disombaallen disombaallen

03-11-2015
Mathematics

contestada

Simplify the radical expression by rationalizing the denominator.
4 divided by the square root of 21.

Respuesta :

03-11-2015

[tex]\frac{4}{\sqrt{21}} = \frac{4}{\sqrt{21}} \times \frac{\sqrt{21}}{\sqrt{21}} =\boxed{ \frac{4\sqrt{21}}{21}}[/tex]

Answer Link

Otras preguntas

in the equation y=mx+b, b represent1)slope 2)rise3)y-intercept4)x-intercept

Hi can someone please help Which expressions are completely factored? 18x^4−12x^2=6x(3x^3−2x) 24x^6−18x^5=6x^5(4x−3) 12x^5+8x^3=2x^3(6x^2+4) 20x^3+12x^2=4x^2(5x

definition of heat in own words

The War of 1812 was fought between the United States and Great Britain. There a few causes for this war.were being armed by the U.S.’s rival, mainly from weapon

hi im writing a story on elephant poaching and half will be in the perspective of an elephant and im unsure as to how i can write in the perspective of the elep

A billiard ball with a mass of 1.5kg is moving at 25m/s and strikes a second ball with a mass of 2.3 kg that is motionless. Find the velocity of the second bal

I need help with question 1 a and b

Where are the zeros of the function f(x)=x2 +8x+4 expresses in simplest form

what should you do when someone takes things and hoards them?

What are quadratic equations??