The graph of the equation y=x²-2x-8 is a parabola. What is the equation of the axis of symmetry?

Answers

Answer 1

Answer:

x=1

Step-by-step explanation:

y=x²-2x-8

First, we solve for the vertex

The equation for the vertex is -b/2a

Substitution:

-b/2a

=-(-2)/(2*1)

=2/2

=1

Therefore the equation for the line of symmetry is x=1

Hope this helps!


Related Questions

1. Design your own real-world scenario in which the solution requires the Pythagorean Theorem. Use complete sentences to describe the scenario.
2. Model your real-world scenario with an equation and a sketch.
3. In two or more complete sentences, explain the steps necessary to solve for the missing value in your real-world scenario. Include the solution in your explanation.

Answers

Answer:

this is not maths

is the answer

if you like my answer please like comment and mark me as brilliant

To rent a car, company A charges $55 per day and 33 cents per mile. Company B charges no daily fee, but 55 cents per mile. How many miles must you drive for Company B to cost the same as company A?

please show your work
and give the answer

Answers

Answer:

about 101 miles to equal the same amount as place A. (if this is daily")

Step-by-step explanation:

so how I went about this is first I added 55+0.33 because thats how much you need to drive one mile for one day with place A. and that equaled 50.30 so then I divided 50.30 by 0.55 because thats all it costs per mile for place B so I got 100.545454545 so i just rounded it up to 101

i hope im right plmn;)

Answer:

no they are not the same tax or rate because 33 cents off is company B

Step-by-step explanation:

88 cents for company A and 55 cents for company B

and company A charged a fee of 33 cents but company B did not

CAN SO,EOME HELP ME.

Answers

According to the calculator the square root of 11 is 3.31662479036 which when rounded up sums up to 3 implying that the square root of 11 is closer to three than 4.
I don’t see anything it’s blank for me?

What is the division expression that is the same as 1/5 * 1/4 ?
A. 1/5 divide by 2
B. 1/5 divide by 3
C. 1/5 divide by 4
D. 1/5 divide by 5

Answers

Answer:

C. 1/5 divide by 4

Step-by-step explanation:

When you divide two fractions, you multiply the first fraction by the reciprocal of the other one. To find the reciprocal of the second fraction, yo just have to switch the value of the numerator and denominator (i.e. 4/1's reciprocal is 1/4).

Another important thing to note is that 1/5 x 1/4 is 1/20 because you multiply straight across numerators and denominators.

Now that we have some back ground information, let's which expression leads to 1/20!

A:

1/5 x 2/11/5 x 1/21/10Incorrect Answer Choice

B:

1/5 x 3/11/5 x 1/31/15Incorrect Answer Choice

C:

1/5 x 4/11/5 x 1/41/20Correct Answer Choice!

Therefore, the answer is C. 1/5 divide by 4.

garret wants to find out which restaurant people think serves the best brisket in town. what is the population from which garret should find a sample? what might be a sample that is not representative of the population?

Answers

Answer:

He should find the sample from people who eat brisket from multiple different resturaunts. A sample that would not be representative could be a vegetarian.

Step-by-step explanation:

If they eat brisket they'll know what the best brisket is.

A vegetarian deoesn't eat meat so wouldn't know.

Can someone help pls.

Answers

My goodness, this is rather confusing in the way it is worded. Nevertheless, I will attempt to do what I can. Just please keep in mind that this is my own interpretation of the problem, and therefore could be... incorrect.

I think, to start out, we could set up the problem like so

15 + t ≥ 26

because t is not a set number.

Then all that is needed is to subtract 15 from both sides, and the equation becomes

t ≥ 11

So the resulting answer is t ≥ 11.

I hope that my interpretation helps.

-Toremi

Answer:

Step-by-step explanation:

WILL CHOOSE BRAINLIEST!!!

Answers

A: all the other ones are true

The dot plot shows the number of magazines bought in a month by 21 people in a office: (check attachment) Is the median or the mean a better center for this data and why?

A) Median; because the data is not normally distributed and clusters on the left
B) Mean; because the data is not normally distributed and clusters on the left
C) Median; because the data is symmetric with an outlier
D) Mean; because the data is symmetric with an outlier

Answers

Answer:

A is the answer

Step-by-step explanation:

Have a nice day friend.!::::))))

Triangle PRQ was transformed to create triangle P'R'Q'. if point P started at coordinates (6,-54), and became point P' at coordinates (-6,-54), describe the transformation that was applied to triangle PRQ.

Answers

PRQ was translated 90 degrees clockwise.

If (6,-54) is located in q4 (+,-) and rotated to land on (-6,-54) which is in q3 then it was rotated 90 degrees clockwise.

Answer:

PRQ was translated 90 degrees clockwise.

If (6,-54) is located in q4 (+,-) and rotated to land on (-6,-54) which is in q3 then it was rotated 90 degrees clockwise.

Step-by-step explanation:

Write the equation for each translation of the graph y=Ix+2I.
A.) one unit up
B.) one unit down
C.) one unit to the left
D.) one unit to the right

Answers

Answer:

d

Step-by-step explanation:

because it tells you how to do it in the equation.

y=1+|x+2| is A, B is y=|x+2|-1, C is y=|x+3| and D is y=|x+1|

Find the value of n.

Answers

I think it’s 45 because it’s look like
The value of n is 45 I just did it! Trust me

12 decimeters = dm deka will get brainiest if right

Answers

Answer:

0.12

Step-by-step explanation:

Decimeter is 100 times greater than dekameter

     

Type your number answer in decimal form.

0.4 liters = ___ milliliters

Answers

0.4 liters is 400 milliliters

Answer:

0.4 liters=400.0 milliliters

Step-by-step explanation:

50 POINTS GIVING BRAINLIEST

Answers

Answer:

x = 37°

x = 40°

x = 260°

Step-by-step explanation:

To find angle x when two secants or tangents intersect outside the circle, simply subtract the smaller arc from the bigger arc and half the result.

Question 1

[tex]x=\dfrac12(128^{\circ}-54^{\circ})=37^{\circ}[/tex]

Question 2

To find the bigger arc, subtract the smaller arc from 360°

⇒ 360° - 140° = 220°

[tex]x=\dfrac12(220^{\circ}-140^{\circ})=40^{\circ}[/tex]

Question 3

The smaller arc can also be found by subtracting the external angle from 180°

Smaller arc = 180° - 80° = 100°

[tex]80^{\circ}=\dfrac12(x-100^{\circ})[/tex]

[tex]160^{\circ}=x-100^{\circ}[/tex]

[tex]x=260^{\circ}[/tex]

#1

2x=128-542x=74x=37°

#2

Bigger Arc=360-140=220°

2x=(220-140)2x=80x=40°

#3

Smaller arc=180-80=100°

2(80)=x-100160=x-100x=260°

I need help on this since we don’t got a teacher we never learned about this

Answers

Answer:

1. +5

2. -40

3. +8

4. +20

5. -15

6. +22

7. -9

8. +125

9. -35

10. 0

1. 7

2. 15

3. 0

4. -5

5. -3

6. 3

7. 17

8. 5

9. -101

10. 0

11. 16

12. 1

Step-by-step explanation:

Absolute value bars ask for the distance of a number and 0 so |-8| is equal to 8 since it is 8 units away from zero, |7| would be equal to 7 since it is 7 units away from 0. To do the more complicated problems simplify the equation as much as possible and then solve.

please help asap. please.

Answers





For the table

10 —> 4
1 —> 0.4
20 —> 8
40 —> 16
39 —> 15.6
10% of 40 is is 4, because you would use the equation 10/100 = x/40. You would cross multiply and get 4/40 = 10/100.

1% of 40 is the equation 1/100 = x/40, so 0.40 is the value of x.

Hope this helps, you should be able to solve the rest by cross multiplying.

Please answer both if possible

Answers

Answer:

2. Surface Area = 576m^2

3. Surface Area = 300 yd^2

Step-by-step explanation:

2.

Surface Area of Prism Formula:

Triangle Formula: Area = 1/2 * Base * Height

Left Triangle: Area = 1/2 * 8m * 6m = 1/2 * 48 = 24 m^2

Right Triangle:  Area = 24m^2

Rectangle Formula: Area = Length * Width

Top Rectangle: Area = 22m * 6m = 132m^2

Middle Rectangle: Area = 22m * 8m = 176m^2

Bottom Rectangle: Area = 22m * 10m = 220m^2

Add Total Surface Area:

Surface Area = LTrig + RTrig + TopRect + MidRect + BotRect

Surface Area = 24  + 24 + 132 + 176 + 220

Surface Area = 576 m^2

3.

Surface Area of Prism Formula:

Triangle Formula: Area = 1/2 * Base * Height

Left Triangle: Area = 1/2 * 9yd * 4yd = 1/2 * 36 = 18 yd^2

Right Triangle:  Area = 18 ydm^2

Rectangle Formula: Area = Length * Width

Top Rectangle: Area = 12yd * 8yd = 96yd^2

Middle Rectangle: Area = 12yd * 5yd = 60yd^2

Bottom Rectangle: Area = 12yd * 9yd = 108yd^2

Add Total Surface Area:

Surface Area = LTrig + RTrig + TopRect + MidRect + BotRect

Surface Area = 18 + 18 + 96 + 60 + 108

Surface Area = 300 yd^2

I am not sure if there is a short cut.

576m^2
300yd^2
Hope this helps

PLS HELP
Which statement about the data points in the second and third quartiles is true?


A: There are more data points in Q2 than Q3.

B: There are fewer data points in Q2 than Q3.

C: The data points in Q2 are more spread out than the data points in Q3.

D: The data points in Q2 are bunched together more than the data points in Q3.

Answers

Answer

C

Step-by-step explanation:

This shows that the interquartile range for Q2 is larger than Q3 so i think the answer is c

Answer:
The answer is c

Anyone know of a calculator that can do everything?

Answers

Answer: The Casio FX-9750GII Graphic Calculator features all the basic functionality of an entry-level graphing calculator, making it great for math coursework from Pre-Algebra to AP Calculus and Statistics and courses in between (like Geometry and Trigonometry).

Step-by-step explanation: pls friend can i get branliest and thanks

For what value of k will the following linear system have infinitely many solutions?

2a+b=-6, 6a+kb=-18

Answers

There are infinitely many solutions to a linear equation with the same variable term on both sides of the equation.

We have to find the coefficient of "b"

from first equation:

2a + b = -6b = -6 - 2a

from second equation:

6a + kb = -18b = (-18 - 6a)/k

solve them simultaneously:

(-18 - 6a)/k = -6 - 2a(-18 - 6a)/(-6 - 2a) = kk = 3

Whoever gets it right can have brainliest, but answer ASAP!

Answers

Answer:

3

Step-by-step explanation:

5*5=25 + 3-1=2  25+2=27

18/9=2

27/9 27/3=9  9/3=3

9/3 9/3=3  3/3=1

3/1=3

this is khan academy and i need help

Answers

Answer: -4.2c + 4.8d
Explanation: you multiply 0.6 by -7c, which results in -4.2c. Then you multiply 0.6 by 8d, which results in 4.8d
-4.2c+4.8d

you have to multiple each term by 0.6

-7c•0.6 = -4.2c

8d•0.6= 4.8d

giving you the expression -4.2c+4.8d

Help me please and thank you

Answers

Answer:

Range = 7

Mean = 7.75

Assumption: Most students will have 7 or 10 letters in their last name

Step-by-step explanation:

Range = Largest - Smallest

           = 10 - 3

           = 7

Mean = Add the total numbers up to get a total / numbers in the series

          = (3+5+2(6)+2(9)+5(7)+4(8)+5(10)) / (1+1+2+5+4+2+5)

          = 7.75

The correct answer to this question is 7.75

WHO ANSWER'S THE FIRST WITH THE CORRECT ANSWER WILL GET FREE BRAINLIST!!!
Michiko claims that to solve the system of linear equations 15x + 8y = 1 and 21x + 4y = -13, instead of multiplying the second equation by –2 and then adding the equations, she could multiply the second equation by 2 and then subtract the second equation from the first equation. Which statement is correct?

A: Michiko is right for this system of linear equations, but her method will not work for other systems of linear equations.

B: Michiko is right for this system of linear equations, and her method will also work for other systems of linear equations.

C: Michiko is wrong because her method will give the opposite of the correct value for x for any system of linear equations.

D: Michiko is wrong because her method will give the opposite of the correct value for y for any system of linear equations.

Answers

Answer: B) Michiko is right for this system of linear equations, and her method will also work for other systems of linear equations

Hope this helped

Michiko is right for this system of linear equations, but her method will not work for other systems of linear equations, option A is correct.

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

To solve the system of linear equations 15x + 8y = 1 and 21x + 4y = -13, Michiko suggests multiplying the second equation by 2 and then subtracting the second equation from the first equation.

Multiplying the second equation by 2 gives:

42x + 8y = -26

Now, subtracting the second equation from the first equation gives:

15x + 8y - (42x + 8y) = 1 - (-26)

Simplifying this equation gives:

-27x = 27

Divide both sides by 27

x=-1

we can substitute x = -1 into either of the original equations.

Using the first equation, we get:

15(-1) + 8y = 1

Simplifying this equation gives:

8y = 16

Dividing both sides by 8 gives:

y = 2

Hence, Michiko is right for this system of linear equations, but her method will not work for other systems of linear equations, option A is correct.

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ7

So, ima be sending out a bunch of questions due to me wanting to keep a good grade in math so....cash in ..(Please help me with some math problems)

Answers

Answer:

questions 2 and 3 are correct number 7 is 40

Step-by-step explanation:

math problem below answer please

Answers

Answer:

No, because the shape or figure is not overlapping.

Step-by-step explanation:

A tessellation of the plane is an arrangement of polygons which cover the plane without gaps or overlapping.

No because the equation is not overlapping

Brainliest for who can answer first!! (only the first one)
Solve the equation: √x = 3 - (1 / 4)x

Answers

Answer:

Let u = √x which gives u2= x and rewrite the given equation in terms of u

u = 3 - u 2 / 4

Multiply all terms by 4, simplify and write the above quadratic in standard form and solve it for u.

u 2 + 4 u - 12 = 0

Two solutions: u = - 6 and u = 2

Use the substitution used above u = √x to solve for x.

u = - 6 = √x has no solution

u = 2 = √x has solution x = 4

Below is shown the graph of the right side of the given equation when written with its right side equal to zero. The x intercept of the graph is the graphical solution to the equation as shown below.

Step-by-step explanation:

Answer: x = 4

Step-by-step explanation:

    Given:

√x = 3 - (1 / 4)x

    Rewrite:

[tex]\displaystyle \sqrt{x} = 3 - \frac{1}{4}x[/tex]

    Square both sides:

[tex]\displaystyle (\sqrt{x} )^{2} = (3 - \frac{1}{4} x)^{2}[/tex]

[tex]\displaystyle x= \frac{1}{16}x^{2} -\frac{3}{2} +9[/tex]

    Set the equation equal to 0:

[tex]\displaystyle \frac{-1}{16}x^{2} +\frac{5}{2} -9=0[/tex]

    Use the quadratic formula:

[tex]\displaystyle x=\frac{-b\sqrt{b^{2} -4ac} }{2a}[/tex]

[tex]\displaystyle x=\frac{-(\frac{5}{2})\sqrt{(\frac{5}{2})^{2} -4(\frac{-1}{16} )(-9)} }{2(\frac{-1}{16} )}[/tex]

x = 4, 36

    Plugging back into equation shows us only one answer works,

x = 4

Please find the rest of the answers, 1 was already done for you. IMAGE ATTACHED

Answers

Answer:

D

Step-by-step explanation:

I think if wrong im sorrrry

Answer:

the answer i got is d

Step-by-step explanation:

A hoodie was $40 but is marked up 35%. What is the selling price?

Answers

I think the selling price is 54

Answer: The selling price is $54 and the 35% markup is equal to 14 dollars.

Lilia uses craft stickers to make stars for an art project. She uses 5 craft stickers for each star, and she has 19 craft sticks. Lilia makes as many stars as she can. How many stars does she make?

Answers

Answer:

The maximum Number of stars she could make is the whole number value (discarding the remainder) = 3

Step-by-step explanation:

if this helps mark brainllest

Answer:

3

Step-by-step explanation:

19 = 5 + 5 + 5 + 4

1 sticker, 5 stars

3 stickers, 15 stars.

thanks I hope this is helpful

mark me as a brainlest you get 3 points!

Other Questions
on the number line,label the points that are 5 over 2 units away from 0. What is the distance between these points Could someone help me 2x + y = 7 - 9x + 6y = 0 Preble Company manufactures one product. Its variable manufacturing overhead is applied to production based on direct labor-hours and its standard cost card per unit is as follows: Direct materials: 4 pounds at $8 per pound$ 32 Direct labor: 2 hours at $16 per hour32 Variable overhead: 2 hours at $6 per hour12 Total standard cost per unit$ 76 The planning budget for March was based on producing and selling 32,000 units. However, during March the company actually produced and sold 37,000 units and incurred the following costs: Purchased 160,000 pounds of raw materials at a cost of $7.40 per pound. All of this material was used in production. Direct laborers worked 67,000 hours at a rate of $17 per hour. Total variable manufacturing overhead for the month was $422,100. rev: 11_20_2017_QC_CS-109672 6. If Preble had purchased 182,000 pounds of materials at $7.40 per pound and used 160,000 pounds in production, what would be the materials quantity variance for March If Shannon wants to fill a spherical balloon so that it has a circumference of 8 in, how much air will she need to use to fill the balloon? Sage borrowed $4500 from her parents to buy her a new car. So far she has repaid $2740 How much money does save still owe her parents? You can buy 1 pound of chocolate for 7.99 how much is a chocolate pronounce round your answer to the nearest cent Use this equation: N2 + 3H2 2NH3, for the following problems: 1. If 2.5 moles of N2 react, how many grams of NH3 can be produced? 2. If 10.0 moles of NH3 are produced, how many grams of H2 would be required? Use this equation: B2O3 + 3Mg 3MgO + 2B, for the following problems: 3. How many grams of boron can be obtained from 8 moles of B2O3? 4. How many grams of magnesium are required to produce 4 moles of boron? Use this equation: S8 + 12O2 8SO3, for the following problems: 5. How many grams of oxygen is needed to produce 7.5 moles of sulfur trioxide? 6. How many grams of sulfur trioxide can be produced from 2 moles of octasulfur? Crushing of stones is a surgicalprocedure called Once a social problem moves through the four stages it is largely solved.A. TrueB. False BRAINLIEST?! :DYou look up at a 70angle and see a plane directly above a building that is 30 meters away from you. How high is the plane flying? Round your answer to the nearest tenth. Why does carson think that the process of spraying for insects will never end? insects keep laying eggs every day. new insects keep arriving from other environments. insects develop resistance to sprays, so stronger sprays must be created. resources a city government might allocatelist things below1.234 make an emergency plan for an ice storm Passing is set in the 1920s, before the supreme court declared "separate but equal" facilities for nonwhites unconstitutional. what privileges is irene redfield denied as a black person? what do men and women gain by passing? with examples from the text please 8. Explain how each of the following is an example of verbal, situational, or dramatic irony:a. Mary's gift of a poppet to Elizabeth -b. The one Commandment out of ten that John Proctor can't remember -C. Proctor's statement about Abigail at the end of the act, "Good. Then her saintliness is done with." Which characteristic do all owl families share? A.) small eyes B.) large body size C.) nighttime hunting D.) heart-shaped faces Need this answer in 5 MINUTES!If any turtors are out there I need a Verified answer Which statement was made by the negative to indicate a bias in the survey data presented by the affirmative?The survey did not ask for the students' opinions regarding their freedom of expression.The survey was conducted by a uniform manufacturer that profits from schools requiring school uniforms.The survey was performed in elementary schools, not in high school environments.The survey only asked female school officials for their opinions, not male school officials.answer B 2. Which features are associated with divergent boundaries?a. folded mountains at ocean trenchesb. mountain chains at ocean ridgesc. non-boundary mountainsd. volcanic island arcs please i relly need help on this