Estimating Square Roots

Estimating Square Roots

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What is the solutions for

 $\sqrt{\frac{9}{25}}$  

(please type in the answer)

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Now you try:

What is the solution:

 $\sqrt{\frac{25}{100}}$  

Make sure your answer is in simplest form :)

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What is the solution for

 $\sqrt{-16}$  
please type in the answer

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Now you try:

Find the solution:

 $\sqrt{-49}$  

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 $t^2=121$  
 $t=\sqrt{121}$  
 $t=11$  

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 $You\ try:\ \ \ \ \ \ k^2=196$