Tutors Answer Your Questions about Radicals (FREE)
Question 91637: a problem on a take home test cube root of 125-xcubed =5-x do i first cube both sides to get rid of the radical or should i solve the radical on the left side if i cube both sides i get 125- 5x to the 3 power. if take the cube root of the left side i get 5i times square root of 5 =5-x ihave no idea what to do please help thank you very much!
Click here to see answer by bucky(1732)   |
Question 91636: a problem on a take home test cube root of 125-xcubed =5-x do i first cube both sides to get rid of the radical or should i solve the radical on the left side if i cube both sides i get 125- 5x to the 3 power. if take the cube root of the left side i get 5ixsquare root of 5 =5-x ihave no idea what to do please help thank you very much!
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 93109: simplify:
square root of 20 + the square root of 80 - the square root of 125
I got to this point:
(2 square root of 5) + (4 square root of 5) - (5 square root of 5) but I don't remember what to do next. Thanks so much!!
Click here to see answer by tutorcecilia(2042) |
Question 93983: i think this is the right subject, but i am not sure. if you could help me anyway, that would be awesome. i really hope so, thank you so much. it says rationalize the following...
(/x)+2
-------
(/x)-1
(p.s.(/x) means the square root of x) thank you so much!
Click here to see answer by jim_thompson5910(13794) |
Question 94797: the equation d=1.2 square root h, gives the distance, D, in miles that a person can see to the horizon from a height ,h, in feet.
A. solve equation for h,
B. a national park peak is 14,255 feet in elevation. How far can you see to the horizon from the top of peak.
I am lost on how to solve the equation and then figure out the steps to take to come up with the answer for B.
Click here to see answer by ankor@dixie-net.com(6693) |
Question 95525: Hello!
I have tried working this problem but when I checked my answer it did not work with the problem. Here is the problem:
Solve the following equations algebraically:
sqrt(2x+3)-sqrt(x+7)=1
Here is my work:
I squared both sides to give me
2x+3-x+7=1
Next I added like terms to get x+10=1
I brought over the 1 to give me x=9
I must be doing something wrong. Any help will be appreicated.
Click here to see answer by stanbon(26283) |
Question 95724: I am a bit confused on evaluating a problem with a radical in it:
2^3-[10+4 sqrt[25-9]]+30-17
I'm not sure about how to handle(((10+4 sqrt 25-9)))
Do I subtract 9 from 25 then find the sqrt? and I'm not sure what function after the 10+4
Click here to see answer by stanbon(26283) |
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