How do you work out a quadratic equation with a maximum value?

Answers

Answer 1
Alright, so if you have the equation ax^2+bx+c=0, the maximum value is -b/2a for the x value if a is negative, or it's infinity (since the parabola goes on forever). For the y value, simply plug (-b/2a) into the equation. If a is positive, it gives you the minimum value, and if it's negative then it's the maximum. 

Given the maximum value, you know that a is negative, so given the x value of the maximum value you know if b is negative or not. In addition, you can plug numbers in for b and a for what works, as well as having a point from the maximum value to plug in.

Related Questions

Why does the slope formula not work for vertical lines?

Answers

because vetical lines have a 0 slope, a vertical line looks like
 
x=7   

Which unit rates would be appropriate for describing the rate of growth of a tree?

Select each correct answer.



inches per year

millimeters per week

milliliters per minute

miles per hour

Answers

I got two answers is that okay? The question said to select each correct answer implying that there could be more than one.



inches per year - this could make sense as well because you could easily measure the number of inches a tree grew in a year. 

millimeters per week- I suppose this makes sense how fast the specific tree grew. So, if you are alllowed to pick two answers I think you could make a strong case to your teacher that this unit has the potential to be logical rate unit for tree growth. 

milliliters per minute - NO. I think that this would be an illogical rate unit to use for trees because their growth is so slow that it wouldn't change by a measurable amount in just a minuet.  

miles per hour - NO. Trees do not grow fast enough for this to be a logical unit rate to use. 

Angle A and angle B are supplementary. The measure of angle A is 4 less than 7 times the measure of angle B. Find the measure of A and B.

Answers

A = 157, B = 23 The definition of supplementary angles is that they add up to 180 degrees. So A+B = 180. And A = 7B - 4. So write down the formula A + B = 180 Substitute the formula for A in terms of B 7B - 4 + B = 180 Combine terms 8B - 4 = 180 Add 4 to both sides 8B = 184 Divide both sides by 8 B = 23 Now calculate A in terms of B A = 7B - 4 A = 7 * 23 - 4 = 161 - 4 = 157 Verify that A and B add up to 180 157 + 23 = 180

Three consecutive even integers have a sum of 24 . find the integers.

Answers

Let first even number even integer = 2x
2x + 2x+2 + 2x+4 = 24
6x+6 = 24
6x = I8
x = 3

Integers = 6, 8, IO
Final answer:

The question is about finding three consecutive even integers whose sum is 24. The integers are determined to be 6, 8, and 10 by setting up and solving a simple algebraic equation.

Explanation:

To solve for the three consecutive even integers whose sum is 24, let's assume that the first even integer is x. Because we know that even integers occur 2 units apart, we can say that the next two consecutive even integers are x + 2 and x + 4 respectively.

Now, we know that the sum of these three integers is equal to 24. Therefore, we can set up an equation:

x + (x + 2) + (x + 4) = 24

By simplifying and solving the equation, we obtain x = 6. Therefore, the three consecutive even integers are 6, 8, and 10.

Learn more about Consecutive Even Integers here:

https://brainly.com/question/34290341

#SPJ2

The Porter family has a net income of $5,000. If they want to reduce their food budget by $50, how much would the new food budget be? $

Answers

The answer will be 1,200

The new food budget is $400, the difference in the savings is $50 and the amount of money saved now is $2700.

What is an Equation?

An equation is a mathematical statement formed when two algebraic expressions are equated using an equal sign.

The equations are useful in determination of unknown parameters.

The Porter family has a net income of $5000.

The food budget of the family is $450

The budget is reduced by $50

The new food budget is $450 - $50

The new food budget is $400

Initially they used to save,

= $5000 - $450-  $1900

= $2650

Now as the expense has been reduced by $50,

The new savings will be,

= $2650 + $50

= $2750

It seems that your question is incomplete, the complete question is :

The Porter family has a net income of $5,000. They have a monthly food budget of $450 and $1900 is extra expenses, If they want to reduce their food budget by $50, how much would the new food budget be and what will be the difference in the savings.

To know more about Equation

https://brainly.com/question/10413253

#SPJ6

Sam can rent a canoe for $3 an hour. if he rents the canoe , he would also have to pay $15 for a non-refundable deposit. he has $30 to spend on canoeing. write an equationto find out how many hours sam can canoe?

Answers

3x+15-$30 X representing the number of hours i believe that should be the answer if not i would need the answer choices to really better answer you question.

is someone can help me please please i will give 20 points please

Answers

With an inverse function, we essentially solve for x and then switch f(x) (which can be called y) with x. For y=x/8-7, we add 7 to both sides to get y+7=x/8. Multiplying both sides by 8, we get 8*(y+7)=x. Switching y and x, we get 8*(x+7)=y. This is shown as the third option.

For y=20-0.25x, we can subtract 20 from both sides to get y-20=-0.25x. Next, we can multiply both sides by -1 to get 0.25x=-y+20=20-y. Multiplying both sides by 4 (since 1/4=0.25 and we want to find x), we get x=4(20-y). Switching x and y, we get y=4(20-x), which is the first option. I challenge you to do the other two based off of the techniques I used!

Need help with number 12. Thanks

Answers

7x - 7 = 3x + 45
4x = 52
x = 13

7x - 7 = 7(13) - 7 = 84

y - 6 = 180 - (84 + 63)
y - 6 = 180 - 147
y - 6 = 33
y = 39

The volume of a pyramid is 27 cubic centimeters and its height is 6 cm. Find the area and the base of the pyramid.

Answers

Final answer:

The area of the base of a pyramid with volume 27 cubic cm and height 6 cm is 13.5 square cm. If the base is a square, the length of each side of the base is approximately 3.67 cm.

Explanation:

The volume of a pyramid can be given by the formula V = (1/3) * Area of the base * Height. In your question, you have been provided that the volume V is 27 cubic cm and the height h is 6 cm. Then Area of the base would be (3 * V) / h = (3 * 27 cubic cm) / 6 cm = 13.5 square cm. Since the base of a pyramid can be of various shapes, we have only calculated the area here. Now I assume that the base is a square for simplicity. If the area A of a square is given by the formula A = side^2, we can find the side length of the base by taking the square root of the area = sqrt(A) = sqrt(13.5 square cm) = 3.67 cm approximately.

Learn more about Pyramid Volume and Base Area here:

https://brainly.com/question/19505484

#SPJ12

Solve the inequality
-1/3h ≥ 7
A. h ≥ –21
B. h ≤ 7 1/3
C. h ≤ –21
D. h ≥ -2 1/3

Answers

the answer is C because each time you divide an negative number to an inquality you must change the direction

What is the value of m?
1
_m =12-m
3

Answers

[tex]\bf \cfrac{1}{3}m=12-m\impliedby \textit{now, if we multiply both sides by }3 \\\\\\ \boxed{3}\cdot \cfrac{1}{3}m=\boxed{3}\cdot 12-\boxed{3}\cdot m\implies m=36-3m\implies 4m=36 \\\\\\ m=\cfrac{36}{4}\implies m=9[/tex]

Devon pays $39.95 for her gym membership. After that she pays $6.95 for each visit to the gym. What is the greatest number of visits she can afford if the total amount she spends cannot be more than $88.60?

Answers

$88.60 to spends                                       $48.65 to spends divide that by
-$39.95 gym membership                          $6.95 give you a total of 7 visits
________________
$48.65 left

Oliver is working on a puzzle of the Eiffel Tower. The tower in the puzzle is 28.5 in. tall. The packaging lists the scale as 1:415. What is the height of the actual Eiffel tower to the nearest foot?

Answers

In the puzzle 1 is equivalent to 415 in reality.

If you have 28.5 in tall, you need to multiply by 415

( 28.5 in ) ( 415 ) = 11827.5 in 

The heigh of the actual eiffel tower is: 11827.5 in

1 foot = 12 in.

11827.5 in / 12 in = 985.625 ft   

The heigh of the actual eiffel tower is: 986 ft


How do solve angle PRQ and angle QRS

Answers

PRQ and QRS should add to PRS

(3x-8)+(2x+6)=98
5x-2=98
5x=100
x=20

Plug 20 into both expressions:
3(20)-8
60-8
52 degrees= PRQ. <===========

2(20)+6
40+6
46 degrees= QRS. <==========

Find the area of the figure.
*50 ft2
*41 ft2
*42 ft2
*38 ft2

Answers

the answer is 38 ft2. Make it into to rectangles. One 2 by 4 ad the other 3 by 10


We start by splitting the shape into two rectangles as shown in the diagram below:

Area of shape A = 10' × 3' = 30'
Area of shape B = 6' × 2' = 12'

Total area = 30' + 12' = 42'

How to determine the domain and range of a rational function?

Answers

The domain is essentially what x can equal, so unless there's a square root (where x has to be positive as anything squared is positive) or division (in division, the denominator can't be 0) you should be good for the most part. For the range, it's what y (the output) can equal, so I'd suggest getting the domain then figuring out what the highest and lowest y points are (as well as if y can't be anything)

The table shows the annual profits (in thousands of dollars) of a county fair from 2008 to 2012. What must the 2012 profit be (in hundreds of dollars) to break even over the five-year period?

Answers

Answer:

In year 2012, 0.45 thousands dollars will bring the break even for the company.

Step-by-step explanation:

The table shows the annual profits of a county fair from 2008 to 2012.

We have to calculate the profit in 2012 to get the break even over the five year period.

Total profit in four years = profit in year (2008 + 2009) = 2.5 + 1.75 = 4.25 thousand dollars

Total loss in four years = loss in year (2010 + 2011) = 3.3 + 1.4 = 4.7 thousand dollars

Net profit or loss = Net profit - net loss = 4.25 - 4.7 = -0.45

There is a net loss of 0.45 thousand dollars.

If we get a profit of 0.45 thousand dollars in year 2012, we will be in the situation of no profit and no loss (break even).

Therefore, profit of 0.45 thousands of dollars is the answer.

34 days to 2 weeks the ratio is

Answers

Work: 34 days to 2 weeks ratio
34 days to 2×7 =14 days
34:14
Simplify
17:7
Answer: 17:7

The ratio of 34 days to 2 weeks is [tex]\(\frac{34}{2 \times 7}\)[/tex].

To find the ratio of 34 days to 2 weeks, we first need to convert 2 weeks into days, since there are 7 days in a week. Therefore, 2 weeks is equivalent to [tex]\(2 \times 7\)[/tex] days, which is 14 days.

Now, we can set up the ratio of 34 days to 14 days (2 weeks):

[tex]\[ \text{Ratio} = \frac{34 \text{ days}}{14 \text{ days}} \][/tex]

To simplify this ratio, we can divide both the numerator and the denominator by their greatest common divisor (GCD). The GCD of 34 and 14 is 2.

Dividing both by 2, we get:

[tex]\[ \text{Ratio} = \frac{34 \div 2}{14 \div 2} = \frac{17}{7} \][/tex]

So, the simplified ratio of 34 days to 2 weeks is [tex]\(17:7\) or \(\frac{17}{7}\)[/tex].

The sum of three fourths of a number and 1 is 5

Answers

Do you need to solve for "a number"? 

Let's call it x. So (3/4)x + 1 = 5.
Subtract 1 from both sides because we want to separate that x from everything else. 

(3/4)x = 4.

Multiply both sides by 4.
3x = 16.

Divide both sides by 3. x = 16/3.

To test it, (16/3)(3/4) + 1
(48/12) + 1
4 + 1
5

What is the degree of the power function represented in the table?

1
2
3
4

x h(x)
−2 −8
−1 −2
0 0
1 −2
2 −8

Answers

Answer: Second option.

Step-by-step explanation:

In order to find the degree of the power function represented in the given table, you must find the difference of the y-values (values of [tex]h(x)[/tex]) until they diferences are constant.

1) First differences:

[tex]-2-(-8)=6\\\\0-(-2)=2\\\\-2-0=-2\\\\-8-(-2)=-6[/tex]

2) Second differences:

You must find the differences between the First  differences. Then, you get:

[tex]2-6=-4\\\\-2-2=-4\\\\-6-(-2)=-4[/tex]

You can notice that the second differences are constant. This means that the degree of the power function  represented in the given table is:

[tex]Degree=2[/tex]

The degree of the power function represented in the table is [tex]\boxed2[/tex].Option (b) is correct.

Further explanation:

Given:

The options are as follows,

(a). 1

(b). 2

(c). 3

(d). 4

Explanation:

The highest power of the polynomial function is known as the degree.

The value of x is -2 and the value of the function is -8.

The value of x is -1 and the value of the function is -2.

The value of x is 0 and the value of the function is 0.

The value of x is 1 and the value of the function is -2.

The value of x is 2 and the value of the function is -8.

The function from the table can be expressed as follows,

[tex]f\left( x \right) = - 2{x^2}[/tex]

Substitute [tex]-2[/tex] for [tex]\text{x}[/tex] in equation [tex]f\left( x \right) = - 2{x^2}.[/tex]

[tex]\begin{aligned}h\left( { - 2}\right) &= - 2\times {\left( { - 2} \right)^2}\\&= - 2 \times 4\\&= - 8\\\end{aligned}[/tex]

The degree of the power function represented in the table is [tex]\boxed2.[/tex]Option (b) is correct.

Option (a) is not correct.

Option (b) is correct.

Option (c) is not correct.

Option (d) is not correct.

Learn more:

Learn more about inverse of the functionhttps://brainly.com/question/1632445. Learn more about equation of circle brainly.com/question/1506955. Learn more about range and domain of the function https://brainly.com/question/3412497.

Answer details:

Grade: High School

Subject: Mathematics

Chapter: Polynomial

Keywords: power function, degree, represented, table, degree of the polynomial, roots, linear equation, quadratic equation, zeros, function, polynomial, solution, cubic function, degree of the function.

Geometry proofs - paragraph proofs to formal proofs! Prove RS = TU

Answers

it is proven true using the definition of congruent segments :)
Final answer:

To prove RS = TU, we can use the congruence of corresponding parts of congruent triangles. By the side-angle-side (SAS) congruence postulate, if two sides and the included angle of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent. Therefore, RS = TU.

Explanation:

To prove that RS = TU, we need to show that the lengths of RS and TU are equal. In order to do this, we can use the congruence of corresponding parts of congruent triangles. Let's assume that triangles RST and TUV are congruent.

By the side-angle-side (SAS) congruence postulate, if two sides and the included angle of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent.

Since RST and TUV are congruent, we can conclude that RS and TU are congruent as well. Therefore, RS = TU.

The vertices of a triangle are located at X(-2,-1), Y(2,5) and Z(4,3). What is the perimeter of this triangle?

Answers

If you plot the points you will find you have to use the distance formula. Pick out 2 pairs label them (x1,y1) (x2,y2) then plug it into the distance formula. The repeat for the other sides. So you should get (2,5) (4,3) plug into distance formula what is get it distance between those two points, then (4,3) (-2,-1) plug into distance formula to get an answer, lastly (-2,-1) (2,5) plug in. Now you have three answers add all together and here is your perimeter of a triangle.
Final answer:

The perimeter of a triangle with vertices at X(-2, -1), Y(2, 5) and Z(4, 3) is calculated using the distance formula to find the lengths of each edge. After calculating the lengths of the edges (XY, YZ and ZX), they are summed to produce the perimeter, which is 2√52 + √8.

Explanation:

To calculate the perimeter of a triangle with vertices at given coordinates, we must first compute the distances between each pair of points. Using the distance formula, d= √[(x₂-x₁)²+ (y₂-y₁)²], we find the distances between points X(-2,-1), Y(2,5) and Z(4,3).

Specifically, XY = √[(2 - -2)² + (5 - -1)²] = √[4² + 6²] = √52, YZ = √[(4 - 2)² + (3 - 5)²] = √[2² + -2²] = √8, and ZX = √[(4 - -2)² + (3 - -1)²] = √[6² + 4²] = √52.

Together, these line distances constitute the edges of the triangle. Adding these distances together (two √52 and √8), we find the perimeter of the triangle is 2√52 + √8.

Learn more about Perimeter here:

https://brainly.com/question/31695951

#SPJ2

Which of the following is not included in the five number summary?


A- median

B- maximum

C- mean

D- minimum

Answers

The answer is C. mean 

The mean is not included in the five number summary.

It is required to choose the following is not included in the five number summary.

What is statistics ?

Statistics are defined as numerical data, and is the field of math that deals with the collection, tabulation and interpretation of numerical data. It is the study and manipulation of data, including ways to gather, review, analyze, and draw conclusions from data.

Given:

Actually its the mean. The 25th percentile is Q1 which is used to calculate inter-quartile range i.e.

[tex]IQR=Q_{1} -Q_{3}[/tex]

The mean has nothing to do with the five number summary or box and whisker plot.

The  five number summary consists of five values: the most extreme values in the data set (the maximum and minimum values), the lower and upper quartiles, and the median.

Therefore, the mean is not included in the five number summary.

Learn more about statistics here:

https://brainly.com/question/23091366

#SPJ2

Evaluate 4m+23+np−3, when m=7, n=2, and p=8. enter your answer in the box.

Answers

The value of expression 4m + 23 + np - 3 for m = 7, n = 2, and p = 8 is 64.

To solve the given expression, we substitute the given values of m, n, and p into the expression:

4m + 23 + np - 3

Given m = 7, n = 2, and p = 8, we substitute these values into the expression:

4(7) + 23 + (2)(8) - 3

28 + 23 + 16 - 3

28 + 23 = 51

51 + 16 = 67

67 - 3 = 64

17 − 2v = 41 solve v

Answers

Final answer:

To solve the equation 17 - 2v = 41, subtract 17 from both sides to get -2v = 24. Then divide both sides by -2 which gives v = -12.

Explanation:

To solve the equation 17 - 2v = 41 for v, first we need to isolate v on one side of the equation. We can start by subtracting 17 from both sides to rid the left side of numbers without the variable v. This gives us the equation:

-2v = 41 - 17

-2v = 24

Now, to solve for v, we divide both sides of the equation by -2:

v = 24 / (-2)

v = -12

Therefore, the solution to the equation is v = -12.

Rae earns $60 for playing music on saturday nights at the local coffee house. she makes an average of $5.25 in tips per hour. write the function of rae's earnings, and solve for how much she would make after 4 hours. y = 5.25x + 60; $65.25 y = 60x + 5.25; $85.75 y = 5.25x + 60; $81.00 y = 60x + 5.25; $185.25

Answers

Okay. So for this equation, she would make $60, plus $5.25 in tips each hour. So for this, she would get $60 + 5.25h. Plug in 4 hours, and she would make $21 off of tips, plus the $60, which brings her up to $81 total. The answer is C.

Find the equation of the line which is perpendicular to the line y=− 1 3 x+6 through the point (2,4). answer:

Answers

y=1/13x +50/13
.......................

What are the steps to find x

Answers

40 = 2x + 7

First, subtract 7 on both sides so you can get the variable on one side:

40 = 2x + 7
-7           -7
33 = 2x

Now, divide both sides by 2 to isolate x:

33 = 2x
33/2 = x

Hope this helps!

Answer this for a Brainliest

Answers

she would have a weekly gross pay of $404.

There are 3 consecutive integers with a sum of 69. what are they?

Answers

The integers can be represented by x, x+1 and x+2

x+x+1+x+2=69
3x+3=69
3x=66
x=22

Final answer, 22+23+24
Other Questions
|X+4|=4|X+4|=-4Plz help Find all the AdverbsRemarkably talented and focused as an athlete, Althea Gibson overcame incredibly difficult challenges to win the Ladies' Singles title at Wimbledon in 1957. There are no adverbs. Remarkably, difficult, at, and in are the only adverbs. Remarkably and incredibly are the only adverbs. the distance from the earth to the Sun is approximately 9.310^7 miles. if light travels 1.210^7 miles in 1 minute, how many minutes does it take the light from the sun to reach the earth ? What was this New Orleans building most likely influenced by?A.the citys French immigrant heritageB.the citys Spanish immigrant heritageC.the citys Chinese immigrant heritageD.none of the above the city of New Orleans architecture developed independently of any immigrant influencesAnswer is A a driver dove to a location 6 3/5 meters below sea level he then dove to a second location 8 1/5 meters below sea level how many meters are there between the two locatiojn Find the sum of 3 - 7i and 8 + 4i. PLEASE HURRY!! 20 POINTSWhich is an example of image advertising? The big, bad stain stopper eat more, weigh less looks great, tastes even better Join the thousands of others Ivan needs to memorize words on a vocabulary list for french class. he has memorized 30 of the words, which is two-thirds of the list. how many words are on the list In the mercantile system, european states sought to answer solve for y- 4y3=5y+2 How does the American economy incorporate the main characteristics of a free enterprise economy Two males weigh 195 pounds and are 45 years old. one has a body fat percentage of 13% and the other's body fat percentage is 29%. which individual likely burns more calories at rest? I can type 225 minutes in 5 minutes.at that speed,how many words can I type x divided by 7 equals 12Solve For x For a set of ordered pairs, the variable corresponding to the first coordinate is the How could you represent the division as a fraction if 5 peopld shared 2 blocks if 6 people shared 5 blocks Charters, like those found in the british colonies, are also called ________. compacts deeds cartas constitutions The branch of the autonomic nervous system that prepares the body for quick action in an emergency is the ________ division. Equivalent ratio for 36/12? Read the following paragraph and select the correct answer. A prison taint was on everything there. The imprisoned air, the imprisoned light, the imprisoned damps, the imprisoned men, were all deteriorated by confinement. As the captive men were faded and haggard, so the iron was rusty, the stone was slimy, the wood was rotten, the air was faint, the light was dim. Like a well, like a vault, like a tomb, the prison had no knowledge of the brightness outside, and would have kept its polluted atmosphere intact in one of the spice islands of the Indian ocean. (from Little Dorrit, Book the First, Chapter 1, by Charles Dickens) What is the main idea of this paragraph? The prison was dark and empty. The prison was on one of the spice islands. "A prison taint was on everything there." "The prison had no knowledge of the brightness outside." Steam Workshop Downloader