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

Tutors Answer Your Questions about Radicals (FREE)

Question 134559: Solve the equation w=Cr-2 for r where C is a constant and r is the distance that the object is from the center of the earth.
Click here to see answer by vleith(2983)

Question 134661: sqrt6(4sqrt6-3sqrt2)Please help!
Click here to see answer by stanbon(75887)

Question 134654: How would you express this radical in simplified form?
the square root of 4/25x^3
Click here to see answer by stanbon(75887)

Question 134653: Please tell me how you would express this radical in simplified form:
the square root of 72x^2
Click here to see answer by stanbon(75887)

Question 134652: Please help me simplify this expression:
the square root of x^2
Click here to see answer by edjones(8007)

Question 134716: I am having so much trouble with this question. I will show you the original question and then will show what I have. Please complete the problem for me from start to finish so that I am no longer as confused as I am now. This is what I have:
(3x)^-1/3=
3^-1/3 * x^-1/3=
1/3^1/3 * 1/x^-1/3=
3^1/3= 3cubert3=
1/3cubert3x
I am not allowed to leave radicals in the denominator, I am completely confused, can you please solve the original? The original problem again is (3x)^-1/3

Click here to see answer by stanbon(75887)

Question 134586: (square root 2 + 5)^2
Click here to see answer by vleith(2983)

Question 134578:
2 radical 63 - 6 radical 28 + 8 radical 45
Click here to see answer by checkley77(12844)

Question 134864: simplify: 3 radical x^4y^5 times radical xy
Click here to see answer by nycsharkman(136)

Question 134863: add and simplify:

radical x^5y^2 + radical 36xy^4
Click here to see answer by checkley77(12844)

Question 134903: 1. Find the distance between M(2, -1) and N(-4, 3) to the nearest tenth.
2. Find the distance between P(-2.5, 3.5) and R(-7.5, 8.5) to the nearest tenth.

Click here to see answer by nycsharkman(136)

Question 134862: multiply and simplify:
(
4 - 3 radical 2) (5 + 2 radical 2)

Click here to see answer by checkley77(12844)

Question 135223: Mutiply and simplify:
(4-3 square root 2) (5+2 square root 2)
Click here to see answer by stanbon(75887)

Question 135225: One leg of an isosceles right triangle measures 12 feet. Find the exact length of the hypotenuse.
Click here to see answer by stanbon(75887)

Question 135224: Rationalize the denominator:
8 - radical 2 divided by 6 - 3 square root 2
Click here to see answer by solver91311(24713)

Question 135290: This is the question I'm having problems with...
Suppose P dollars in principal is invested in an account that earns interest annually. If after t years the investment grows to A dollars, then the annual rate of return, r, on the investment is given by
r = A/P^1/t -1
Find the annual rate of return on $7,000 which grew to $12,200 after 5 years.
Round your answer to one decimal place.
I filled in the equation with:
r= 12200/7000^1/5 -1
I cancelled out the zeros to get r=122/70^1/5 -1
I'm unsure where to go from here. Thanks.
Click here to see answer by vleith(2983)

Question 135302: Please show me how to solve this equation. w= Cr-2 for r. C is the constant and r is the distance that the object is from the center of the earth. 100 pounds when at sea level 3,963 miles from the center of the earth. this is not from a textbook it was an appendix assignment from intermidiate algebra class 117.
Click here to see answer by vleith(2983)

Question 135222: simplify:

3 square root b^2 divided by 4 square root b^3
Click here to see answer by checkley77(12844)

Question 135402: multiply (6+2i)^2
Click here to see answer by stanbon(75887)

Question 135401: multiply:
square root -144 times square root -49
a.84i
b.-84
c.84
d.-84i
Click here to see answer by stanbon(75887)

Question 135400: express in terms of i and simplify: square root -243
Click here to see answer by stanbon(75887)

Question 135398: Find one of the solution of x= square root 3x-12 + 4
Click here to see answer by ankor@dixie-net.com(22740)

Question 135422: Tutor: How do Isubtract and simplify 5 square root of 20 minus 2 square root of 125?
Click here to see answer by nycsharkman(136)

Question 135422: Tutor: How do Isubtract and simplify 5 square root of 20 minus 2 square root of 125?
Click here to see answer by Earlsdon(6294)

Question 135421: Tutor: How do I rationalize the denominator for 6 divided by 2 plus the square root of 3?
Click here to see answer by Earlsdon(6294)

Question 135420: Tutor Could you help me please convert this problem to radical notation..Thank you!
7 square root 18^3
Click here to see answer by Earlsdon(6294)

Question 135419: Tutor Could you help me please convert this problem to radical notation..Thank you!
y1/4
Click here to see answer by stanbon(75887)

Question 135469: subtract : (9-6i) - (-7i-5)
Click here to see answer by checkley77(12844)

Question 135469: subtract : (9-6i) - (-7i-5)
Click here to see answer by stanbon(75887)

Question 135468: simplify:

3 square root b^2 divided by 4 square root b^3

a. 1 over 12 square root b
b. 12 square root b^5
c. 7 square root b^5
d. 12 square root b
Click here to see answer by checkley77(12844)

Question 135574: I got this far and got confused could you help me with this please..thank you
4.2*10^6/7*10^8
(4.2*10^(-6)=0000.042
(7*10^8)is 70,000,000
(4.2*10^(-6)/0.7*10^8
(4.2)*/(0.7)*10^-6+8
0.6=10^

Click here to see answer by Earlsdon(6294)

Question 135563: How would you perform the indicated operation?
8 over the square root of 80-3 over the square root of 45
Click here to see answer by edjones(8007)

Question 135560: Please help me solve this equation:
the square root of 7a+1=a+1
Click here to see answer by edjones(8007)

Question 135559: Please help me solve this equation:
the square root of 8x+9=5
Click here to see answer by tomc(2)

Question 135611: I'm having a little trouble with this question. I can't find anything in our book that looks anything like it. The instructions are: "solve each equation, inequality or system of equations"
square root x-1=x-1
I tried this
x-1=(x-1)^2 Remove the square root form the left side and square the right.
-x^2+x-1+1^2=0 Set the equation to zero and cancell -1 and +1^2
x^2-x=0
There doesn't seem to be a solution.
Am I even approaching this correctly?
Click here to see answer by ankor@dixie-net.com(22740)

Question 135615: multiply
(6+2i)^2
Click here to see answer by solver91311(24713)

Question 135614: simplify:
i^51
Click here to see answer by solver91311(24713)

Question 135613: divide:
4-2i over 3+5i
Click here to see answer by solver91311(24713)

Question 135628: The fifth root of 32x^5 divided by y^15
Click here to see answer by checkley77(12844)

Question 135695: Please help me solve this equation:
(3-squareroot5)^2
Click here to see answer by vleith(2983)

Question 135697: Please help me solve this equation:
squareroot2x-3 -3=0
Click here to see answer by vleith(2983)

Question 135702: Simplify the expression:

2 Square root of 10/2
Click here to see answer by vleith(2983)

Question 135706: Please help me with this problem:
2squareroot8-3squareroot50
Click here to see answer by vleith(2983)

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