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

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Question 81551: The constant is always equal to the initial height of the ball (80 m in our previous exercises). Now, let�s have you develop a height equation. A ball is thrown upward from the roof of a building 100 m tall with an initial velocity
of 20 m/s.
When will the ball reach a height of 80 m?
thanks
Click here to see answer by renevencer22(21)

Question 81697: Geometry. The length of a rectangle is 1 cm longer than its width. If the diagonal of the rectangle is 4 cm, what are the dimensions (the length and the width) of the rectangle?
THANK YOU!
Click here to see answer by ankor@dixie-net.com(22740)

Question 81825: Rewrite without rational exponents and simplify if possible: 32^4/5
Click here to see answer by stanbon(75887)

Question 81841: Simplify; 3sqrt(-1/125)
Click here to see answer by ptaylor(2198)

Question 81362: will someone help me factor this completely?
5x^2-2xy+5x-2y
Click here to see answer by vertciel(183)

Question 81998: Simplify.
32+√80 / 4
I came up with 8 + √80

Click here to see answer by jim_thompson5910(35256)

Question 81985: Can someone show me how to do this?
Determine whether -4√16 is rational or irrational.

Click here to see answer by checkley75(3666)

Question 81982: Can someone show me how to do this?
Evaluate 3√1/64 , if possible.

Click here to see answer by checkley75(3666)

Question 82073: I need to know how these two can be solved.
1.((p^-6)(q^2))^7/6

2. square root of 2 plus 5/square root of 3 minus 8

Click here to see answer by blizz86(3)

Question 82065: the square root of 72 plus the square root of 50 minus the square root of 8
Click here to see answer by checkley75(3666)

Question 82065: the square root of 72 plus the square root of 50 minus the square root of 8
Click here to see answer by jayanthihemkos@yahoo.com(87)

Question 82064: 9 times the square root of 6a minus 11 times the square root of 6a plus 4 times the square root of 6a
Click here to see answer by checkley75(3666)

Question 82063: the square root of 1/6
Click here to see answer by checkley75(3666)

Question 82032: 1 squared + the square root of 3 squared
Click here to see answer by tutorcecilia(2152)

Question 82185: Use a calculator to approximate √70 to the nearest hundredth.
When I do this I get 8.3666 or 8.37?
But the choices I have are 7.66, 7.81, 8.04 and 8.16 ? What am I doing wrong?
Click here to see answer by vertciel(183)

Question 82183: Can I get someone to show me how to do this Please?
Simplify. Assume x represents a positive number.
√18x^4

Click here to see answer by vertciel(183)

Question 82256: How do i work this?

10 square root of 2 divided by square root of 8
Click here to see answer by tutorcecilia(2152)

Question 82245: How do I do problems like this?
Solve.
√y+16=1
Please help me?

Click here to see answer by stanbon(75887)

Question 82244: How do I do problems like this?
Evaluate -3√64 , if possible.
It has multiple choice answers.
�4
�8
-64/3
Not a real number
The first couple of times I did it I got different answers. Please help me?

Click here to see answer by stanbon(75887)

Question 82239: I am having problems with this one I come up with different answers. I have submitted this once before and I was given a totally different answer than even I got or what is in the book.
Evaluate √-100 , if possible.
The book gives me these for possible answers.
8
�8
�32
Not a real number

Click here to see answer by Earlsdon(6294)

Question 82237: Which two expressions are equivalent?
√-49, -7, -√49
By my calculations which are not always so good I came up with these two as equivalent √-49, -7.

Click here to see answer by Earlsdon(6294)

Question 82298: what is the square root of 81a^2b^4
Click here to see answer by shrty1351(6)

Question 82323: How do I determine this?
Determine whether √49/100 is rational or irrational.

Click here to see answer by checkley75(3666)

Question 82325: How do I do this?
Find the distance between (8, 0) and (�2, 0).

Click here to see answer by checkley75(3666)

Question 82332: How do I do the ones with multiplication?
Simplify.
√5* √2

Click here to see answer by checkley75(3666)

Question 82336: Can someone show me how to do this with a calculator?
Use a calculator to approximate 8√5+8√3 to the nearest hundredth.
8√5+8√3

Click here to see answer by checkley75(3666)

Question 82334: I have to evaluate this. What do I do?
Evaluate 4√81 , if possible.

Click here to see answer by checkley75(3666)

Question 82329: I need some help with this one. Please help?
Simplify.
8√2- 3√2

Click here to see answer by checkley75(3666)

Question 82328: I am having trouble with this one. please help?
Evaluate √9/16 , if possible.

Click here to see answer by checkley75(3666)

Question 82335: What do I do for problems like this one?
Simplify.
√75a^2/ √5

Click here to see answer by vertciel(183)

Question 81986: Can someone show me how to do this?
Simplify. Assume x represents a positive number.

√18x^4

Click here to see answer by vertciel(183)

Question 82350: how do you solve this equation by completing the sqaure?
Click here to see answer by stanbon(75887)

Question 82350: how do you solve this equation by completing the sqaure?
Click here to see answer by scott8148(6628)

Question 82326: How do I do this?
Evaluate 3√-8, if possible.
this is a small 3: 3√-8
Does that mean cubed?
Click here to see answer by Earlsdon(6294)

Question 82327: Simplify.
(2x√2x)(3√5x)
I came up with 6x^2√10 am I right?
Click here to see answer by stanbon(75887)

Question 82351: how do you simplify this problem?
Click here to see answer by stanbon(75887)

Question 82489: Okay I did this one and I am not sure if I am right. Please check?
Simplify.
√50-√2
√50-√2=5.65685/2=2.828

Click here to see answer by stanbon(75887)

Question 82491: Okay I did this one and I am not sure if I am right. Please check?
Simplify.
√1/3
√1/3=0.577/2=0.288675

Click here to see answer by stanbon(75887)

Question 82529: Please help me find the value of x:

Click here to see answer by praseenakos@yahoo.com(507)

Question 82538: Please help me solve the following equation.
The volume of a cube is given by V = s�. Find the length of a side of a cube if the Volume is 729 cm�.
thank you for your assistance.
Click here to see answer by chitra(359)

Question 82530: Please help me simplify this:

Click here to see answer by ptaylor(2198)

Question 82463: Hello, this question isn't from a book. It is a paper assignment. Please help I am confused with this.
Is the square root symbol with an x^2 power under it=x an identity (true for all values of x)? Sorry I wasn't sure how to put the square root symbol in. I hope you can understand what I am asking. If at all possible to help me before Saturday by 8:00 pm central time I would really appreciate it. Thank you.
Click here to see answer by 303795(602)

Question 82537: Please assist me is solving the following equation.
Suppose you travel north for 35 kilometers then travel east 65 kilometers. How far are you from your starting point? North and east can be considered the directions of the y- and x-axis respectively. Round to the tenth's place.
Thank you for your help...
Click here to see answer by 303795(602)

Question 82536: Please help me with the following problem.
A right triangle is a triangle with one angle measuring 90�. In a right triangle, the lengths of the sides are related by the Pythagorean Theorem, c�= a�+ b� where c is the length of the hypotenuse (the side opposite the 90� angle). Find the length of the hypotenuse when the other two sides� measurements are 3 feet and 4 feet.
thank you for your assistance.
Click here to see answer by 303795(602)

Question 82584: I have to simplify this problem please help. Can anybody show me how to do equations like this one? The ones with letters and that are on top of each other are really hard.
√75a / √5
Click here to see answer by tutorcecilia(2152)

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