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

A sweater costs $12 more than twice the cost of a skirt. The sweater costs $38. Write an equation to find the cost of the skirt. Use s to represent the cost

558/2439 is a rational number. How would you convert it to a decimal? 558 × 2,439 558 ÷ 2,439 2,439 ÷ 558 2,439 × 558

How would one best characterize Japan's political situation during the 1400s and 1500s?

Colin invests £1200 into his bank account. He receives 10% per year simple interest. How much will Colin have after 3 years? Give your answer to the nearest pen

i will give brainlistA vertical wall 1.6 m high is on horizontal ground.A ladder of length 2.5 m rests against the wall.The ladder rests on the ground 0.7 m fro

what's your biggest goal

Sources of finance There is words that you can choose

How to make a picture book

Jimmy drew the number lines below showing tenths and hundredths. What decimals do the points on the number lines show? Choose the decimals from the box to label

LC3 Programming ProblemUse .BLKW to set up an array of 10 values, starting at memory location x4000, as in lab 4.Now programmatically populate the array with th