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

Help pleeeeeeeeeaaaaaaseee

An electromagnetic wave has an electric field with a peak value of 250 n/c. what is the average intensity of the wave?

What kind of verbal does the following sentence contain: Writing gives Ethan tremendous peace of mind. A. present participle B. infinitive C. past participle D.

Which sentences in the passage best show the author’s belief that Plymouth Colony’s fate was guided by divine Providence? A. And of these in the time of most d

When performers encounter the phrase, da capo, they?

which is the correct one

hailey began reading her book at 9:55am. she read for 1 hour 35 mins. she spent 45 mins. doing homework what time did she finish her homework?

How did the map of europe differ after the treaty of versailles? apex?

which fraction is larger 7/16 or 51/100?

Which equation has the solutions x = (5 +- 2 \sqrt(7))/(3)?A: 3x2 – 5x + 7 = 0B: 3x2 – 5x – 1 = 0C: 3x2 – 10x + 6 = 0D: 3x2 – 10x – 1 = 0