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

during photosynthesis, cells capture the energy of sunlight using

A rocket is launched upward with a velocity of 96 feet per second from the top of a 40 foot stage. What is the maximum height attained by the rocket?

The form of the conversion factor that is used is the one in which the unit of the _____ is in the denominator.

8) Damiya has $20 for lunch. She bought lunch 3 times last week and twice this week. She now only has $7.50 left. How much did each lunch cost? Write an equatio

if [2+3] [1+x]=25 what is x?

show how to solve 2x+5=13, justify the steps

what is the watery environment that the dna and ribosomes float in

The taxi charges $3 just for the pickup and then an additional $1.75 per mile driven. How much would a taxi ride cost if Stella is riding for 2 miles? How much

Which of the following expressions is the prime factorization of 120?

A certain light was beginning to dawn dimly within her,â€”the light which, showing the way, forbids it. At that early period it served but to bewilder her. It