tex]p(-2,-4)[/tex] → [tex](3x-2,-4*3)[/tex]

[tex]\boxed{Answer: (-6,-12)}[/tex]

[tex]-------------[/tex]

hope it helps...

have a great day!!

Answer:

(-6, -12)

Step-by-step explanation:

In dilations, the scale factor is how many times larger the figure will be.

In other words, multiply the x and y-coordinates by the scale factor. In this case, the scale factor is 3.

(-2, -4) are the original coordinates.

-2 × 3 = -6

-4 × 3 = -12

Therefore, the new coordinates are (-6 -12).

Solve the system of equations using subtraction.
3x – 3y = -6
3x + y=10

Answers

Answer:

(2,4)

Step-by-step explanation:

x=2

y=4

Select ALL the equations where a = 5 is a solution.

Group of answer choices

a + 10 = 14

4 = 20 ÷ a

13 + a = 18

36 = 5a

a - 5 = 0

Answers

The answer is ,2, 3,5

Find the measure of the missing angles.

Answers

Answer:

60 kkkkkkkkkkkkkkkkkkkkkk

Answer:

a = 60

Step-by-step explanation:

First off this is a straight angle so it will add up to 180 degrees we already have 30 and the other angle between a and 30 is a 90 degree angle so now we just have to subtract those from 180 to get the answer! so... 90 + 30 = 120 180 - 120 = 60

So 60 is the answer hope that helps!


[tex]4x ^{2} \: 6xy \: 8y ^{2} [/tex]

Answers

Answer:

[tex]192x ^{3} y ^{3} [/tex]

When Juan commutes to work, the amount of time it takes him to arrive is normally distributed with a mean of 31 minutes and a standard deviation of 4.5 minutes. Using the empirical rule, what percentage of his commutes will be between 22 and 40 minutes?

Answers

Answer: 95%

Step-by-step explanation:

i kinda slayed

Using the empirical rule, for normal distribution is 68 % of his commutes will be between 23.5 and 32.5 minutes

What is normal distribution?

The normal distribution is a probability distribution used to calculate probability for continuous variables.

Here, we have,

to find what percentage of his commutes will be between 23.5 and 32.5 minutes using the empirical rule:

Now, since gabriel commutes to work, the amount of time it takes him to arrive is normally distributed with a mean of 28 minutes and a standard deviation of 4.5 minutes, we need to find the percentage of his commutes will be between 23.5 and 32.5 minutes using the empirical rule.

First, we need to find how many standard deviations away from the mean each value is using the z-score

Z = (x - μ)/σ where

x = value,

μ = mean and

σ = standard devation

For x = 23.5, we have

Z = (x - μ)/σ

Z = (23.5 - 28)/4.5

Z = -4.5/4.5

Z = -1

Z = -1σ

Also, for x = 32.5, we have

Z = (x - μ)/σ

Z = (32.5 - 28)/4.5

Z = 4.5/4.5

Z = 1

Z = 1σ

So, we have that -1σ ≤ (x - μ) ≤ 1σ

So, the values between 23.5 and 32.5 minutes lie within one standard deviation.

Using the empirical rule, this is 68 % of the values.

So, 68 % of his commutes will be between 23.5 and 32.5 minutes

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complete question:

when gabriel commutes to work, the amount of time it takes him to arrive is normally distributed with a mean of 28 minutes and a standard deviation of 4.5 minutes. using the empirical rule, what percentage of his commutes will be between 23.5 and 32.5 minutes?

The light blue askes for the word form, the green says g= -1, the yellow askes for possible solutions, the purple wants how you shade the number line.
Please help!!!!!!!!!!!!!!!!!!!!!

Answers

Answer: get yio colors straightv

Step-by-step explanation:

Which statement correctly describes this picture?

Answers

Answer is option D.

Because there, TY is show as a ray with one end point only. And PR is a lone segment.

Selena has 9 homemade bracelets for $12 each then 14 bracelets for $8 each. How much did she make in sales?

(Use the correct operation or combination of operations to solve the problem)

Answers

She will make a total profit of $220. Profits are amounts of money paid to a person with the right of immediate occupation for using the land when no permission has been granted for that use.

What are the different types of profit?

Profit is the term used to describe the monetary gain experienced when the revenue from a commercial activity outpaces the costs, costs, and taxes incurred to support the activity in question. There are three primary ways to measure profit. These include operating profit, net profit, and gross profit. Gross profit and operating profit are indicators of how efficiently your company uses its resources to produce its goods and run day-to-day operations.

number of bracelets sold for $12 each=9

number of bracelets sold for $8 each=14

Total profit=9x12+8*14=$220

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A can of carrots weighs 15/16 of a pound. One serving of carrots is ¼ of a pound. How many servings are in the can of carrots?

Answers

Answer:

Step-by-step explanation:

How many carrots are in a can?  is that the question ?  :DDDDD

15/16   and  1/4 = 4/16 sooo

4*3 = 12

so three full servings  and one that is  3/4 full  

so 3

PLEASE HELPP

If A and B are supplementary angles and
m/B = 54, find m/A.

Answers

Answer:

m∠A=126°

Step-by-step explanation:

Supplementary means that they add up to 180°.

Therefore we can do 180-54 to get 126° for the m∠A.

Hope this helped! :)

Type the correct answer in each box. Use numerals instead of words. Find the missing side and angle measures in triangle ABC. Round your answers to the nearest tenth. Scalene triangle ABC with side AC labeled 23 and side BC labeled 15. Angle A measures 40 degrees. The measure of angle B is approximately . The measure of angle C is approximately . The length of side AB is approximately

Answers

The measures of the angles of the triangles are

The measure of ∠B = 80.3°

The measure of ∠C = 59.7°

The length of side AB = 20.2 units

What is a Triangle?

A triangle is a plane figure or polygon with three sides and three angles.

A Triangle has three vertices and the sum of the interior angles add up to 180°

Let the Triangle be ΔABC , such that

∠A + ∠B + ∠C = 180°

The area of the triangle = ( 1/2 ) x Length x Base

For a right angle triangle

From the Pythagoras Theorem , The hypotenuse² = base² + height²

if a² + b² = c² , it is a right triangle

if a² + b² < c² , it is an obtuse triangle

if a² + b² > c² , it is an acute triangle

Given data ,

Let the triangle be represented as ΔABC

Now , the measure of side AC = 23

The measure of side BC = 15

The measure of ∠A = 40°

From the law of sines , we get

( sin A ) / a = ( sin B ) / b = ( sin C ) / c

Substitute the value of A and a in the equation , we get

sin ( 40 )° / 15 = sin B / 23

On simplifying the equation , we get

sin B = ( 23/15 ) x sin ( 40 )°

Now , m∠B = 80.27°

So , the measure of angle ∠B = 80.3°

And ,

The interior angles of a triangle is 180°

So , The measure of angle ∠C = 180° - ( 80.3° + 40° )

On simplifying the equation , we get

The measure of angle ∠C = 59.7°

Now ,

From the law of cosines , c² = a² + b² - 2ab ( cos C )

Substitute the value of a , b and cos C in the equation , we get

c² = 15² + 23² - 2 ( 15 ) ( 23 ) cos ( 59.7 )°

On simplifying the equation , we get

c² = 225 + 529 - 348.12363

c² = 405.87

Taking square roots on both sides of the equation , we get

c = 20.156

c = 20.2 units

Therefore, the measure of side AB = 20.2 units

Hence , the measures angles of triangle is solved

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Find the volume of each solid. Round to the nearest tenth if necessary. Use 3.14 for or
22/7
A : 14.7 m3
B : 3.7 m3
C : 4.7 m
D : 6.7 m3

Answers

Answer:

1.1^2 = 1.21

1.21 x 3.14 = 3.7994

3.7994 x 2.9 = 11.01826

11.01826 divided by 3 = 3.67275333333 rounded = 3.7 m3

State who is correct
And
Describe the mistake the other student made

Answers

Answer:

Sebastian is correct

Step-by-step explanation:

George is wromy because where he had to simplify:

+ 5 - 8 ( which is the same as - 8 + 5 ), he added the two numbers (5 and 8) which is not supposed to be so. He should have rather subtracted the 8 from the five which will be + 5 - 8 = 3. This then makes Sebastian correct as he subtracted the two numbers.

A car on a Ferris wheel with a radius of 20 feet. To the nearest foot, how far does the car travel over an angle of pi/3 radians? (Include the unit of measure in your response.)

Answers

Answer:21

Step-by-step explanation:

The car on a Ferris wheel with a radius of 20 feet. travels a distance of 125.6 feet

In order to determine the distance that the car has travelled, we will use the formula for calculating the circumference of a circle expressed as:

C = 2πr

r is the radius of the fairy wheel

Given the following parameters

radius = 20 feet

Substitute into the formula of the circumference:

[tex]C = 2(3.14)(20)\\C = 40(3.14)\\C = 125.6 feet[/tex]

This shows that the car on a Ferris wheel with a radius of 20 feet. travels a distance of 125.6 feet

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1.) what is the length of the apothem in this regular pentagon?

2.) What is the area of the regular pentagon?

3.)What is the length of the apothem in this regular pentagon ?

Answers

On solving the provided question, we can say that - the each angle of pentagon is x = 108

what is a pentagon?

A pentagon is a polygon with five sides that is used in geometry. The inner angles of a straightforward pentagon add up to 540°. Simple or self-intersecting pentagons are both possible. A pentagram is a self-intersecting regular pentagon. Five angles and all sides of a regular pentagon are equal. It is referred to as an irregular pentagon if the side lengths and angle measurements do not match. All outside angles, as far as we are aware, balance out inside angles. The polygon's exterior angle total is therefore equal to n(360°/n). There are five sides to a pentagon, therefore n must equal five. Consequently, 5(360°/5) = 360° is the sum of the pentagon's outer angles.

since all sum of pentagon is 540

so, 5x = 540

x = 108

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Which equation is the inverse of 2(x-2)² = 8(7+ y)?
O-2(x-2)² = -8(7+ y)
Oy-1x²-x-8
O y=-2± √28+4%
Oy=2+√√28+4x

Answers

as you already know, to get the inverse of any expression we start off by doing a quick switcheroo on the variables and then solving for "y", let's do so.

[tex]2(x-2)^2=8(7+y)\hspace{5em}\stackrel{\textit{quick switcheroo}}{2(y-2)^2=8(7+x)} \\\\\\ (y-2)^2=\cfrac{8(7+x)}{2}\implies (y-2)^2=4(7+x)\implies (y-2)^2=28+4x \\\\\\ y-2=\pm\sqrt{28+4x}\implies \boxed{y=2\pm\sqrt{28+4x}}\qquad \impliedby f^{-1}(x)[/tex]

A ship is stationary at sea.
A tugboat is 28 km away at a bearing of 210°, and a yacht is 24 km from the tugboat at a bearing of 310°.
Draw a scale diagram showing the positions of the three vessels.
Use a scale of 1 cm : 4 km.
Use your diagram to find the distance of the yacht from the ship to the nearest km. I’ll give brainliest i just need help please :).

Answers

Answer:

The distance between the yacht from the ship is about 33.6 km.

Step-by-step explanation:

The diagram is attached below.

Point A is the shipe, Point B is the tugboat, and Point C is the yacht.

Since the tugboat is 28 km away, and the scale being used is 1 cm : 4 km, the tugboat is 7 cm away from the ship at a 210° bearing on the diagram.

Likewise, the yacht is 6 cm away from the tugboat at a 210° bearing.

To find the distance between the yacht to the ship, we need to determine the value of x.

To do so, we can use the Law of Cosines:

[tex]b^2=a^2+c^2-2ac\cos(B)[/tex]

First, we need to determine ∠B.

A has a bearing of 210°. 180° is covered by QI and IV. So, the small angle in QIII is 30°.

By Alternate Interior Angles, the angle in QI (inside the triangle) of Point B must also be 30°.

And since Point B has a bearing of 310°, 270° is covered in total by QI, QIV, and QIII. So, 40° is left in QII.

Therefore, 50° is the measure of the angle in QIII within the triangle of Point B.

Thus, ∠B measures 50° + 30° = 80°.

So, ∠B measures 80°. We also know that a = 6 and c = 7. Substitute:

[tex]b^2=(6)^2+(7)^2-2(6)(7)\cos(80)[/tex]

Simplify and take the square root of both sides. So:

[tex]b=\sqrt{85-84\cos(80)}[/tex]

Approximate using a calculator:

[tex]b=8.3912...\approx 8.39\text{ cm}[/tex]

Since 1 cm : 4km, to find the distance in km, we simply need to multiply by four. So:

[tex]\Rightarrow b=4(8.3912...)=33.5651\approx 33.6\text{ km}[/tex]

The distance between the yacht from the ship is about 33.6 km.

Need help with this dilation tyyy

Answers

Answer:

Scale Factor: 2

Step-by-step explanation:

Need more information?

Visit MathWareHouse.com

Hope this was helpful! Thank you & have an awesome day! =)

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