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 Solvers Lessons Answers archive Quiz In Depth

 Question 101502: how do i get the y-variable by itself in the square root of (1-(y²/16)) Click here to see answer by edjones(7569)

 Question 101536: Please help me with this problem? A virus takes up a volume of approximately 8.5x10-14 cubic centimeters. Calculate the estimated number of viruses in 28 cubic centimeters. I tried to solve by o.ooooooooooooo85x28...and was not successful. Thank you Click here to see answer by Fombitz(13828)

 Question 101827: Use a calculator to find the approximate decimal value of the follow rational and irrational numbers. Round to the nearest tenth. -2(to the square root of)5 and (cubed root of)-15 [Sorry if that doesn't make sense but I don't know how to make a square root symbol] I thought that these didn't have answers because you can't have negative square roots? Click here to see answer by Fombitz(13828)

 Question 101826: I need To find what the square root of 1,987,654 it is an extra credit problem i need to answer by friday i have an F in the class and this will make it an A please help THE QUESTION IS IN NO TEXTBOOK Click here to see answer by bucky(2189)

 Question 102400: Tutor, I am not sure how to solve this problem. Could I get some help with this? Find the altitude of the triangle. 13, 13, 10 are the sides. Thank you for your help. Click here to see answer by edjones(7569)

 Question 102406: Tutor, I have one last question I am unsure that I have correct. sqrt of 140/2000 (simplify) I am not sure it is correct I have 7/10. Thank you in advance for your help. Click here to see answer by edjones(7569)

 Question 102399: Good Evening Tutor, I need to check my answers for these two problems could you tell me if I have them correct? 1. Simplify 2 sqrt of 12 + 4 sqrt of 27 I have 2 sqrt of 39 (correct?) 2.) Simplify 6 sqrt of 2 - 6 sqrt of 7 is this 6 sqrt of 5? Thank you for your help. Click here to see answer by stanbon(57984)

 Question 102414: If the square of 2 less than an integer is 16, find the number(s). I simply do not understand the questio, much less know how to answer it. Help would be greatly appreciated. Thanks soooo much!! Click here to see answer by edjones(7569)

 Question 102737: Could someone please show me how to solve its expression??? Solve by completing the square. Click here to see answer by Earlsdon(6294)

 Question 103261: Solve: x to the 5th divided by 4x squared Click here to see answer by edjones(7569)

 Question 103300: I have two problems. I worked part of one but cannot get it finished and don't know why. It is -16t^2 + 112t = 120 -16t^2 + 112t - 120 = 0 t=(-112±√(〖112〗^2-4∙(-16)∙(-120) ))/(2∙(-16) ) t=(-112±√(12544-7680))/(-32) t= (-112±√4864)/(-32) And the other is Find the distance between (–4, 0) and (–5, –3)I put... -5+(-4)=-9 -3+0=-3 -9^2+-3^2=h^2 81+9=h^2 h=sqrt90 h=sqrt9*10 h=3sqrt10 Where did I go wrong???? Click here to see answer by stanbon(57984)

 Question 103258: Simplify: the square root of 48 x squared y to the 6th Click here to see answer by ankor@dixie-net.com(15747)

 Question 103466: I wanted to know How to do something to the ' Zero-th ' Power. a(To the Zero power)/a(-2 Power) Click here to see answer by Earlsdon(6294)

 Question 103821: two square root of x+1 is equals to sqare root of x+2 Click here to see answer by MathLover1(6815)

 Question 103779: MY NAME IS GENESIS AND SQUARE ROOT IS REALLY HARD FOR ME CAN YOU PLEASE EXPLIAN EVERY ASPECT OF IT? I WILL REALLY APPRECIATE YOUR HELP!!! Click here to see answer by elima(1433)

 Question 103867: I am having a hard time with this one square root 5x+10-5=0 a 3 b -5 c -9 d no solution Click here to see answer by checkley75(3666)

 Question 103991: I need to know how to solve a problem. I no the answer but i dont no how to expain. the prolem shows a tiny 3 almost ontop of the square root symbol then the square root -243 which i have to simlify. the answer is -6 but i dont no how to explain how i got my answer! please help me!!!!! Click here to see answer by jim_thompson5910(28717)

 Question 103820: two square root of x+1 is equals to sqare root of x+2 Click here to see answer by scott8148(6628)

 Question 104663: x-2*sqrt(x-3)=3 solve for zero... I subtract x from both sides which = -2*sqrt(x-3)=3-x then I divide by -2 from both sides sqrt(x-3)=(3-x)/-2 then to get rid of the "sqrt" ^2 on both sides x-3=(9+x^2)/4 then I subtract "x" and add 3 to both sides to solve for zero. 0=(9+x^2)/4-x+3 then I find a common denominator of 4 and solve 0=(9+x^2)/4 -4x/4+12/4 which equals 0=(x^2-4x+21)/4 then I multiply 4/1 on both side the loose the denominator. 0=x^2-4x+21 which can not be factored, but my text book gives a solution set of {7,3}. I cant find were I went wrong, please help Click here to see answer by stanbon(57984)

 Question 104983: I would love to get help with the problem below. Thank you very very much! 18+sqrt567 ___________ 9 Click here to see answer by checkley75(3666)

 Question 105649: general right angle trig: if cos(theta) = 2/5, find the value of tan(theta) i did pythagoren theroy a^2 + b^2 = c^2 2^2 + b^2 = 5^2 4 + b^2 = 25 b^2 = square root of 21 how do you simplify the square root of 21? like what is it simplified? Click here to see answer by edjones(7569)