Questions on Algebra: Radicals -- complicated equations involving roots answered by real tutors!

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Question 571247: Solve the equation for r. h= Vr^-2/3.14 I think I might have this figured out, but I'm not certain it is correct. Here is the final answer I got. r=(1/pie symbol*h)/V. All raised to the power of 2
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Question 571248: Suppose that a cylinder has a volume of 314 in^3 and a radius of 5 in. Find the height of the cylinder. Use pie symbol = 3.14. Here is the given equation,h= Vr^-2/3.14 I know we plug in 314in^3 for V and 5 for r, so h=3.14^3(5^-2)/3.14 The exponents are throwing me off with this equation....Please help me understand this, it is due today. Thank you
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Question 571201: simplify. radicand sign 3 sqrt 729x^5 over y^3
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Question 570944: what is the simplify radical of 686
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Question 570947: what is the simplify radical of 686
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Question 570873: How do you solve ^16 sqrt -7^16?
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Question 570752: hi, i need help on solving the problem, x . i don't understand on how to solve this problem... it would be great if you can help me thank you
Click here to see answer by mananth(10539)

Question 569540: How do uSimplify (5x+4)-(6x+2)?

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Question 569543: Which is the better buy? 16oz bottle of lotion for $2.39
or
24oz bottle of lotion for $3.24?
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Question 569282: solve the following radical equation:
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Question 569284: solve the following radical:
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Question 569285: between which two consecutive integers is the cube root is 11
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Question 568723: 4th root of 8 times the 4th root of 16 divided by the 8th root of 2 times the 8th root of 3
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Question 568317: g(x) = sqrt( -x) I know that that is an imaginary number. I understand that when y = 3, then x = -9. When y = 2, then x = -4, when y = 1, then x = -1. But what is the algebraic process to get those neg x values?
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Question 567803: How does 5 times the fourth root of r cubed divided by the square root of r simplify to 5 times the fourth root of r?
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Question 567489: square root of y+8 minus square root of y-6 equals -3, Help!
I have tried isolating one of the radicals and raising both sides to the power of the index, then isolating the radical again, but webassign isnt taking my answer! I come up with 6 25/36.
Click here to see answer by ankor@dixie-net.com(12681)

Question 567403: simplify the following.
i^11 (24/4i^5)

i know that i^11= i but as far as the steps to take in order to simplify the equation I get lost.
Click here to see answer by Alan3354(21550)

Question 567319: 7n^2=-4n...........I don't understand how to get the answer. My professor says to solve by using any method..i'm just not sure which method to use and how to use it correctly
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Question 566930: Please help me solve this equation:.
what i have tried is squaring both sides to where i get
the i subtracted the
the answer i got was but my teacher said it was wrong
he has said the correct answer is what did i do wrong?
Click here to see answer by richard1234(4789)

Question 566853: 1. (-3squareroot of 5)times(4squareroot of 15)
2. (216^2/3)
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Question 566752: (√a)(√b)=√(ab) i an believing this to be true using the product rule
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Question 566232: Explain the difference between rationalizing the denominator in an algebraic expression whose denominator has only one term involving a radical and one whose denominatror has two terms, at least one of which involves a radical.
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Question 565594: Simplify the following expression. Express in terms of i. show work please.
sqrt -112
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Question 565578: What is the answer to √16 + 3√8 ? Please show the work so i will know how to do any other problem similar to this one on my own. Thank You for your time!
Click here to see answer by ankor@dixie-net.com(12681)

Question 565238: How would you simplify 2 yds over 16 ft?
Click here to see answer by rfer(10417)

Question 564678: I am really struggling with these... Please help.
Multiply:
(9-√5)(3+√5)
Multiply and simplify by factoring.
³√y^7 ³√16y^8
Click here to see answer by mananth(10539)

Question 564678: I am really struggling with these... Please help.
Multiply:
(9-√5)(3+√5)
Multiply and simplify by factoring.
³√y^7 ³√16y^8
Click here to see answer by stanbon(48502)

Question 564246: Simplify. Remember to use absolute-value notation when necessary. If a root cannot be simplified, state this.
sqrt((a+3)^2)
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Question 564026: sqrt(1240/c)=3963. I need to solve this equation for c and am having an impossible time trying to figure this equation out because every number i get does not plug into original equation and make it true.
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Question 563798: solve:

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Question 563838: Simplify the following expression.

sqrt-104 sqrt-8
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Question 563437: Simplify. Remember to use absolute - value notation when necessary. If a root can not be simplified, state this.Show your work. Please help with this problem as soon as possible.Thanks!
sqrt (a+b)^2
Click here to see answer by jim_thompson5910(21667)

Question 562751: How do you simplify √(1/(3x^3 y))?
I know it is x^2 outside the radical with y and x inside the radical but I'm not sure what to do with the 1/3.
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Question 561929: 5 square root (32) + 7 square root (50) how do I do this?
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Question 561678: simplify the expression sqrt50 + 12 sqrt8= The answer is supposed to be 34 sqrt2 but I keep getting 29 sqrt 2?

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Question 561329: sqrt(x-6)+3=sqrt(x)
does this have a real solution?
first i subtracted the 3 over, squared both sides and ended up with x=(25/4) but when i plug that in, it was not a true statement.
then i started over and squared both sides like the original problem shows and got the square root equal to a negative so that would be "no real solution".
thank you for looking at this!!
Click here to see answer by scott8148(5879)

Question 561113: what is 48x^11y^16 under the radical?
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Question 560847: i am having a hard time find the square root of 63/8. can you helP?
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Question 560654: Solve:

---
Final Answer is 20
Show steps.
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Question 560344: Please help me solve this equation:
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Question 560292: easiest way to find square root&cube root

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Question 560169: w=Cr to the power of -2
c is the constant and r is the distance that the object is from the center of the earth.
object weighs 100 pounds. find value of C that makes the equation true

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Question 559939: This radical has me stumped. I have gotten two different answers.
3-2radicand symbol 3 + 5 radicand symbol 3. These are my answers.1)3*radicand symbol 3+3 2)3 + 3 radicand symbol 3. Please show steps.
Click here to see answer by ankor@dixie-net.com(12681)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930