x^2-6x=b, make x the subject

Answers

Answer 1

Answer:

x =  3 ±√(b + 9).

Step-by-step explanation:

We use Completing the Square:

x^2 - 6x = b

(x - 3)^2 - 9 = b

(x - 3)^2 = b + 9    Taking square roots of both sides:

x - 3 = ±√(b + 9)

x =  3 ±√(b + 9).


Related Questions

If you save $200 a month for 40 years at an APR of 12%, how much will you have in 40 years? * $1,176,000 $2,353,000 $3,715,000 $7,430,000

Answers

Answer:

$2,061,941.74

Step-by-step explanation:

The computation of the amount in 40 years is shown below:

Given that

PMT = $200 × 12 = $2,400

NPER = 40

RATE = 12%

PV = $0

The formula is shown below:

= -FV(RATE;NPER;PMT;PV;TYPE)

After applying the above formula, the future value is $2,061,941.74

hey....lol i need help on this

Answers

W = 32 blaaaa blaaaaaaaaa blaaaaa

Answer:

W = 32

Step-by-step explanation:

lol.

Please help me solve this.

Answers

Answer:

0.565

Step-by-step explanation:

hope it helps

have a great day!!

Percents! Please answer!!


Answers

Answer:

39%

Step-by-step explanation:

83-last price

83 last price

100 x ?

100 * last price = 83 . x

x= 39

Sasha is feeling a rectangular box with ribbon and wants to know the amount of space in the box which statement is true about the amount of space inside the box

Answers

The available options are:

The space inside the box is the surface area, which is 192 in.2.

The space inside the box is the surface area, which is 144 in.2.

The space inside the box is the volume, which is 192 in.3.

The space inside the box is the volume, which is 144 in.3.

Answer:

The space inside the box is the volume, which is 144 in.3.

Step-by-step explanation:

Give that the rectangular box Sasha is filling has three dimensions of 12inches, 3 inches, and 4 inches for its sizes. Therefore to know the amount of space in the box the correct answer is 12 * 4 * 3 = 144 cubic inches.

Hence, the right answer to this question is "The space inside the box is the volume, which is 144 in.3."

Answer: The answer is D

The space inside the box is the volume, which is 144 in.in.3

Step-by-step explanation:

PLEASE HELP !! 100 POINTS !! (and brainliest)

Find the area for the following figure. Explain or show how you got your answer.

Answers

Answer:

area =no of full square + half square =24+1/2×5=26.5 unit ²

A. Use this diagram of a right triangle to derive and prove the Pythagorean Identity, based on sin θ and cos θ. Start with what you know about the relationship among a (adjacent side), o (opposite side), and h (hypotenuse). Using the diagram and the labeled components, define sine and cosine. Incorporate these definitions in your equation. In your response, include all steps and calculations.



B. With respect to , the adjacent side of the triangle has a length of 6 cm and the opposite side has a length of 3 cm. Find the value of the hypotenuse . Then, use these values to confirm the Pythagorean Identity for this triangle.

Answers

0x - 12 so she is wrong. 2x hope this helps

A rectangular room is 12-1/2 feet long and 10-1/3 feet wide. What is the area of the room?

Answers

Answer:

the length of room is 24 feet

Step-by-step explanation:

Let the breadth be x .

Then, Length, l = x + 9

According to the question,

Area of rectangle = length × breadth

Putting the values of length and breadth, we get:

360 = ( x + 9 ) x

360 = x² + 9x

x² + 9x - 360 = 0

x² + 24x - 15x - 360 = 0

x( x + 24) - 15(x + 24) = 0

( x + 24 ) = 0 or ( x - 15 ) = 0

x = - 24 or x = 15 [ Negative number is ignored ]  

Now,  

Length, l = x + 9 = 15 + 9 = 24 feet

Thus, the length of room is 24 feet .

Line segment AB has endpoints A(5,−8) and B (1,−12). Which of the following is the approximate lenght of line segment AB?

Answers

Answer:

square root of (1-5)²+(-12+8)²

square root of (16+16)

square root of 32

Hi please help thank you so much

Answers

Answer:

23.09 ft

Step-by-step explanation:

tan = [tex]\frac{opposite}{hypotenuse}[/tex]

⇒ tan 13 = [tex]\frac{x}{100}[/tex]

tan of 13 is 0.23086

⇒ 0.23086 = [tex]\frac{x}{100}[/tex]

multiply each side by 100

⇒ 0.23086 x 100 = [tex]\frac{x}{100}[/tex] x 100

solve:

⇒ 23.0868

round to the nearest hundreth:

⇒ 23.09

2.8t+5.7t= answer plsss

Answers

Answer:7.15t

Step-by-step explanation:

You have to add 2.8t plus 5.7t together

8.5t adding 2.8t+5.7t
5+2 = 7
0.8+0.7 = 1.5

John can play 12 songs on his guitar but learns 1 new song every week. Aiden can play 4 songs but learns 2 every week

Answers

Given :

John can play 12 songs on his guitar but learns 1 new song every week. Aiden can play 4 songs but learns 2 every week.

To Find :

How many weeks will it be before Aiden knows as many songs as john?

Solution :

Let, after x weeks Aiden know a songs and John know j songs.

The linear equation for both the situation is :

a = x + 12       .....( For Aiden )

j = 2x + 4       ......( For John )

We need to find in which week Aiden knows as many songs as John.

For this , a = j

x + 12 = 2x + 4

x = 8

Therefore, in 8th week both of them know the same number of songs.

Select all the ordered pair that are solutions to the system

Answers

0,-1 works . Not sure about the rest- if it’s meaning anything within the shaded area, everything but 3,0 and -3,-2 works.

I need step by step too please!!!

Answers

Answer:

x=-34

Step-by-step explanation:

PLS HELP ASAPPPP ILL GIVE BRAINLIEST OR WHATEVER NO LINKS!!!!!!!!!!!!!!!!!!

Answers

1) Power of a Product

2) Power Rule (or Power of a Power)

Answer:

-Number 1 is Power of a Power Property, I think

-Number 2 is Power of a Power Property

NEED HELP PLEASE !!!!!!

Answers

The slope would be negative

HELP PLEASE!! i need help on A and B. PLEASE DONT ANSWER IF YOU DONT KNOW!!

Answers

Answer: B

Step-by-step explanation:

you use the coordinates to find the sides

3 part a) What is the y-intercept of this graph? Explain in words what the y-
intercept means in this situation.*

Answers

When u want to get the y- intercept you just have to look at the number that the line hits that is on the y - axis so the answer is 20 and if you’re wondering the slope is -4/5 negative 4 over 5!!!

Find the area of the figure.
5.5 cm
6.5 cm
22 cm
The area of the figure is

Answers

Answer:

264

Step-by-step explanation:

6.5x22+22x5.5=264

PLEASEEE I need the answer asap

Answers

Answer:

Angle B = 47.3°

Step-by-step explanation:

We are to find Angle B

b = 6.8cm

C = 70°

c = 8.7cm

We solve using Sine rule

b/sin B = c/ sin C

6.8/sin B = 8.7/sin 70

Cross Multiply

sin B × 8.7 = 6.8 × sin 70

sin B = 6.8 × sin 70/8.7

B = arc sin ( 6.8 × sin 70/8.7)

B = 47.26265°

Approximately to 3 significant figures

= B = 47.3°

The line x − y = 2 is on a coordinate plane and contains EF, which is one

side of square EFGH. What is the slope of the line that contains FG?

Answers

Answer:

The slope of the line that contains FG is -1

Step-by-step explanation:

Given

[tex]x -y= 2[/tex] --- equation of EF

Required

Determine the equation of FG

First, we calculate the slope of EF

[tex]x -y= 2[/tex]

Make y the subject

[tex]y = x - 2[/tex]

A linear equation has the form:

[tex]y = mx + b[/tex]

Where

[tex]m = slope[/tex]

By comparison:

[tex]m = 1[/tex]

In square EFGH, EF and FG are perpendicular.

So, the relationship between their slopes is:

[tex]m_2 = -\frac{1}{m_1}[/tex]

Where

[tex]m_1 = m = 1[/tex] --- slope of EF

The equation becomes:

[tex]m_2 = -\frac{1}{1}[/tex]

[tex]m_2 =-1[/tex]

Jasmine always carries cash. Her friends think she should get a credit card. Which reasons show the benefits of having a credit card?

******Select all that apply.******

helps save money
safer
more convenient
free to use
rewards programs

Answers

Answer:

A and b

Step-by-step explanation:

it could also be c but it's definitely a and b

Answer:

Might be:

Safer

Rewards programs

More convenient

Online shopping

Step-by-step explanation:

Gustave measured his pace and determined that for him, s steps make up one mile. One day Gustave walked 6300 steps, which was 3 miles.

Answers

Answer:

2100

Step-by-step explanation:

6300/3

The area of a square field of side 13 m is​

Answers

Answer:

169 sq m

Step-by-step explanation:

= 13 × 13 = 169 sq m.

David is a salesman at a Electronics and Appliances shop and receives a
10
%
10% commission on the sale of each refrigerator.



​What is the price of the refrigerator, if the commission he earned on selling it was
$
500
$500? PLZZZ HELP

Answers

Answer:

550

Step-by-step explanation:

550

Netti works as a waitress in a restaurant. They have numbers for each kind of order. On a busy day, tired Neeti lines up all the orders at the end of her shift. She notices this number and is amused by the lack of variety of the food she served that day. It reads 56786675568568657. Each 5 means one pancake was ordered, each 6 means one egg was ordered, each 7 means a waffle was ordered. Each 8 meant that an egg order was canceled and a pancake was requested. How many sweet breakfast food dishes did she serve on this day?​

Answers

Answer:   (I don't know if this is right or not)

7 pancakes

3 eggs

3 waffles

Step-by-step explanation:

4 pancakes

5 eggs

8=3

+3 pancakes

-3 eggs

Find the missing side of this right triangle

Answers

Answer:

4, tell me if wrong

Step-by-step explanation:

c² = b² + a²

now, 5x5 = 25

3 x 3 = 9

25 - 9 = [tex]\sqrt{16\\}[/tex]

4

Please help will give brainliest

Answers

Answer:

24 because 6 times 4 equal 24 and thats the area

Step-by-step explanation:

an architect find some unlabeled dimensions on a blueprint and no skill has shown a 15 foot wall that has already been built measures 1.5 in on the drawing in your wall that has to be built measures 3 in on the drawing how long will the new wall be ​

Answers

Probably 7 feet high

Show your work!
If the length of a rectangle in terms of x is x² + 2x – 3, and its width is 2x2 + 3x + 5,
what is the perimeter of this rectangle? Don't leave any spaces
in
your
solutions.
Perimeter: units

Answers

Answer:

answer is 20+12x^6

Step-by-step explanation:

Multiply x^2+2x-3 by 2

length equals 2x^4+4x-6

simplify. 6x^5-6

multiply 2x2+3x+5 by 2

width equals 4x4+6x+10

simplify. 16+6x+10

simplify again. 26+6x

add length and width- 20+12x^6

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