1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ilya [14]
3 years ago
6

If (x^2+1)/x = 7 find x^2+(1/x^2)

Mathematics
1 answer:
White raven [17]3 years ago
4 0

Answer:

x²+(1/x²) = 47

Step-by-step explanation:

by identity : (a+b)² = a²+b²+2ab

(x+1/x)²= x²+(1/x)²+2(x)(1/x)

(x+1/x)²= x²+(1/x²)+2....(1)

since : (x²+1)/x = 7

(x²/x) +(1/x) = 7

x + (1/x )= 7

put the value for : x +(1/x) in (1) :

49 = x²+(1/x²)+2

x²+(1/x²) = 47

You might be interested in
Which graph shows the solutions to the inequality n<46
MaRussiya [10]

Are there choices to the answer or must you draw the graph?

If you can please attach images so I can help :)

7 0
3 years ago
Read 2 more answers
A coat that usually costs $123 is marked 1/3 off.What is the sale price of the coat. Round to the nearest dollar
Brut [27]

Answer:

$82

Step-by-step explanation:

If the coat is 1/3 off then you pay 2/3 of the price. To find a sale price, multiply the cost by 2/3.

123(2/3) = 246/3 = 82

7 0
3 years ago
What does -8(6x - 2) equal? How do I get my answer?
Free_Kalibri [48]

Answer:

-48x+16

Step-by-step explanation:

-8(6x - 2) first multiply each term in the parentheses by 8 to get -8x6x-8x(-2) and calculate the product to get your answer which is -48x+16

7 0
3 years ago
Read 2 more answers
Please help can't figure this out to save the life of me.
bogdanovich [222]
An equation written in slope-intercept form is y=mx+b, where m is a constant equal to the slope. Parallel lines have the same slope. So a line parallel to y=-2x+3 is y=-2x+5. Perpendicular lines have slopes which are negative reciprocals of each other. So a line perpendicular to y=-2x+3 is y=1/2x+7. y=2x-1 is neither parallel of perpendicular to y=-2x+3.
3 0
3 years ago
Read 2 more answers
Lucy was running a 10 mile race and the graph represents her running pace for the race. If the x-axis represents miles ran and t
Ostrovityanka [42]

Answer:

C

Step-by-step explanation:

The function multiplies by 8 so 6 would be 48 and 10 would be 80.

Have a great day!

4 0
3 years ago
Other questions:
  • A new car has an msrp of $19,150. it comes with a sport package priced at $2500, a stereo package priced at $600, and a destinat
    11·2 answers
  • A 13 and one fourth inch board is cut from a 38 and three fourths inch board. The saw cut takes three eighths inch. How much of
    14·2 answers
  • What is the value of -5^6<br>​
    13·1 answer
  • To prove that the triangles are similar by the SSS similarity theorem, which other sides or angles should be used? MN and SR MN
    14·2 answers
  • HELLLLLLP!!!!
    12·1 answer
  • How do you find lateral surface area​
    15·1 answer
  • Which of the following expressions are equivalent to - 4 + (4 + 5)?
    8·1 answer
  • Anyone know where i can get the answers for geometry holt mcdougal assessment book, specifically chapter 6 and up, willing to of
    14·1 answer
  • Math help please!<br> |120+x| x&lt;-120
    11·1 answer
  • What is the probability that a person chosen at random from this group has brown or green eyes? startfraction 3 over 25 endfract
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!