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

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Question 322141: Can someone please help me to sove this. I have tried,and I can not figure out what I am doing wrong. Please help.
2sqrt(3x^(2)-2)=10
Click here to see answer by Fombitz(32388)

Question 322184: Please help me with this problem. Thank you.
Solve: sqrt(x-5) = x-7
Click here to see answer by Jk22(389)

Question 322252: solve the radical equation. Please show work. sqrt(20-8x) = x
Click here to see answer by Fombitz(32388)

Question 322342: (3a^2)^1/2*(3^2a)^3/2
I know the answer is 3^7/3 9^5/2 but I just don't know how it was acheived.
Click here to see answer by Fombitz(32388)

Question 322355: X=(31 over 6)^3/2 * $1,000,000
Click here to see answer by checkley77(12844)

Question 322384: ~3/1+~2
The answer is suspose to be ~6-~3 but the way I have the problem figured I only get the ~3
Click here to see answer by Fombitz(32388)

Question 322380: ~3/1+~2 * 1-~2/1-~2=
I have this
~3/1+~2*1
~3/1+~2*1-~2/1-~2
~3(1-~2)/(1)^2-(~2)^2
~3(1-~2)/1-(2)
-~3/1-(2)
-~3/1-2
-~3/-1
-(-~3/1)
~3
But the answer is suspose to be ~6-~3
So somewhere I messed up. Please help.
Thanks
Click here to see answer by Fombitz(32388)

Question 322497: cubed root of x+2=2
Click here to see answer by checkley77(12844)

Question 322433: Find the Following.
18 square root of (-9)^18
Simplify, unless the answer is Not a real number.
Thank you
Click here to see answer by checkley77(12844)

Question 322639: Can you help me Rationalize the denominator
6/ square root of 12
thanks!

Click here to see answer by stanbon(75887)

Question 322639: Can you help me Rationalize the denominator
6/ square root of 12
thanks!

Click here to see answer by jessica43(140)

Question 322639: Can you help me Rationalize the denominator
6/ square root of 12
thanks!

Click here to see answer by QH(50)

Question 322656: How do you find the slope of the line defined by the given condition of perpendicular to x=3y? I know the answer is -3 I just don't know hoe to get to it.

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Question 322757: (square root of 7+square root of 10)Times(Square root of 7-square root of 10
Click here to see answer by Fombitz(32388)

Question 322773: i am not good with htis stuff do you think a tutor can come help me
Click here to see answer by solver91311(24713)

Question 322778: Multiply and Simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers.
3 square root of y^10 next to 3 square root of 16y^11
Simplify and answer in radical form.
Thanks!!
Click here to see answer by QH(50)

Question 322952: Subtract. Simplify by collecting like radical terms if possible.
5 square root of 18 - 7 square root of 2 =
Simpify and use radicals as needed.
Thanks for your help.
Click here to see answer by ankor@dixie-net.com(22740)

Question 323020: Please help me with this problem. 2(sqrt(128) - sqrt(18) + (4)sqrt(32). Thank you.
Click here to see answer by stanbon(75887)

Question 322954: Simplify by taking the roots of the numerator and denominator.
Assume that all expressions under radicals represent positive numbers.
3 square root of 1000x^14 / y^3
Use radicals as needed and state if it is NOT a real number.
thank you for your help.
Click here to see answer by Fombitz(32388)

Question 323024: Could you help me please with this problem? Thank you. (9)sqrt(50)- (4) sqrt(2).
Click here to see answer by QH(50)

Question 323084: ((sqrt 11 - sqrt 7)/(sqrt 11 + sqrt 7))Solve
Click here to see answer by stanbon(75887)

Question 323084: ((sqrt 11 - sqrt 7)/(sqrt 11 + sqrt 7))Solve
Click here to see answer by rapaljer(4671)

Question 323084: ((sqrt 11 - sqrt 7)/(sqrt 11 + sqrt 7))Solve
Click here to see answer by Fombitz(32388)

Question 323244: What is an example with explanation of a radical equation?
Click here to see answer by rapaljer(4671)

Question 323480: How do you write in simplest radical form?
Click here to see answer by Edwin McCravy(20054)

Question 323570: What root property is essential to solve any radical equation involving square roots?
Click here to see answer by jim_thompson5910(35256)

Question 323705: Darla is building a new desk. To make sure she had made a square corner, she measures 4 ft. from the corner along one edge and 9 ft. from the corner along the other edge. How long should the diagonal be between those two points if the corner is a right angle? Diagonal = how many feet?
Click here to see answer by stanbon(75887)

Question 323700: Please help me with this. At a height of h meters, you can see V kilometers to the horizon. These numbers are related by the equation V=3.5sqrt(h). A person can see 392 km from the horizon of an airplane window. How high is the airplance? The airplane is how many meters high? Simplify answer. Type an integer of fraction. Thank you.
Click here to see answer by stanbon(75887)

Question 323704: How long is a guy wire reaching from the top of a 21-ft pole to a point on the ground 14 feet from the pole? What is the exact length in feet?
Click here to see answer by Fombitz(32388)

Question 323721: What does it mean to refer to a 20-in TV set or a 25-in TV set? Such units refer to the diagonal of the screen. A 30-in TV set also has a width of 24 inches. What is its height? The height of a 30in TV set is how many inches?
Click here to see answer by josmiceli(19441)

Question 323822: Simplify. Do not use negative exponents in your answer. 5^10 * 5^-2
Click here to see answer by jim_thompson5910(35256)

Question 324174: solving the equation with radicals
w=square root 2w+15
Click here to see answer by checkley77(12844)

Question 324178: i^2 is then (-1)
1. what is i^3?
2. what is (i-1)(i+1)?
3. what is i^4?
4. What is i^n is n is an even number? and if n is an odd number?
Click here to see answer by Alan3354(69443)

Question 324344: Solve. √(3y+2)=7
Click here to see answer by Fombitz(32388)

Question 324347: Multiply and simplify by factoring. Assume that all expressions under radical represents nonnegative numbers. ∛(y^10) ∛(81y^11)

Click here to see answer by stanbon(75887)

Question 324416: 1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on Earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: w = Cr^(-2), where C is a constant, and r is the distance that the object is from the center of Earth.
(a) Solve the equation for r.
(b) Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963 miles from the center of the Earth.)
(c) Use the value of C you found in the previous question to determine how much the object would weigh in:
I. Death Valley (282 feet below sea level).
II. the top of Mount McKinley (20,320 feet above sea level).
2. The equation D = 1.2√h gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet.
(a) Solve this equation for h.
(b) Long�s Peak in Rocky Mountain National Park, is 14,255 feet in elevation. How far can you see to the horizon from the top of Long�s Peak? Can you see Cheyenne, Wyoming (about 89 miles away)? Explain your answer
Click here to see answer by solver91311(24713)

Question 324447: Solve for the r in the equation w=Cr^-2. To is the negative power the equation is raised to. then if an object is 100 pnds at sea level. find the value of C that makes the equation true. Sea level is 3,963 miles from the center of the Earth. Use the value of C to answer a place at 282 feet below sea level. and one at 20,320 above sea level. Please show me how to find these answers.
Click here to see answer by solver91311(24713)

Question 324453: solve for the value of h in D=1.2h and h is inside of the square symbol. Also how far can you see at a distance of 14,255 in elevation.
Click here to see answer by nyc_function(2741)

Question 324333: Add. simplify by collecting like radical terms if possible, assuming that all expressions under radicals represent nonnegative numbers. √7a+ 2√(175a^3)
Click here to see answer by nyc_function(2741)

Question 324565: factoring in binomials
Click here to see answer by jim_thompson5910(35256)

Question 324506: 9 3/2 simplify
a=7 b=9 c=?? Value=???

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Question 324176: solving an equation with radicals solve for z where z is a real number

Click here to see answer by JBarnum(2146)

Question 325218: multiply. Simplify wherever possible (√7-√8)(√7+√8)

Click here to see answer by jim_thompson5910(35256)

Question 325219: Simplify by taking roots of the numerator and the denominator ∛(512/125)
Click here to see answer by jim_thompson5910(35256)

Question 325223: find the following. Assume that x can represent any real number. Use absolute value notation when necessary. √(x^2-12x+36)=
Click here to see answer by jim_thompson5910(35256)

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