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

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 Algebra: Radicals -- complicated equations involving roots Solvers Lessons Answers archive Quiz In Depth

 Question 621140: Rationalize the denominator and simplify. 12 divided by square root 7 plus 2 Click here to see answer by Edwin McCravy(8999)

 Question 621144: Rationalize the denominator and simplify. 5 divided by 4 minus square root 3 Click here to see answer by solver91311(17059)

 Question 621139: Rationalize the denominator and simplify. Square root variable A plus 2 square root variable Y over/divided by square root variable A minus 2 square root variable Y Click here to see answer by solver91311(17059)

 Question 621154: Rationalize the denominator and simplify. 5 divided by 4 minus square root 3? Please and thank you Click here to see answer by solver91311(17059)

 Question 621004: how do i simplify the square root of 100x to the 6 power Click here to see answer by ankor@dixie-net.com(15745)

 Question 622116: I have to solve this equation with radicals and I am not sure if i just square both sides and then that removes the radicals and it becomes a normal equation. I think that's how to do it but for some reason I think there might be a different rule for when two radicals are on two sides of the equations. If you could help me with this and show work I would really appreciate it, this has me stumped. Click here to see answer by vleith(2825)

 Question 622136: What is the simplified form of the cubed square root of -1? Click here to see answer by math-vortex(472)

 Question 622288: The formula for the volume of a sphere is V=4/3(pi)r^3. Find the radius to the nearest hundredth of a sphere with each volume. V= 20ft^3. Could you please explain how you got the answer so I know how to do the other problems? Thank You!! Click here to see answer by matineesuxxx(27)
 Question 622288: The formula for the volume of a sphere is V=4/3(pi)r^3. Find the radius to the nearest hundredth of a sphere with each volume. V= 20ft^3. Could you please explain how you got the answer so I know how to do the other problems? Thank You!! Click here to see answer by solver91311(17059)

 Question 622564: 9b^3 + 7b - 5*(9 b^3 - 2b) = Click here to see answer by lenny460(829)

 Question 623092: simplify root symbol 39a^3b^5/root symbol 13a2b I am having difficulty with this can you help please???? Click here to see answer by jsmallt9(3296)

 Question 623755: Rationalize the denominator in the following expression. 4/cuberoot(3) (4 divided by cube root of 3) Click here to see answer by solver91311(17059)

 Question 623983: how do I figure out how to remove a term with a negative power from underneath a square root? for example, I have be to the negative 3 under a square root. Would I multiply it by 1/2 to get rid of the negative? Click here to see answer by ewatrrr(10682)

 Question 624294: I need help with this portion of my assignment and I'm not sure how to set-up these problems and show my work. If anyone can oplease help me to solve these problems your help will be greatly appreciated...Thank You in advance. Radicals Assignment PART C To estimate the benefit of their cleanup efforts, biologists count the number of birds’ nests along the shoreline. The total number of nests is inversely proportional to the amount (in tons) of oil remaining. PROBLEM SHOW YOUR SOLUTIONS HERE 1. Write an equation relating N (the number of nests found along the shoreline) to A (the amount of oil remaining). Use k to represent the constant of variation. 2. When there were 1000 tons of oil remaining from the spill, biologists counted 30 nests along the shoreline. Find the constant of variation k. 3. If the organization estimates that they will be able to clean up all but 75 tons of oil, how many nests should be along the shoreline when cleanup efforts are complete? Click here to see answer by ewatrrr(10682)

 Question 624293: This assignment is about Radical expression and I've been struggling to get help and a clear understanding for this assignment of ho these problems should be set-up and written to show the work. Is there anyone that can help me please? This is Part B of my assignment and I managed to get through Part A, but now I'm confused. Radicals PART B The cost, in millions of dollars, to remove x % of the oil in the sea is modeled by PROBLEM SHOW YOUR SOLUTIONS HERE 1. What is the cost to remove 80% of the oil? 2. What is the cost to remove 95% of the oil? 3. What is the cost to remove 99% of the oil? 4. For what value is this equation undefined? 5. Provide an explanation of why it makes sense for the cost to undefined for the value found in #4, based on what you know about pollution. Click here to see answer by ewatrrr(10682)

 Question 624313: Let f(x) = 4x - 5 and g(x) = 6x - 3. Find f(x) g(x). A. 10x – 8 B. 10x – 2 C. –2x – 8 D. –2x – 2 Click here to see answer by oscargut(900)

 Question 624323: PART B The cost, in millions of dollars, to remove x % of the oil in the sea is modeled by C=12,000/300-3x PROBLEM SHOW YOUR SOLUTIONS HERE 1. What is the cost to remove 80% of the oil? 2. What is the cost to remove 95% of the oil? 3. What is the cost to remove 99% of the oil? Click here to see answer by ewatrrr(10682)

 Question 624474: Simplify. Remember to use Absolute-value notation when necessary. If a root Cannot be simplified, STATE This. Please Show your steps, and explain as you go, for full credit. 5 is the square root of - 1/32 I did not know how to make the square root here. But the 5 is right above the square root sign. The - 1/32 is inside the square root. Any and all help is greatly appreciated on this problem. Click here to see answer by ewatrrr(10682)

 Question 624501: Multiply and simplify if possible. sqrt7x[sqrtx - 7sqrt7] A. xsqrt7 - 49sqrtx B. xsqrt7 - xsqrt49 C. sqrt7x - 49x D. -sqrt42x Click here to see answer by ewatrrr(10682)

 Question 624498: What is the simplest form of the quotient? ^4sqrt400 ------------ ^4sqrt5 A. 5^4sqrt2 B. 2^4sqrt5 C. 2sqrt5 D. ^4sqrt80 Click here to see answer by Alan3354(31487)

 Question 624556: I can't seem to get the right answer for this problem. Can anyone help? 2√(50)-√(32)+3√(72) Click here to see answer by solver91311(17059)
 Question 624556: I can't seem to get the right answer for this problem. Can anyone help? 2√(50)-√(32)+3√(72) Click here to see answer by josmiceli(9817)

 Question 624502: What is the simplest form of the quotient? ^3sqrt162 A. 3^3sqrt3 B. ^3sqrt162 C. -3^3sqrt3 D. 3sqrt3 Click here to see answer by oscargut(900)

 Question 624497: What is the simplest form of the radical expression? 2^4sqrt2x + 6^4sqrt2x A. 8^4sqrt4x B. 8^4sqrt2x C. 16^4sqrt2x D. not possible to simplify Click here to see answer by jsmallt9(3296)

 Question 624594: f(x)=(4x)sqrt(3-x) a)find the zeroes of the function b)approximate the intervals over which the function is increasing, decreasing, or constant c)determine whether the function is even, odd, or neither I tried it out and for a) (0,4)(3,0) c)neither Click here to see answer by jsmallt9(3296)

 Question 624695: Let f(x) = -2x - 7 and g(x) = -4x + 3. Find (f ° g)(-5). A. 23 B. –53 C. –9 D. 3 Click here to see answer by oscargut(900)

 Question 624702: What is the solution of the equation? 4(3-x)^4/3 - 5 = 59 A. –5, 11 B. 5 C. 11 D. –11 Click here to see answer by Edwin McCravy(8999)
 Question 624702: What is the solution of the equation? 4(3-x)^4/3 - 5 = 59 A. –5, 11 B. 5 C. 11 D. –11 Click here to see answer by ewatrrr(10682)

 Question 624697: What is a simpler form of the radical expression? ^4sqrt81x^20y^8 A. 3|x^5|y^2 B. 9|x^25|y^4 C. 9x^25|y^4| D. 3x^5|y^2| Click here to see answer by ewatrrr(10682)

 Question 624696: A garden has width sqrt13 and length 7sqrt13 . What is the perimeter of the garden in simplest radical form? A. 14sqrt13 units B. 16sqrt13 units C. 91 units D. 8sqrt13 Click here to see answer by ewatrrr(10682)

 Question 624740: how do you write the 4th root of x multiplied by the 5th root of 3x as a single radical expression? Click here to see answer by jim_thompson5910(28696)

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