Mathematics College

Find all values f x that make the equation true: 4/x+4=x-2/x

Answers

Answer 1

Step-by-step explanation:

4/x + 4 = x - 2/x

multiply everything by x

4 + 4x = x² - 2

x² - 4x - 6 = 0

the general solution to such a quadratic equation

ax² + bx + c = 0

is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

x = (4 ± sqrt((-4)² - 4×1×-6))/(2×1) =

= (4 ± sqrt(16 + 24))/2 = (4 ± sqrt(40))/2 =

= (4 ± sqrt(4×10))/2 = (4 ± 2×sqrt(10))/2 =

= 2 ± sqrt(10)

x1 = 2 + sqrt(10) = 5.16227766...

x2 = 2 - sqrt(10) = -1.16227766...

Related Questions

The New York Times and CBS News conducted a nationwide poll of 1048 randomly selected 13- to 17-year-olds. We can consider the sample to be a SRS.
a. Of these 1048 teenagers, 692 had a television in their room. Give a 95% confidence interval for the proportion of all people in this age group who had a TV in their room at the time of the poll
b. Of the 1048 teens surveyed, 189 named Fox as their favorite television network. Give a 90% confidence interval for the proportion of all people in this age group who would choose Fox as their favorite network.
c. Suppose you were to change the confidence level in (b) to 95% using the same sample. How would the confidence interval change? No calculations necessary.
a. The confidence interval would be the same width but shifted to the left
b. The confidence interval would be the same width but shifted to the right
c. The confidence interval would have the same center but be wider
d. The confidence interval would have the same center but be narrower

Answers

I’m sorry can u explain better pls?? Thanks that’s will help so much!!

whats the square footage of 10 by 10​

Answers

Answer: 100 square feet

How many square feet is a 10x10 room? The square footage of a room 10 feet wide by 10 feet long is 100 square feet. Find the square footage by multiplying the width (10 ft) by the length (10 ft).

How
many solutions does the equation 4X + 8 = - 2 - 2 + 5x have?
Two
® One
Zero
Infinitely many

Answers

Answer:

x = 12

Step-by-step explanation:

by direct solution

otherwise this system many solution

Answer:

one

Step-by-step explanation:

4x+8=-4+5x

or, 5x-4x = 8+4

hence,

x=12

Enter a value of b that will make the expression factorable.
x2^ + bx – 40

Answers

B would be 6
X^2+6x-40
(x-4)(x+10)

Pls help I’ll mark brainliest

Answers

Answer:

Answer:

Step-by-step explanation:

Step-by-step explanation:

Answer:

Answer:

Step-by-step explanation:

Step-by-step explanation:

Answer:

Answer:

Step-by-step explanation:

Step-by-step explanation:

Answer:

Answer:

Step-by-step explanation:

Step-by-step explanation:

1 + 4 = 5
2 + 5 = 12
3 + 6 = 21
5 + 8 =​

Answers

The answer would be 13, good luck.

The price of an item has risen to $184 today. Yesterday it was $80. Find the percentage increase.

Answers

130% because if 80 =100% you take way 80 fro 184 to get 104 and get the % of that


1600, 400, 100, 25, ...
O Arithmetic
O Geometric
O Neither

Answers

This is a GEOMETRIC sequence as each number is being multiplied by 1/4

A garden is in the shape of a circle with a radius of 10 feet. Edging is place around the garden. How much edging, in feet, is needed to
go around the garden? Round your answer to the nearest whole number. Use 3. 14 for TT.
please!! I need it right jnow

Answers

Answer:

62.8 ft (of edging)

Step-by-step explanation:

We need to find the circumference of this circle, using C = 2(pi)r.

Here, C = 2(3.14)(10 ft) = 62.8 ft (of edging)

Answer:

63 feet is needed to  go around the garden.

(3,3) (3,3) endpoints of a vertical line, a horizontal line, or neither?

Answers

Answer:

neither

Step-by-step explanation:

the endpoints are the same so it would be neither because it's a point not a line.

Which of the following sequences of transformations maps KLMN onto ABCD

Answers

Answer:

The answer is neither.

Step-by-step explanation:

Just did the test on Khan.

Victor sells bouquets of flowers at a farmers market. He earns a flat rate for each bouquet sold, shown on the graph below. The table below shows the number of bouquets Victor sold last week. Fill in the table to show how much money Victor earned.

Answers

Answer:

Attach the graph so we can help lol

Step-by-step explanation:

HELP PLEASE! MATHHHHGGKSNSJSJ

Answers

Answer:

192y16

Step-by-step explanation:

mark me brainlist

Find the value of x in the parallelogram below.

Answers

Answer:

B)  x = 12

Step-by-step explanation:

m∡EOU = m∡TQE

m∡EOU =180 - (39+45) = 96°

m∡TQE:  7x + 12 = 96

7x = 84

x = 12

mark the points on the graph !!! please help

Answers

Answer:

Go to an online grapher called desmos . com where you can graph and get the answer! The website is used in khan academy

Step-by-step explanation:

Please answer now! i will mark brainliest!

Answers

Answer:

I would round to 3, so the length of the sidewalk would be about 8 x 3 = 24 feet.

Step-by-step explanation:

[tex]2\frac{5}{6}[/tex] is closer to 3 and if you convert it to decimal which will be 2.83 with a bar on top of 3, it's still close to 3.

Anyone can help please?

Answers

X=60°

because 33+87= 120 and 180-120=60

Can someone help me with this its preatty easy

Answers

Answer:

31,400

Step-by-step explanation:

Hope this helps and have a wonderful day!!!

Find the area of each figure. A = _ in²

Answers

Answer:

1824in^2

Step-by-step explanation:

area of rectangle:

L x W = A

32 x 48 = 1539

area of triangle:

(L x W) / 2 = A

(48 x 12) / 2 = 288

add:

1539 + 288 = 1824in ^2

please help urgent!!!!

Answers

Answer:

1

Step-by-step explanation:

see attached for more information

hope it's helps

-2x + y=-15. y=5x solved by substitution

Answers

Answer:

−

2

+

=

−

1

5

=

5

Step-by-step explanation:

5x= answer

Lester made a scale drawing of a house. The scale he used was 1 inch : 2 feet. In the drawing, the hall closet is 3 inches long. What is the length of the actual closet?

Answers

Answer: 6 feet

Step-by-step explanation:

1 inch= 2 feet

so

3 inches = 6 feet

ratio

Answer: 6

Step-by-step explanation:

Which statement must be correct?
A.
B.
C.
D.

Answers

Answer:

A suits the most

Step-by-step explanation:

Answer:

D. RS intersects PQ at point R

Step-by-step explanation:

COMMON CORE REVIEW
1. Find the percent of change from 32 feet to 79 feet. Round to the nearest tenth, if necessary. Then state whether the percent of change is percent of increase or percent of decrease.
2. Factor this expression: 27+108n
3. Factor this expression: 56x + 16

THANKS AGAIN!!

Answers

Answer:

146.9

Step-by-step explanation:

I'm not sure of the answer but if I'm wrong tell me I'll continue trying it is a pleasure to help you.

I need help on homework its due tomorrow

Answers

look this up on quizlet

Find the mean of the set of data.
3, 3, 8, 3, 8, 3, 8, 8, 1,3
The mean is ?? HELP WILL MARK BRAINLIEST

Answers

Answer:

Step-by-step explanation:

8

Step-by-step explanation:

48 because your adding them all up

calculeaza
2+(8-6)=
(9-7)+5=
10-(1+8)=
(3+7)-9=
(1+2+3)-5=
10-(2+3+4)=​

Answers

Answer:

1. 2+(8-6)= 4

2+2=4

2. (9-7)+5= 7

2+5=7

3. 10-(1+8)= 1

10-9=1

4. (3+7)-9= 1

10-9=1

5. (1+2+3)-5= 1

6-5=1

6. 10-(2+3+4)=​ 1

10-9=1

⊕║Using Sampling to Predict Lesson 10-5║ ⊕


To determine how many students at a middle school bring their lunch from home, all the students on one school bus are surveyed. identify if this is BIASED OR UNBIASED. Explain your reasoning!!

Answers

I would say biased because only the student on one school bus are being surveyed. While there are other buses of kids and kids who get dropped off. So they are in a way discriminating those other kids. Just surveying one bus of kids out of all the other kids won’t get the correct number of students who bring their lunch from home.

pls help pls help plsssssss

Answers

For the 1st question your just going to

Whats 2x36 PLEASE HELP ILL GIVE BRAINLYEST

Answers

Answer:

It is 72

Step-by-step explanation:

Hope it helps

Answer:

72

Step-by-step explanation:

It was very easy question.

Other Questions
17. Which theory states that personality is formed within us, arising from basic inbornneeds, drives, and characteristics?A. Humanistic theory B. Psychoanalytic theory C. Trait theory D. Cognitive theory What Makes Great Zimbabwe unusual in African architecture is the fact that it is? A suit seeking recovery of money only in the amount of $5,000.00 could be initially filed in either Justice, County Civil Court at Law, or District CourtTrue/False? Consider the linear function y=5x+12y=5x+12 and the linear function represented by the table of values below. Great systems of ________ are the hallmark of great civilizations.Multiple Choicelawsmanufacturingthinkingleadershipcommunications What is the formula of mean method? What makes a case more likely to be heard by the Supreme Court? What was Thomas Hobbes view on society citizens? ABC Company was established this year to produce and sell toys. The company has the following operating results for the year. Total Sales ...................................................................................50,000units Total Variables cost......................................................................100,000 birr Selling Price ................................................................................3 birr Total cost is 75% of total revenue. Assuming linearity, answer the following questions. a) How much is the amount of the fixed cost? b) Develop the total revenue, total cost and total profit equation in terms of quantity. c) Determine the breakeven point. JS 19. Evaluate the integral || curl d using Stokes Theorem, where F =-yi+xj+ryck and S is the part of the sphere r2 + y2 + 22 = 4 that lies above the cy-planes, oriented upward. A. 27 B. 0 C. 87 D. -87 E. 47 How do you use a Venn diagram? Find the slope of (7,-4) and (7,-1) give a great expiation and u will get marked as brainiest. What is computer for short answer? What will be the median of the given data if the mean is 4.5 5 7 7 8 a 5 4 3 1 2? Create a new Microsoft Access database named DryCleaning.Note that Microsoft Access does not support the use of SQL scripts to create databases. In a Microsoft Word document, type the SQL script that you would use to create the database.Add a table named Customers. In Microsoft Word, type the SQL script that you would use to create the table. Include the following fields:CustomerNumber (AutoNumber, Primary Key, required)FirstName (Text(25), required)LastName (Text(25), required)Phone (Text(12), required)Email (Text(100))Add a table named Invoice. In Microsoft Word, type the SQL script that you would use to create the table. Include the following fields:InvoiceNumber (Number-Long Integer, required, Primary Key)CustomerNumber (Foreign Key, Number-Long Integer, Required)DateIn (Date/time, required)DateOut (Date/time)TotalAmount (Currency)Add a table named Invoice_Item. In Microsoft Word, type the SQL script that you would use to create the table. Include the following fields:ItemNumber (AutoNumber, Primary Key, required)InvoiceNumber (Foreign Key,Number-LongInteger, required)Item (Text(50), required)Quantity (Number-Long integer, required)UnitPrice (Currency, required)Write INSERT statements to add the data provided below to the tablesCreate a new Microsoft Access database named DryClIn one Word documentpaste the SQL statement to meet the following criteria. Put a title above each as stated and save each query with the title name. You will add needed documentation from Part II to this document.List the phone and last name of all the customers. Titled this01CustomerPhone-LastNameList the phone and last name of all the customers with the first name "Nikki." Titled this 02NikkiPhoneLastNameList the phone, first name, and last name of all the customers having phone numbers with "2" and "3" as the second and third numbers, respectively. Titled this 03PhoneWith?23.Determine the maximum and minimum total amount. Save As04AverageTotalAmount.Show the first and last names of all the customers who have had an order with total amount greater than $100.00. Use a subquery and present the results first sorted by last names in the ascending order and then by first names in the descending order. Titled this05CustomersTotalAmountGreaterThan100.From the Customers table, concatenate each customer's last name and first name by using the comma-space-delimited technique; name the virtual column as "Full Name." Titled this06CustomerLastFirstNamesConcantenated.Use a subquery to show the first and last name of all the customers who have had an order with an item named "Dress Shirt". Present the results first sorted by last name in the ascending order (Titled this07FirstLastNamesDressShirtSortedLastName) and then by first name in the descending order. Titled this08FirstLastNamesDressShirtSortedFirstNameDescending.Use a join with a subquery to show the first name, last name, and total amount of all the customers who have had an order with an item named "Dress Shirt". Present the results first sorted by last name in the ascending order (Titled this09FirstLastNamesDressShirtSortedLastNameWithTotal) and then by first name in the descending order. Titled this10FirstLastNamesDressShirtSortedFirstNameDescendingCalculate the average total amount. Titled this 11AverageTotalAmount. Predictive analytics is used by organizations to: identify the best decisions for a particular situation. analyze business policies through visual representations. understand past and current performance. envisage the future by detecting patterns and relationships in data. Which of the following statements is true of goods-producing processes? They require more flexibility and adaptation to special circumstances than service processes. They require extensive customer participation in service creation and delivery. They use employees as a substitute for physical inventory. They are mechanistic and controllable because of the lack of customer participation. Please ans asap What was the legacy of the Spanish Empire?1. Explain the long term effect Spain had on the countries they ruled in South America. Things to include: Language? Religion? What was the impact on the indigenous peoples way of life? How many people died?2. Answer the question; should Spain be proud of their Empire? Write one paragraph explaining why they should be proud. Write another paragraph on why they should not be proud Write your own conclusion How is Animal Farm an allegory for the Russian Revolution and the rise of communism in the Soviet Union? Asking, "What if" is part of which Continuity Planning step?Disruption assessmentEvaluateEnact/executeMitigation/recovery planDisruption scanning What structure is unique to a virus?