Questions on Algebra: Square root, cubic root, N-th root answered by real tutors!

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Algebra: Square root, cubic root, N-th root

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Question 191208: Draw a right triangle. Label the vertical height as 12cm and the hypotenuse 20cm. Solve for the base x to the nearest 3 digit decimal answer. 20^2=x^2+12^2.
The answer I come up with is 16.0
Click here to see answer by solver91311(5072)

Question 191231: 9x^2-12x+4=0
Click here to see answer by nerdybill(2448)

Question 191239This question is from textbook Structure and Method Book 1

: 3 SQ. ROOT OF 8 + 2 SQ. ROOT OF 16This question is from textbook Structure and Method Book 1

Click here to see answer by kara!(17)

Question 191319: Find the value of X and Y thats sloves both systems:
5√X - 2√y = 4√2
2√X + 3√y = 13√2
Click here to see answer by solver91311(5072)

Question 191442: Please help!
4th sqrt of 48 plus 4th sqrt of 3 equals what?
Click here to see answer by ankor@dixie-net.com(6693)

Question 191528This question is from textbook Structure and Method Book 1

: sq. root of 3/5
sq. root of 3 13/3
sq. root of 3{2}+5{2}
sq. root of m^2/n^3
sq. root of 2+2/49
sq. root of (2-3) sq. root of (2+3)
sq. root of (3-5) sq. root of (3-5)This question is from textbook Structure and Method Book 1

Click here to see answer by checkley75(3666)

Question 191863: I'd like to know how to simplify the following:
I'm not sure if I should eliminate the square root by putting parentheses around the entire expression and cubing it, or if I should pull x to the 5th out, leaving the problem as x to the 5th * the 3rd sqrt of 80x squared. And the same problem with the denominator...do I pull out z squared, leaving me with z squared * the 3rd sqrt of 9y. Or do I go with my first instinct and cube everything...leaving me with 512,000 x to the 51st/729 y3z18? Yikes. Any help would be greatly appreciated. Thanks in advance!
Click here to see answer by Alan3354(6097)

Question 191870: I have a couple of problems that I need help with.
1) Solve using the square root property:
5x^2 = 100
2) Solve using the square root property:
(x + 8)^2 = 81
Click here to see answer by Alan3354(6097)

Question 191878: Please help me solve this problem:
There is the square root symbol and underneath it is this (a+1)^2 assistance is greatly appricated!!!
Click here to see answer by user_dude2008(716)

Question 191899: Simplify √ (32x5y2) that is sqrt (32x5y2)
Click here to see answer by Mathtut(3670)

Question 191899: Simplify √ (32x5y2) that is sqrt (32x5y2)
Click here to see answer by jim_thompson5910(13794)

Question 191973: Please help me solve this equation:
Simplify the following:
√10x * √8x
Click here to see answer by jim_thompson5910(13794)

Question 191984: Hi, I'm not sure if I did it right. Could you correct me if I did it wrong?
problem:
√24x^4
---------
√3x
= √8x^2 = √4x^2√2 = √4√X^2√2 = 2√2
thanks
Click here to see answer by Alan3354(6097)

Question 192118This question is from textbook Structure and Method Book 1

: Sq.root of 3)(2)+ sq. root of 50This question is from textbook Structure and Method Book 1

Click here to see answer by RAY100(1637)

Question 192166: Cube Root 3/54
Cube Root 3/162
Cube Root 81x5y6z8/54
Click here to see answer by edjones(3298)

Question 192723: One common use of positive and negative exponents is in writing numbers as scientific notation. For example 0.000052 can be written as 5.2 × 10-5. A) Use scientific notation and the laws of exponents to evaluate (0.000048)(0.0000035)(0.00014). Leave your answer in scientific notation. B) If a space probe travels at 100 kilometers per second for 12 years, how far will it travel? Write your answer in scientific notation. (Assume 1 year = 365 days)
Scientific Notation: A number is expressed in scientific notation when it is in the form
a × 10n
where a is greater than or equal to 1 but less than 10 and n is an integer.

Click here to see answer by stanbon(26297)

Question 192720: The area of a circle is 28 square meters. What is its circumference?
Click here to see answer by stanbon(26297)

Question 192722: A concrete driveway measures 16 yards by 6 yards. The driveway will be 0.25 yards thick. (a) How many cubic yards of concrete will be needed? (b) How much will it cost if concrete is $5.25 per cubic yard?
Click here to see answer by nerdybill(2448)

Question 192783: Square the binomial
-(3x-3) exponent is 2
Click here to see answer by Mathtut(3670)

Question 192782: Square the binomial
(8x-4) exponent is 2
Click here to see answer by Mathtut(3670)

Question 193070: Please help me. I do not understand the exponent fully and how to solve and simplify this.
I could use any help in this . Thank you so much!! :)
SR(300x^4)/SR(5x)
does this mean I need to find: the sr of 300 that is multiplied 4 time to get 300?
and 5 is as low of a sr and you can get correct?
i am lost as to where to go after this?
this problem is not from a text book. It is from a homework problem from an online math course wiht University of Pheonix Math 209/Algerbra II
thank again for all your help
Sincerely,
Sherri
Click here to see answer by jim_thompson5910(13794)

Question 193083: Simplify sqrt(36)/sqrt(64)
Click here to see answer by jim_thompson5910(13794)

Question 193139: thanks for your help.what is the square root of 1 9/16 we are not to use numerical approximation. Also the square root of 36/64.
Click here to see answer by Alan3354(6097)

Question 193141: Help please, we can aproximate if so 3x+6/8 divided by 5x+10/6 could you also show me this one. 3x/2x-6 multiplied by x^2-3x/6
Click here to see answer by Earlsdon(4900)

Question 193140: on theses I would like your on aproximation. Thank you so much

1. The squareroot of this problem(2)(7) and
if you would this one square root of (2)(6) this is how they are written in a foil type question
Click here to see answer by RAY100(1637)

Question 193284: sqrt(1 and 9/16)=?
Click here to see answer by jim_thompson5910(13794)

Question 193641: Could you please show me how to solve this:
Thank you in advance for your efforts.

Click here to see answer by Earlsdon(4900)

Question 193641: Could you please show me how to solve this:
Thank you in advance for your efforts.

Click here to see answer by Alan3354(6097)

Question 193663: Alright..Sir or ma'am, I have a Question on this one problem. it says,
Multiply:
(I Don't know how to type the actural problem) the cubic root of 7 times the cubic root of 2. I might know how to do it but I'm not sure. I would think that you'd multiply the 7 and 2 to get 14. so the answer would be the cubic root of 14. Is that Right?
Click here to see answer by RAY100(1637)

Question 193725: Multiply and Simplify
(√10+√6)(√10-√6)
This looks like difference of perfect square so would this be:
√(10)(10)-√(6)(6)
=10-6
=4?
Click here to see answer by Earlsdon(4900)

Question 193718: Ok, first of all, I'm not sure how to enter the square root sign, so I will use a v in it's place. Please help me to simplify the following, assuming all variables are non-negative real numbers: 5v1024x^4y^22
Click here to see answer by stanbon(26297)

Question 194022: simplify each expression. write your answers with positive exponents. assume that all variables represent positive real numbers
(3a -2/3)-3
Click here to see answer by jim_thompson5910(13794)

Question 194024:
cubed root xy5 x cubed rootx19y17

Click here to see answer by jim_thompson5910(13794)

Question 194058: simplify:square root of 20 over 4
Click here to see answer by Earlsdon(4900)

Question 194229: simplify assume that the expression under the radical represents a nonnegative real number 2)square root z to the second power plus 6z plus 9
Click here to see answer by stanbon(26297)

Question 194265: How do I solve this eqaution by completing the sqaure?
5x^2-10x+2=0
Click here to see answer by nerdybill(2448)

Question 194293This question is from textbook saxon algebra 2
: If 6 square root 6x-1-18(-18 is not under square root sign)=0, then x=
5/6. Did I calculate this correctly?This question is from textbook saxon algebra 2

Click here to see answer by nerdybill(2448)

Question 194308This question is from textbook saxon algebra.com
: 7i^38=
Would -7 be correct?This question is from textbook saxon algebra.com

Click here to see answer by edjones(3298)

Question 194312This question is from textbook saxon algebra 2
: What are the roots of 3x^3-48x=0?
0,-4, and 4
Please correct me if I am wrong.This question is from textbook saxon algebra 2

Click here to see answer by Earlsdon(4900)

Question 194311This question is from textbook saxon algebra 2
: What are the solutions of 9x^2-12x+5=0?
Is it x=2/3+-1/3i?This question is from textbook saxon algebra 2

Click here to see answer by checkley77(7072)

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