What is the largest value of $k$ such that the equation $6x - x^2 = k$ has at least one real solution?

Answers

Answer 1

Step-by-step explanation:

6x - x² = k

=> x² - 6x + k = 0,

For there to be at least 1 real solution,

The discriminant b² - 4ac must be at least 0.

We have (-6)² - 4(1)(k) >= 0.

Therefore 36 - 4k >= 0, k <= 9.

Hence the largest value of k is 9.

Answer 2

Answer:

9

Step-by-step explanation:

Rearranging, this is the equation x^2 - 6x  = -k. Completing the square, we add 9 to both sides, and x^2 - 6x + 9 = 9 - k. Factoring the left side, we have (x - 3)^2 = 9 - k. In order for this equation to have at least one real solution, the right-hand side must be nonnegative. Thus, we have 9 - k [tex]\geq[/tex] 0 and k [tex]\leq[/tex] 9. Thus, the largest possible value of k is 9.


Related Questions

Evaluate the following expression.
7^0 =

Answers

Answer:

1

Step-by-step explanation:

Using the general exponent rule, that

[tex]a^{0}[/tex] = 1, so

[tex]7^{0}[/tex] = 1

CONSTRUCTION The area of Liberty Township’s square playground is represented by the trinomial x^2 - 10x + 25. Write an expression using the variable x that represents the perimeter.

Answers

Answer:

X=5 and X=5

Step-by-step explanation:

X²-10x+25=0

X²-5x-5x+25=0

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

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

X-5=0. x-5=0

X=5. x=5

1 and 2 is all I need and you guys would help me from not getting beat

Answers

Answer:

1. -10

2. -11

Step-by-step explanation:

please help me !!! easy question and i’ll give brainliest

Answers

Answer:

x = 35.1 degrees

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

cos theta = adj/ hyp

cos x = 27/33

Take the inverse cos of each side

cos ^-1 ( cos x) = cos ^-1(27/33)

x =35.09680123

To the nearest tenth

x = 35.1 degrees

Answer:

x=35.1

Step-by-step explanation:

cos(x)=[tex]\frac{27^{2}+33^{2}-360 }{2(27)(33)}[/tex]

x=35.1(correct to the nearest tenth)

Jada had read 2/3 of a book . She has read 60 pages so far . How many pages are in the whole book?

Answers

90 pages in the whole book

Is it possible for 2 numbers to have a difference of a 8 and a sum of 1

Answers

Answer:

Yes, it is possible for two numbers to have a difference of 8 and a sum of 1.

Step-by-step explanation:

is y=-2x linear or non linear

Answers

Answer:

Step-by-step explanation:

Iinear

I’ll give you brainlest if you answer this question correctly it goes to the first person!

Answers

Answer:

It would be -4 for "x" and -6 for "y"

Step-by-step explanation:

x+z=-4+-6=-10

x-y=-4--6=2

Solve each equation.
1)
9c + 1 = 10

Answers

Answer:

doesnt c = 1

Step-by-step explanation:

I don't even know I'm just tryna get points

.) What is the unit rate in miles per gallon?
=

Answers

There is no unit you just need to work it out by dividing the miles travelled by the amount of gallons it took to refill.

Answer:

25 miles per gallon 10 gallons is the UNIT RATE.

In a translation, what math process is used?
a) addition/subtraction
b) multiplication
c)division

Answers

Addition/ subtraction

Jessica is returning home from a trip. The function d(t)=458-60t models the distance, in miles, that Jessica is from her house t hours after she began returning home. How far is Jessica from her home 5 minutes after she began returning home?


A.

5 miles


B.

158 miles


C.

300 miles


D.

453 miles

Answers

Answer: D. 453 miles .

Step-by-step explanation:

Given: The function [tex]d(t)=458-60t[/tex] models the distance, in miles, that Jessica is from her house t hours after she began returning home.

At t = 5 minutes = [tex]\dfrac{5}{60}[/tex] hour     [1 hour = 60 minutes],

Distance covered by Jessica in 5 minutes = [tex]d(\dfrac{5}{60})=458-60(\dfrac{5}{60})[/tex]

[tex]=458-5=453\ miles[/tex]

Jessica is 453 miles from her home after 5 minutes she began returning home.

Hence, the correct option is D. 453 miles .

Explain a line graph in your own words

Answers

Answer:

A line graph (also known as a line plot or line chart) is a graph which uses lines to connect individual data points that display quantitative values over a specified time interval. Line graphs use data point "markers" that are connected by straight lines to aid in visualization.

-5√112
I have to solve this using perfect square factors, is anyone familiar with those?

Answers

Answer:

-20√7

Step-by-step explanation:

Here. we want to write this in the simpler form

we can have 112 as; 16 * 7

√112 = √(16*7)

√112 = 4 √7

so, we have

-5 * 4 √(7 = -20 √7

Danica walked from point A to point B. The total distance she walked was 1.5 miles. Which equation represents the distance from point A to point B that Danica walked?

Answers

Answer: t=0.7+1.5

Step-by-step explanation:

The equation that represents the distance from A = (a, b) and B = (c, d) is

√(c - a)² + (d - b)² = 1.5

What is the distance between two points of a line?

The distance between two points of a line is given as:

Distance = √(c - a)² + (d - b)²

We have,

Let points A and B have the coordinates.

A = (a, b)

B = (c, d)

Now,

Distance = √(c - a)² + (d - b)²

√(c - a)² + (d - b)² = 1.5

Thus,

The equation is

√(c - a)² + (d - b)² = 1.5

Learn more about the distance of a line here:

https://brainly.com/question/14645718

#SPJ5

A 24-foot ladder is placed 7ft from the wall, (as shown)
if the top of the ladder slips down 4 ft, how many feet will the bottom slide out?
a. 4 feet
b. 8 feet
c. 15 feet
d. 20 feet

anyone who answers this (first) will get 15 points!

Answers

I’m pretty sure it’s c.15 feet it’s the best answer
I would say d or c hope it helps

What is the diameter?​

Answers

Answer:

36 in because the radius×2=diameter

Step-by-step explanation:

The radius will be 36 I think

What is T6 in exponential form?
6
DONE

Answers

Answer:

T6 is already in exponential form.

Step-by-step explanation:

The reason why T6 is already written in exponential form is beacuse nothing further can be done with this equation.

Need help now!!!! Find the area of a rhombus

Answers

Answer: 80 in

Step-by-step explanation:

Answer:

64 in

Step-by-step explanation:

a car is traveling at a constant velocity of 60km/h east for 4 hours. choose the correct statement about the acceleration of the car

Answers

I’m just saying this so I can get points but I think if u divide u should get da answer
So by definition and in math talk, A = dV/dT = 0/4 = 0 acceleration. ANS. A hope that helped

Hy my friend needs help with her math I say it’s pretty easy but it cuz I have my hw to do .. so can someone help her out ?!

Answers

There are 16800 grams :)

Answer: the answer I’m is 16,800

Step-by-step explanation:

To find the number of kg you multiply the number by 1,000.

16.8*1,000=16,800

What is the product?​

Answers

Answer:x=45.6

Step-by-step explanation:

Answer:

(x^2 - 5x^2 + 4x) / 2x + 8

Step-by-step explanation:

(x^2 - 16) / 2x + 8 * (x^3 - 2x^2 + x) / (x^2 + 3x -4)

(x^5 - 2x^4 - 15x^3 + 32x^2 -16x) / 2(x - 1)(x + 4)(x + 4)

x(x-1)(x-1)(x+4)(x-4) / 2(x - 1)(x + 4)(x + 4)

(x^3 -5x^2 +4x) / 2x + 8

Find the Measure of angle O
(see image)
Only real answers, please

Answers

Answer:

From the given figure we can see that :---

MN||PO, MN=PO and MP=NO

Therefore, angle M=angle N (adjacent sides of the trapezoid)

[tex](8x - 16) = (6x + 20) \\ 2x = 36 \\ \boxed{x = 18}[/tex]

angle M=angle N= (6×18)+20=108+20 =128°

angle O =(180°-128°)=52°

Hence, angle O is 52°.

What is the commutative property? (Please don't copy and paste from go.ogle I need a good explanation)

Answers

Answer:

it basically means that the order in how you multiply doesnt matter. so wether u type 5 x 4 or 4 x 5 in ur calculator, you'll get the same answer either way. this works for when you want to multiply and divide, but not when you wanna subtract or divide.

Step-by-step explanation:

its basically a property that says that if you wanna swap the numbers/variables that are on one side of this specific type of equation (multiplication and addition), you can!

Answer:

yooo

Step-by-step explanation:

the communitive property  is when you have the same number or same equation but just reverse it. For example, (5x+67) with the communitive property could be (67+5x). Its just the equation you are given but reversed and since they are the same numbers, you will get the same answer either way you do the problem, hope this helps you lol.

Write an equation that represents the line.

use exact numbers​

Answers

Answer:

y = 5/6x + 8/3

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

A boat travel 448 km using 112 litres of gasoline.How far can the boat travel using 1 litre of gasoline​

Answers

Divide total distance by total liters used.

448 km / 112 liters = 4 km per liter.

Using 1 liter of gas the boat can travel 4 km.

Answer:

1 litre = 4 km

Step-by-step explanation:

448/112 = 4/1

Cross multiplication, 448 x 1 divided by 112 = 4

Which of the points are solutions to the inequality check all that apply

Answers

Answer:

B,C,D

ONLY

Step-by-step explanation:

Answer:

(-2,-5)

(1,1)

(3,5)

for ed

Step-by-step explanation:

PLEASE HELP! A positive number is 1/3 of another number. The sum of the numbers is five less than the square of the larger number. Find the numbers. PLEASE SHOW WORK Thanks!

Answers

Answer: The numbers are 1 and 3.

Step-by-step explanation:

Let x = smaller number , y= larger number.

As per given,

[tex]x=\dfrac{y}{3}[/tex]   ...(i)

[tex]x+y=y^2-5[/tex]       ...(ii)

Put value of x from (i) in (ii)

[tex]\dfrac{y}{3}+y=y^2-5\\\\\Rightarrow\ \dfrac43y=y^2-5\\\\\Rightarrow\ 3y^2-4y-15=0\\\\\Rightarrow\ 3y^2-9y+5y-15=0\\\\\Rightarrow\ 3y(y-3)+5(y-3)=0\\\\\Rightarrow\ (y-3)(3y+5)=0\\\\\Rightarrow\ y=3 \ \ or\ y=\dfrac{-5}{3}[/tex]

Since numbers are positive , so y=3 is correct.

And x will be 1  [from (i)]

Hence, the numbers are 1 and 3.

Paul buys 5 bags of chips and 9 bags of pretzels for $16.95. Ian buys 1 bag of chips and 1 bag of pretzels for $2.55. Find the cost of one bag of chips and one bag of pretzels.

Answers

Answer: The cost of one bag of chips is $1.5 and cost of one bag of pretzels is $1.05.

Step-by-step explanation:

Let x= Cost of one bag of chips

y= Cost of one bag of pretzels.

As per given, we have

5x+9y=16.95        ...(i)

x+y=2.55            ...(ii)

Multiply 5 to (ii), we get

5x+5y=12.75     ...(iii)

Eliminate (iii) from (i), we get

[tex]4y=4.2\\\\\Rightarrow\ y=1.05[/tex]

Put value of y in (ii), we get

[tex]x+1.05=2.55\\\\\Rightarrow\ x=2.55-1.05=1.5[/tex]

Hence, the cost of one bag of chips is $1.5 and cost of one bag of pretzels is $1.05.

The diagram shows two 10 by 14 rectangles which are edge-to-edge and share a common vertex. It also shows the centre O of one rectangle and the midpoint M of one edge of the other.
What is the distance OM?

Answers

Answer:

15

Step-by-step explanation:

Pretend there is a triangle where the hypotenuse is MO

to find the bottom side, we need to find half of 14 (7) and half of 10 (5)

That tells us that the bottom of the triangle is 12.

To find the next side, you will need to use 14 and subtract 10, leaving us with 4. Half of 10 is 5 so 5+4 is 9, so the side facing up is 9.

Now using Pythagorus, the root of 12^2 and 9^2 is 15

Final answer, the distance from O to M is 15

The distance OM is 15 and this can be determined by using the Pythagorean theorem and the given data.

Given :

The diagram shows two 10 by 14 rectangles that are edge-to-edge and share a common vertex. It also shows the center O of one rectangle and the midpoint M of one edge of the other.

The following steps can be used in order to determine the distance OM:

Step 1 - Let the OEM be the triangle where the angle OEM is 90 degrees.

Step 2 - The distance OE is given by:

[tex]\rm OE = \dfrac{10}{2}+\dfrac{14}{2} = 12[/tex]

Step 3 - Now, the distance ME is given by:

[tex]\rm ME = 14-10+\dfrac{10}{2} = 5 + 4 = 9[/tex]

Step 4 - Apply Pythagorean theorem on triangle OEM in order to determine the distance OM.

[tex]\rm OM^2 = 12^2+9^2[/tex]

OM = 15

For more information, refer to the link given below:

https://brainly.com/question/11897796

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