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
shusha [124]
2 years ago
5

Please help me out guys, Thank you.I am very poor at mathematics​

Mathematics
1 answer:
Lesechka [4]2 years ago
7 0

Answer:

79

Step-by-step explanation:

Given the expression

x + 1/x = 9

Square both sides

(x + 1/x)^2 = 9^2

x^2 + 2x(1/x)+ (1/x)^2 = 81

x^2 + 2 + 1/x^2 = 81

x^2+1/x^2+2 = 81

x^2+1/x^2 = 81-2

x^2+1/x^2+ = 79

Hence the value of x^2+1/x^2 is 79

You might be interested in
The polynomial of degree 3, P(x), has a root of multiplicity 2 at x = 3 and a root of multiplicity 1 at x = -2. The y-intercept
Maru [420]

Answer:

p(x) =  - 0.7(x - 3)^{2} (x + 2)

Step-by-step explanation:

We have that the polynomial, has a root of multiplicity 2 at x = 3 and a root of multiplicity 1 at x = -2.

This means the factored form of the polynomial will be.

p(x) = a(x - 3)^{2} (x + 2)

Also, it was given that, the y-intercept is y=-12.6.

This implies that:

- 12.6= a(0 - 3)^{2} (0 + 2)

- 12.6= a(- 3)^{2} (2)

- 12.6= 18a

Divide both sides by 18;

a =  \frac{ - 12.6}{18}

a= - 0.7

Therefore the polynomial is

p(x) =  - 0.7(x - 3)^{2} (x + 2)

7 0
3 years ago
Can someone please help?
Elis [28]

Answer:sure

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
351 students in 27 classes _____ students in each class
77julia77 [94]

Answer:

13

Step-by-step explanation:

351 divided by 27 = 13

7 0
2 years ago
Read 2 more answers
What is the circumference of a circle with a diameter of 11 centimeters
Fittoniya [83]

Answer:

c = 2\pi \: r \\ c = 2\pi \times 11 \\ c = 22\pi \: or \: c = 69.08

Good luck!

Intelligent Muslim,

From Uzbekistan.

7 0
3 years ago
Read 2 more answers
Which equation is represented by the graph shown in the image? A. y + 2= x B. y + 1= x C. y - 1= x D. y - 2= x Please show ALL w
olasank [31]

Answer:

A. y + 2= x

Step-by-step explanation:

Which equation is represented by the graph shown in the image?

A. y + 2= x

B. y + 1= x

C. y - 1= x

D. y - 2= x

Please show ALL work! <3

The graph shown has a slope of +1 and a y intercept of -2.

All given answer choices have a slope of +1, so that's not the problem.

We need one that has a y-intercept of -2, or the equation should be

y = x-2, or equivalently y+2 = x

which corresponds to answer choice A.

6 0
3 years ago
Other questions:
  • The area of the Pacific Ocean is 165 million km2. Use 15 million km2 as the area of the Garbage Patch. What is the ratio of the
    13·1 answer
  • What are the solutions to this quadratic equation? x^2+13=8x+3
    15·2 answers
  • Write the equation of the line in slope-intercept form.
    9·1 answer
  • What is the best approximation of the area of a circle with a diameter of 17 meters​
    8·1 answer
  • Lowest terms of 3/17
    5·2 answers
  • Please help me in this!!!
    10·1 answer
  • The radius of a circle is 9 M what is the circle's circumference use 3.14 for pi​
    11·2 answers
  • SOMEONE HELP ME PLEASE
    9·2 answers
  • Fill in the blank spaces please.
    10·1 answer
  • An item is regularly priced at 20$ . Hong bought it at a discount of 65% off the regular price . how much did Hong pay ?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!