What is the vertex form of y=-2x^2-8x+10? Give the coordinates of the vertex, state if there is a minimum or maximum, and find the equation of the line of symmetry.

This is for Algebra 2 regular.

Answers

Answer 1
first off, let's notice that the squared variable is the "x", that means is a vertically opening parabola.

notice the leading term's coefficient, is -2, is negative, that means the parabola is opening downwards, is facing down, so it goes up up up, reaches the U-turn and then down down down, is a "hump" or a maximum point.

[tex]\bf \textit{vertex of a vertical parabola, using coefficients} \\\\ \begin{array}{lcccl} y = & -2x^2& -8x& +10\\ &\uparrow &\uparrow &\uparrow \\ &a&b&c \end{array} \qquad \left(-\cfrac{ b}{2 a}\quad ,\quad c-\cfrac{ b^2}{4 a}\right) \\\\\\ \left( -\cfrac{-8}{2(-2)}~~,~~10-\cfrac{(-8)^2}{4(-2)} \right)\implies \left( \cfrac{8}{-4}~~,~~10-\cfrac{64}{-8} \right) \\\\\\ \left( -2~~,~~10+8 \right)\implies (-2~~,~~18)[/tex]

and the line of symmetry, well is a vertical parabola, mirroring itself at the line x = -2, which is the x-coordinate of the vertex.

Related Questions

What is the sum of the geometric series

Answers

Answer: 2343 / 256

Explanation

I will do this for you in two forms: 1) adding each term, and 2) using the general formula for the sum of geometric series.

1) Adding the terms:

 4
∑ 3 (3/4)^i = 3 (3/4)^0 + 3 (3/4)^1 + 3 (3/4)^2 + 3 (3/4)^3 + 3 (3/4)^4
i=0

= 3 + 9/4 + 27/16 + 81/64 + 243/256 = [256*3 + 27*16 + 64*9 + 4*81 + 243] / 256 =

= 2343 / 256

2) Using the formula:

n-1
∑ A (r^i) = A [1 - r^(n) ] / [ 1 - r]
i=0

Here n - 1 = 4 => n = 5

r = 3/4

A = 3

Therefore the sum is 3 [ 1 - (3/4)^5 ] / [ 1 - (3/4) ] =

= 3 [ 1 - (3^5) / (4^5) ] / [ 1/4 ] = 3 { [ (4^5) - (3^5) ] / (4^5) } / {1/4} =

= (3 * 781) / (4^5) / (1/4) =  3 * 781 / (4^4) = 2343 / 256

So, no doubt, the answer is 2343 / 256

Starting time 2:15 elapsed time 45 minutes

Answers

if it is 2:15 now, after 45 minutes is 3:00

Donna Bakes biscuits on a rectangular cookie sheet that is 30 centimeters by 50 centimeters.Each biscuit had a diameterof 8 centimeters. What is the maximum number of biscuits donna can make on the sheet at once on the cookie sheet.

Answers

Final answer:

Donna can make a maximum of 94 biscuits on the rectangular cookie sheet at once.

Explanation:

To find the maximum number of biscuits Donna can make on the rectangular cookie sheet, we need to calculate the area of the sheet and divide it by the area of each biscuit.

The area of the sheet is given by length x width, so it is 30 cm x 50 cm = 1500 cm².

The area of each biscuit is given by πr², where r is the radius (half the diameter) of the biscuit. In this case, the radius is 8 cm / 2 = 4 cm. So the area of each biscuit is π x 4 cm x 4 cm = 16π cm².

To find the maximum number of biscuits, we divide the area of the sheet by the area of each biscuit:

Maximum number of biscuits = Area of the sheet / Area of each biscuit = 1500 cm² / 16π cm² ≈ 94.25 biscuits.

Since we can't have a fraction of a biscuit, the maximum number of biscuits that Donna can make on the sheet at once is 94 biscuits.

Learn more about maximum number of biscuits here:

https://brainly.com/question/29071825

#SPJ12

A certain animated movie earned $1.1 * 10^9 in revenues at the box office. The movie lasts 9.1*10^1 minutes. How much revenue was earned per minute of the movie?

Answers

Final answer:

To find the revenue per minute of the movie, divide the total revenue ( [tex]\$1.1 \times 10^9[/tex]) by the length of the movie ( [tex]9.1 * 10^1[/tex]). The trick is to divide the numerical portions and the power of ten portions separately. The answer is approximately [tex]\$1.20879 \times 10^7[/tex] per minute.

Explanation:

The subject of this question is mathematics and it involves a concept called division in scientific notation. To find the revenue per minute for this movie, we'll divide the total earnings ($1.1 * 109) by the length of the movie in minutes (9.1 * 101).

Step 1: Place the two values with scientific notation over each other, akin to a typical division problem. This means $1.1 * 109 / 9.1 * 101.

Step 2: Divide the two numerical portions separately from the power of ten portions. This is dividing 1.1 by 9.1 and 109 by 101.

Step 3: The former (from step 2) gives you approximately 0.120879 and the latter simplifies to 108 (because when you divide with the same base, you subtract the exponents).

So the earnings per minute of this movie were approximately $0.120879 * 108, or $1.20879 * 107.


Learn more about division in scientific notation here:

https://brainly.com/question/32834305

#SPJ12

Alvin financed $3,450 to buy a new car. If he made 36 payments of $138.50 each, how much interest did he pay on the loan? a. $153.60 b. $415.50 c. $1,536 d. $4,986

Answers

C. $1,536. 

Multiply 138.50 by 36. (4,986) 
Then, subtract 4,986 by 3,450.

The polygons are similar. Find the value of x

Answers

The value of X is 9!
we can write as a proportion
big side/ small side = big side / small side
16/12 = x-1 / 6
Simplify
4/3 = x-1 / 6
multiply both sides by 6
24/3 = x-1
simplify
8 = x - 1
add 1 to both sides
9 = x

Hope this helps

helppppppppppppppppppppppppppppppppppppppppppppppppp

Answers

Remember that for simplifying cube radicals, we need to factor the terms inside the radical to create cubes to match the cubic root of the radical, so we can take that term out it:
The first thing we are going to do is decompose the numbers 16 and 54 into prime factors:
[tex]16=2^{4} [/tex] and [tex]54=(2)(3^{3} )[/tex]
Now we are going to separate each term into cubes:
[tex]2 ^{4} =(2)(2^{3} )[/tex]
[tex]x ^{6} =( x^{3} )( x^{3} )[/tex]
[tex]y^{5} =(y^{2})(y^{3} ) [/tex]
After that we can rewrite the expression:
[tex]2( \sqrt[3]{(2)(2^{3})x^{3}y }) +4( \sqrt[3]{(2)( 3^{3})( x^{3})( x^{3})(y^{2})(y^3}) } )[/tex]
Finally we can take out the cubes and simplify:
 [tex]2(2)(x) \sqrt[3]{2y} +4(3)(x)(x)(y) \sqrt[3]{2 y^{2} } [/tex]
[tex]4x \sqrt[3]{2y} +12 x^{2} y \sqrt[3]{2 y^{2} } [/tex]

The first choice, [tex]4x \sqrt[3]{2y} +12 x^{2} y \sqrt[3]{2 y^{2} } [/tex], is the correct answer.

we have
2[(16x³y)^(1/3)]+4[(54x³x³y³y²)^(1/3)]
2[(2³2x³y)^(1/3)]+4[(3³2x³x³y³y²)^(1/3)]
2[2x(2y)^(1/3)]+4[3x²y(2y)^(1/3)]
4x[(2y)^(1/3)]+12x²y[(2y)^(1/3)]
4x[(2y)^(1/3)]+12x²y[(2y)^(1/3)]

the answer is the option A) 4x[(2y)^(1/3)]+12x²y[(2y)^(1/3)]

A publisher pays 6% royalty to a book writer for the first 1,000 copies sold, and 5% on any number of copies above 1,000. They will print 3,000 copies. Find the sale price of the book if the writer expects to be paid $5,000.

Answers

Essay: How is Nervous System,  Endocrine System, and Reproductive System coordinated to maintain homeostasis(balance of the body). 

Find the exact volume of the cylinder.

Answers

i wouuldsay 80 becasue 10*8=80 so the volume of the cylinder is 80 ft

Which graphic organizer would help you visualize important events in the history of the U.S. space program? timeline point-by-point diagram cause-and-effect chart Venn diagram

Answers

Timeline would help your the most

Answer with explanation:

If we have to visualize important events in the history of the U.S. space program, we have to keep following things in mind

Year                              Program

19...                                         Satellite A

19..                                        On Moon ....

....                                        ............

......                                     .........

So, while scaling , we will keep year , that is time on any of the axis and program on another axis.

→→The Appropriate option will be

(a)  Time line

Which transformations can be used to show that circle P is similar to circle Q?

Circle P: center (2, −3) and radius 4
Circle Q: center (2, 3) and radius 28
.
Select each correct answer.

Circle Q is a translation of circle P, 6 units up.
Circle P is a dilation of circle Q with a scale factor of 24.
Circle Q is a translation of circle P, 6 units left.
Circle Q is a dilation of circle P with a scale factor of 7.

Answers

Circle Q is a translation of circle P, 6 units up and Circle Q is a dilation of circle P with a scale factor of 7 are both correct answers.

Similar figures can result when a figure is translated (moved or slid) to a different position or when it remains the same shape but in a different size (dilation).

Answer:  The answer is below i am in k12 just took the test

Circle Q is a dilation of circle P with a scale factor of 7. "

Circle Q is a translation of circle P, 6 units up.

Step-by-step explanation:

The amount of interest earned on a savings account varies directly with the amount of money saved. If $208 in interest is earned on $6,500 of savings, how much interest will be earned on $8,000 of savings over the same time period? $224 $240 $256 $272

Answers

The interest amount goes up by the same factor as the savings amount.
.. interest = 208*(8000/6500) = 256

The 3rd selection is appropriate.

Which graph shows a system of equations with a solution at (–1, 1)?




Answers

it should be the second one

Answer:- The second graph shows a system of equations with a solution at (–1, 1) .


Explanation:-

In the given pictures we have different lines intersecting parabola .

Given point is (-1,1) ,here x coordinate is negative and y coordinate is positive , which happen only in second quadrant of a Cartesian plane.

In graph 1 , there are two intersection points and none of them lie in the second quadrant. In graph 2 , there are two intersection points and one of them lie in the second quadrant and that is (-1,1). Therefore it shows a system of equations with a solution at (–1, 1) .In graph 3 , there are two intersection points and none of them lie in the second quadrant. In graph 4 , there are two intersection points and none of them lie in the second quadrant.

Suppose Karel wants to be the least expensive babysitter in the neighborhood. How much should she charge?

Suppose Karel wants to charge the same hourly rate as most of the other baby-sitters. How much should she charge?

Suppose Karel wants her hourly rate to be higher than the rate of half of other baby-sitters, but lower than the hourly rate of the rest of the babysitters. How much should she charge?

In addition to the babysitting rates charged by others, what might Karel consider when she sets her rates?

Answers

A. Karel should charge less than $2 if she wants to be the cheapest (x<$2). x would represent what she charges.
B. She should charge $2.75 if she wants to charge what most other sitters are charged because this amount occurs more than any other(the mode).
C. She should also charge $2.75 if she wants to be in the middle (median).
D. When deciding on a rate, Karel should also consider if there are any rates that are a lot lower or a lot higher because there might be a reason (more kids, unusual hours, relatives, etc...).
Final answer:

To be the least expensive babysitter, Karel should charge less than $2.00. If she wants her hourly rate to be higher than half the babysitters but lower than the other half, she could charge slightly less than $2.75. Beyond these rates, Karel should consider factors like her own experience, the specific tasks she'll perform, and the hours she'll work.

Explanation:

To determine how much Karel should charge for her babysitting services, we need to consider the other babysitting rates and find the midpoint. The other students charge the following amounts: Stephanie-$2.75, Jessica-$2.00, Michael-$3.00, Raoul -$2.50, Rolanda-$2.75, Harry -$2.25, Samuel-$2.25, Anita-$2.75.

To be the least expensive, Karel should charge less than the lowest rate, which is $2.00 charged by Jessica. So, Karel could charge $1.75, for example.

Now, suppose Karel wants to have an hourly rate higher than half the babysitters but lower than the other half. We need to organize the rates in ascending order, and then find the median value. If we do this, we find that the middle value (the median) is $2.75. Therefore, Karel could charge slightly less than this, for example, $2.70.

Lastly, Karel should also consider other factors when setting her rates. These might include her experience and skills as a babysitter, the average babysitting rates in her neighborhood or city, the specific tasks she'll be expected to perform, and the hours she'll be working.

Learn more about Setting Rates here:

https://brainly.com/question/33602846

#SPJ2

Given f(x)=3x^2+5 and g(x)=x−2 .

What is (fg)(x) ?


Answers

the correct answer is the second on
A is the correct answer

What is the square root of -1

Answers

the answer is i literally it is the letter i
square root of -1 = i

Need help on 8,9,10,11 and 12

Answers

8) 12 is 30% of some number, which we'll call x. We can write the percent as a decimal and solve for x
[tex]0.3x=12 \\ \\ x = 40[/tex].
The answer is 40.

9) 45% of 20 is [tex]0.45(20)=9[/tex].

The answer is 9.

10) 18 is [tex](18/30 = 60)[/tex]% of 30.

The answer is 60%.

11) 56 is 80% of some number x. We write 
[tex]0.8x=56 \\ \\ x = 70[/tex].

The answer is 70.

12) If the total cost on an item that costs $4.00 is $4.32, then the tax is 32¢. We want to find the percent of the total 4 that is .32. [tex] \frac{0.32}{4} = 0.08=8[/tex]%.

The answer is 8%.

You want to measure the length of a ribbon in inches. You only have a centimeter ruler. The length of the ribbon is 16 cm. Is the ribbon longer or shorter than 16 inches? How many inches long is it?

Answers

You need to convert centimeters to inches. there are 2.54 centimeters in each inch. 

Answer- it will be shorter than 16 inches. !6 centimeters to the inch is 6.29921 inches

Evaluate the function for
f(x) = x + 3 and g(x) = x2 − 2.
(f − g)(0)

(f − g)(0) =

Answers

Final answer:

To evaluate (f - g)(0), find f(0) and g(0) for the functions f(x) = x + 3 and g(x) = x^2 - 2, and then subtract the latter from the former. For f(0) we have 3, and for g(0) we have -2. Subtracting, we get (f - g)(0) = 5.

Explanation:

To evaluate the expression (f - g)(0), it means we need to find the value of the function f at x = 0, subtract the value of the function g at x = 0, and combine them. Given the functions f(x) = x + 3 and g(x) = x^2 − 2, let's calculate their values at x = 0:

For f(x), we have f(0) = 0 + 3 = 3For g(x), we have g(0) = (0)^2 − 2 = 0 − 2 = −2

Now, let's subtract g(0) from f(0):

(f - g)(0) = f(0) - g(0) = 3 - (-2) = 3 + 2 = 5

Therefore, the value of (f - g)(0) is 5.

Which of the following pairs of numbers contains like fractions?

A. 6⁄7 and 1 5⁄7
B. 3⁄2 and 2⁄3
C. 3 1⁄2 and 4 4⁄4
D. 5⁄6 and 10⁄12

Answers

1/2 and 3/2 .. They exact same denominators
D
BECAUSE 5*2=10
                  6*2=12

What is Y=x^2+6x+4 in vertex form?

Answers

y = (x+3)^2 - 5 here's the answer hope it helps

please someone help me on this

Brainliest available :)

Answers

the ones that i am sure that you should check are the 1. 4.

which number is a common factor of 32,48,and 80?

Answers

Answer:

Step-by-step explanation:

The GCF is found by listing the factors of all the numbers and picking the largest one that occurs in each.  The factors of your numbers are as follows:

32:  1, 2, 4, 8, 16, 32

48:  1, 2, 3, 4, 6, 8, 12, 16, 24, 48

80:  1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Looking at those factors you can pick out anything you'd like:  all the common factors, the greatest common factors, whatever you need.

Final answer:

The number 16 is a common factor of 32, 48, and 80, as it is the only number among the options given that divides evenly into all three numbers.

Explanation:

To find a common factor of 32, 48, and 80, we need to identify a number that divides evenly into all three numbers. A systematic way to do this is to list out the factors of each number and see which ones they have in common.

Factors of 32: 1, 2, 4, 8, 16, 32

Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

Factors of 80: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

From these lists, we see that the numbers 1, 2, 4, 8, and 16 are common factors of all three numbers. However, among the options provided (3, 9, 10, 16), 16 is the only number that appears in all lists and is therefore a common factor of 32, 48, and 80.

Which is the graph of the system x + 3y > –3 and y < 1/2x + 1?

Answers

The y-intercept of the first inequality is -1.
The y-intercept of the second inequality is +1.

The fourth graph has these correct.

The answer to this question is D.


Find the lateral area and the total area of the prism.

27 sq. ft.
36 sq. ft.
54 sq. ft.

Answers

we have that

1) the lateral area---------------->  L=P*h
P=(3+3+3)   h=6
L=(3+3+3)*6=54 in²

the answer part 1) is the lateral area is 54 in²

2) the total area=------------- > S=P*h+2B
2B=2*[3*3/2]     P*h=54

S=2*[3*3/2]+54=63 in²

the answer part 2) is the total area is 63 in²

Answer:

54 sq. ft.

Step-by-step explanation:

LA=ph or in other words Lateral Area= base perimeter * height

The perimeter of the base is 9 because 3+3+3=9.

The height is 6. So 6 * 9 = 54

Eli and Karl each throw a basketball straight up in the air at the same time. Eli is standing on a deck and the height of his ball, in meters, is given by the function f(x)=−4.9x2+12x+2.5 , where x is the number of seconds after the ball is released from his hands.

Karl is standing on the ground and the height of his ball, in meters, is given by the function g(x)=−4.9x2+14x , where x is the number of seconds after the ball is released from his hands.

There is a moment when the basketballs are at the same height.



What is this height?

Enter your answer, rounded to the nearest tenth of a meter, in the box.

Answers

Answer:

Just took the K12 quiz, and like killdrone said in the comments, the correct answer is 9.8 m

Step-by-step explanation:

Final answer:

The height at which both basketballs are at the same height is approximately 16.3 meters.

Explanation:

To find the moment when the basketballs are at the same height, we need to find the common height value for both functions.

Setting the functions equal to each other, we get: -4.9x^2 + 12x + 2.5 = -4.9x^2 + 14x

Simplifying the equation, we get 2x = 2.5, which means x = 1.25.

Substituting this value back into the original function for Eli, we get f(1.25) = -4.9(1.25)^2 + 12(1.25) + 2.5 = 16.325

Therefore, the height at which both basketballs are at the same height is approximately 16.3 meters.

PLEASE SOMEONE HELP ME ON THIS

Answers

it can be written as 15∧7/4

16 POINTS. Find x and y intercepts and show work.

I’m looking for number six.

Answers

What an awful question. 
y = (x^4 - 3x^3 + 4x)^2
y = x^2(x^3 - 3x^2 + 4)^2 
Go to Wolframalpha and put the above equation into the input line.
You see that there are 2 solutions at -1
There are 2 solutions at 0
There are  2 solutions at 2
You know that there are 2 solutions for each because the graph just touches the x axis. I wouldn't both to try and solve this thing using algebra.

that's what the graph would leave you to believe. There are 2 other solutions and they must be imaginary.  

Note to moderator. Wolfram dot com just shows graphs. the work is mine and I'm just using a tool to explain my answer.

**Giving away 20 points**. I need to know the arc length for EF and the area of sector EOF please:) (also plz show work thanks!!)

Answers

let us for a few seconds nevermind there's a circle at all, so we only really have a triangle by itself.

now, EF = 18, wait a second!  EF is the base of the triangle, and h = 10.725, wait a minute!!  "h" is the height of the triangle.

so, what's the area of a triangle whose base is 18 and has a height of 10.725?  yeap, we knew you'd know that one.

what's the length of the arcEF?  well, we know the central angle of ∡FOE is 80°, well, arc's get their angle measurement from the central angle they're in, so if ∡FOE is 80°, so is arcEF then.

Triangle HIJ has been reflected to create triangle H'I'J'. Segment HJ= H'J'= 4, segments IJ = I'J' = 7, and angles J and J' are both 32 degrees. Which postulate or theorem below would prove the two triangles are congruent?
A. SSS
B. SAS
C. ASA
D. HL

Answers

since you are given 2 sides and an angle of the triangles, the SAS (aka Side Angle Side) theorem would be used to prove the triangles are congruent
Other Questions
what is the approximate distance from Santiago to David? Completing a written contract to modify an unhealthy behavior serves to ________. 2.How does increasing the skater's mass change the skater's: kinetic energy? potential energy? total energy? A grain distributor can process 14.6 tons of grain an hour.How much can the distributor process in 8.75 hours? WILL GIVE BRAINLIESTWILL GIVE BRAINLIEST AND 50 pointsout of a port departed a steam boat with a speed of 36.8km/h. In 1.75 hours out of the same port and going the Sam direction departed a speed boat. In 1.8 hours after the the department of the speed boat, the distance between the speed boat and the steam boat was 86.9km. What was the speed boats speed in km/h? 3/4 of what number is 8? The crux of the nature versus nurture debate involves whether ________ question 1 options:a.physical or cognitive traits influence socialization.b.the physical or the social environment has a larger impact on culture.c.biology or socialization shapes human behavior.d.parents or peer groups influence children's behavior. Help Please..On a regional map, one inch represents 68 miles. How many miles apart are two cities that are three inches apart on the map? Jason-1 was launched to: measure ocean waves determine air moisture survey ocean currents all of the above What reason did the american party give in the 1840s to encourage immigration reform. What was the goal of the leaders who met at the Congress of Vienna in 1815? (During Mexican revolution) Select all the expressions that have the following quotient unscramble each of the clue words.tow-setppyorerptdodtiinaniiosdivlabvieraaileyquitnbistautorncnuatieqotiulinticpolma In Spanish write one complete sentence for each of the following verbs. Be sure to conjugate them correctly.1 - Yo (hacer) .....2 - Yo (poner) .....3 - Yo (salir) .....4 - Yo (conocer) .....5 - Yo (tener) .....Pay attention to (a) correct conjugation of the verb, (b) use of supporting vocabulary, and (c) overall quality of the sentence. Is there a single person or event you think exemplifies the changing US society of the 1960s and 1970s? Explain your choice and why you chose it. Or, explain why you think no single person or event exemplifies this period. Then, name an event that you think illustrates the changing perceptions of authority within the United States in the 1960s and 1970s and explain your reasoning. Of all that breathes and crawls across the earth,our mother earth breeds nothing feebler than a man.So long as the gods grant him power, spring in his knees,he thinks he will never suffer affliction down the years.But then, when the happy gods bring on the long hard times,bear them he must, against his will, and steel his heart.Which message from the passage is outside the cultural context of the author?A. Hard times bring about a loss of faith in the gods.B. Power is granted to humans rather than gainedC. People must rely on themselves to overcome adversity.D. There are many gods who gave powers to humans. Where a testator makes a specific bequest to his two children living at the time he executed the will, a child born after the will was executed who is not otherwise provided for by the testator is entitled to: an amount equal to one-third of the bequests to the other children to be paid out of those bequests. an amount equal to one-third of the bequest to the other children to be paid out of the residuary. an intestate share of the testator's estate to be paid from the residuary. no share of the testator's estate? The summation expression in the following series has an absolute value in it. Expand and evaluate the summation notation. What is the sum of the series? Which statement best describes the viewpoint the author expresses about intelligence? A. Firsthand intelligence is more effective than secondhand intelligence. B. It was not necessary to gather firsthand intelligence from East Berlin. C. Firsthand intelligence is intelligence taken from decrypted, or decoded, messages. D. The US had not been able to plant a spy in East Berlin to gain intelligence. The top of the pool table is 0.810 m from the floor. the placement of the tape is such that 0 m is aligned with the edge of the table (as shown). the winner of the competition wants to know if he has broken the world record for the break shot of 32 mph (about 14.3 m/s). if the winner\'s ball landed a distance 4.65 m from the table edge, calculate his break shot speed.