4-10 Radical Application problems

Applying radicals to real life

• Used to show the relationship between two objects or things in real life

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Solving this problem

• First, you must set t=1 
• Then, you multiply 1 and 1/4 by 4 to get rid of the fraction
• Next, you square everything to get rid of the square root 
• 4 will turn into 16=25-h so you subtract 25 from both sides giving you -9
• Finally you multiply everything by -1 making the answer h=9         

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solving this problem

• r=(3v/4pi)^1/3
• All you do is plug in each of the numbers given, as v
• r=(3(413)/4pi))^1/3   and  r=(3(455)/4pi))^1/3
• When v=413, r=4.62
• When v=455, r=4.77

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solving this problem

• The standard deviation is 15 so 15=the square root of v
• You must get rid of the square root so square both sides
• After doing this, you get the answer, v=225