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2 years ago

The rationalisation factor of 2 + √3 isstep by step for BRAINLIST

Mathematics

1 answer:

dangina [55]2 years ago

5 0

Answer:

rationalising factor wud be

2 - root3

as on multiying both and applying identity we end up

2^2 - (root3)^2

4 - 3 = 1

we got a rational number so rationalisng factor is

2 - root3

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2 years ago

Find+the+positive+value+for+α+if+the+radius+of+the+circle+3x^2+3y-6αx+12y-3α=0+is+4

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Answer:

$\alpha=3$

Step-by-step explanation:

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We are given the equation of a circle as

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Complete squares and rearrange:

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$x^2-2\alpha x+\alpha^2+y^2+4y+4=\alpha+\alpha^2+4$

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We can see that, if r=4, then

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3 years ago

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Step-by-step explanation: ^

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2 years ago

the sum of three numbers is 55. the second number is twice the first and the third number is five less than the second. What are

ArbitrLikvidat [17]

Let the first number be = x

Then the second number = 2x

The third number = 2x - 5

Their sum = 55

This can be written in an equation as =

x + 2x + 2x - 5 = 55

= x + 2x + 2x = 55 + 5 ( transposing -5 from LHS to RHS changes -5 to +5 )

= x + 2x + 2x = 60

= 5x = 60

= x = 60 ÷ 5 ( transposing ×5 from LHS to RHS changes ×5 to ÷5 )

= x = 12

The first number = x = 12

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The third number = 2x - 5 = 24 - 5 = 19

Therefore , the three numbers are 12 , 24 and 19 .

5 0

2 years ago

The rationalisation factor of 2 + √3 isstep by step for BRAINLIST ​

The rationalisation factor of 2 + √3 isstep by step for BRAINLIST