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
blondinia [14]
3 years ago
11

Find the value of a and b if root3-1/root3+1+ root3+1/root3-1=a+root3 b​

Mathematics
1 answer:
Digiron [165]3 years ago
4 0

Answer:

a=4 and b = 0

Step-by-step explanation:

Given : \dfrac{\sqrt 3 -1}{\sqrt 3+1}+\dfrac{\sqrt 3+1}{\sqrt 3-1}=a+\sqrt 3 b

To find, The value of a and b

Solution,

Solving LHS of the given equation,

\dfrac{(\sqrt 3-1)^2+(\sqrt3+1)^2}{(\sqrt 3+1)(\sqrt 3-1)}=a+\sqrt 3 b

Since,

(a-b)^2=a^2+b^2-2ab\\\\(a+b)^2=a^2+b^2+2ab\\\\(a-b)(a+b)=a^2+b^2

So,

\dfrac{3+1-2\sqrt 3+3+1+2\sqrt 3}{3-1}=a+\sqrt 3 b\\\\4=a+\sqrt 3 b

or

4+0=a+\sqrt 3 b

On comparing we get :

a = 4 and b = 0

You might be interested in
Find the range of the function.<br> f(x) = -7x2 – 3<br> -
Irina-Kira [14]

Answer:

its x: x< -3

Step-by-step explanation:

ya

8 0
2 years ago
Find the slope of a line that passes through points (-3, -3) and (2, 8)
yaroslaw [1]
I hope this helps you

8 0
3 years ago
Read 2 more answers
Caroline's gross annual salary is $47,448 what is the maximum amount of rent she can afford to pay?
Dovator [93]
The awser is letter a


3 0
3 years ago
Read 2 more answers
A school newspaper took a survey of 100 students. The results of the survey showed that 43 students are
seropon [69]
We need the rest of the question :)
6 0
2 years ago
A string passing over a smooth pulley carries a stone at one end. While its other end is attached to a vibrating tuning fork and
nasty-shy [4]

Answer:

correct option is C)  2.8

Step-by-step explanation:

given data

string vibrates form =  8 loops

in water loop formed =  10 loops

solution

we consider  mass of stone = m

string length = l

frequency of tuning = f

volume = v

density of stone = \rho

case (1)  

when 8 loop form with 2 adjacent node is \frac{\lambda }{2}

so here

l = \frac{8 \lambda _1}{2}      ..............1

l = 4 \lambda_1\\\\\lambda_1 = \frac{l}{4}

and we know velocity is express as

velocity = frequency × wavelength   .....................2

\sqrt{\frac{Tension}{mass\ per\ unit \length }}   =   f × \lambda_1

here tension = mg

so

\sqrt{\frac{mg}{\mu}}   =   f × \lambda_1     ..........................3

and

case (2)  

when 8 loop form with 2 adjacent node is \frac{\lambda }{2}

l = \frac{10 \lambda _1}{2}      ..............4

l = 5 \lambda_1\\\\\lambda_1 = \frac{l}{5}

when block is immersed

equilibrium  eq will be

Tenion + force of buoyancy = mg

T + v × \rho × g = mg

and

T = v × \rho - v × \rho × g    

from equation 2

f × \lambda_2 = f  × \frac{1}{5}  

\sqrt{\frac{v\rho _{stone} g - v\rho _{water} g}{\mu}} = f \times \frac{1}{5}     .......................5

now we divide eq 5 by the eq 3

\sqrt{\frac{vg (\rho _{stone} - \rho _{water})}{\mu vg \times \rho _{stone}}} = \frac{fl}{5} \times \frac{4}{fl}

solve irt we get

1 - \frac{\rho _{stone}}{\rho _{water}}  = \frac{16}{25}

so

relative density \frac{\rho _{stone}}{\rho _{water}} = \frac{25}{9}

relative density = 2.78 ≈ 2.8

so correct option is C)  2.8

3 0
3 years ago
Other questions:
  • A box of 12 popsicles cost $4.44 what is the Popsicles unit rate
    13·2 answers
  • I don’t get this can someone help pls
    5·2 answers
  • X^2+_x+36 <br> What is the Perfect Square Trinomials?
    12·1 answer
  • Which of the following is(are) the solution(s) to. |2x-1|= 10 ?
    7·2 answers
  • Help meh or i will die :P
    12·2 answers
  • Consider the equation below. f(x) = 2x^3 + 3x^2 − 12x (a) Find the interval on which f is increasing. (Enter your answer in inte
    7·1 answer
  • Write 48596 in standard form​
    8·2 answers
  • Could someone please help me with this?
    8·2 answers
  • Assume varies inversely with . Find the constant of proportionality and the function.
    15·1 answer
  • Solve the exponential equation by the method of relating the​ bases, first rewriting the equation in the form
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!