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 154318: Find the product of the cube of (-4/3) and square of (-3/2). Click here to see answer by Alan3354(31518)

 Question 154434: Hint for this assignment Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. YOu can use 1 mile = 5,280 feet for your conversions. 1. many people know that the weight of an object varies on different planets, but did you know that the weight of an object on earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: w=Cr^-2, where C is a constant, and r is the distance that the object is from the center of the Earth. A. sovle the equation w=Cr^-2 for r b. Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963 miles from the center of the Earth) C. Use the value of C you found in the previous question to determine how much the object would weigh in i. Death valley (282 feet below sea level) ii. The top of Mt Mckinley (20,320 feet above sea level) 2. The equation D=1.2 sq root of h gives the distance, d, in miles that a person can see to the horizon from a height, h, in feet. a. solve this equation for h b. Long's peak in the rocky mountain national park, is 14,255 feet in elevation. How far can you see to the horizon from the top of Long's peak? can you see cheyenne, wyoming (about 89 miles away)? Explain your answer. Click here to see answer by stanbon(57962)

 Question 154791: What do the following two expressions have in common? "three to the second power" and "three squared" Click here to see answer by stanbon(57962)

 Question 154863: 12/√(5x+6)=√(2x+5) Ok I know you square each side to come up with 144/5x+6=2x+5 Then you multiply 5x+6 to each side. 144=(5x+6)(2x+5) 144=10x^2+25x+12x+30 move 144 to the other side of the equal which makes 0=10x^2+37x-114 0=(2x )(5x ) I can not figure out what goes along with 2x and 5x to make it equal. Thanks Click here to see answer by Fombitz(13828)

 Question 154934: A support for a roof truss is 2√5 feet long. Which of the following is the same measurement? A.5√2 feet B.√10 feet C.V20 feet D.10 feet Click here to see answer by stanbon(57962)

 Question 155266: To simplify the expression into the form x^r*y^s we first rewrite each term in fractional powers: {{ sqrt (x^2*y^2) = x^1*y^1 }}, {{ 3 sqrt (x^5*y^4) = x^(5/3)*y^(4/3) }} and {{ 5 sqrt (x^5) = x^1 }}. Combining all the powers we get = x^__*y^__. Click here to see answer by checkley77(12569)

 Question 155347: 3 square root sign 64x7 divided by 3 square root sign 4x Click here to see answer by checkley77(12569)

 Question 155391: find the lenght of a rectangle whose perimeter is 34.6 centimeters and whose width is 5.7 centimeter Click here to see answer by checkley77(12569)

 Question 155713: 3 square root sign 64x7 divided by 3 square root sign 4x I have asked this question before and a person was kind enough to answer it and it is greatly appreciated...but I do not understand how the person got the answer and the answer is not one of the multiple choice answers. The three before the square is what I believe is called a n-th root...but I could be wrong... I am confused by this whole problem. The multiple choice answers are 1. x^2 3square root sign 4 2. x 3square root sign 16 3. 4x^2 3square root sign 4x^2 4. x^2 3square root sign 16 Click here to see answer by Earlsdon(6294)

 Question 155881: The distance in miles can be seen on the surface of the ocean is given by d=1.4√h where h is the height above the surface of the water. How many feet high above the water (to the nearest tenth) would a pirate have to climb to see 16 miles? Click here to see answer by jim_thompson5910(28715)

 Question 155883: The distance d in miles that can be seen on the surface of the ocean is given by d=1.3√(h,) where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to see a distance of 13.5 miles? Click here to see answer by ankor@dixie-net.com(15746)

 Question 156155: Is 4 or -1 a root of the equation ysquared-3y=4? Click here to see answer by jim_thompson5910(28715)

 Question 156366: 3 square root x -5=3 What does x= ? 3 (square root x) -5 = 3 3 (square root x) = 8 square root x = 8/3 x 64/9 Click here to see answer by Alan3354(31518)
 Question 156366: 3 square root x -5=3 What does x= ? 3 (square root x) -5 = 3 3 (square root x) = 8 square root x = 8/3 x 64/9 Click here to see answer by gonzo(654)

 Question 152750: how do i simplify this?(8 x square root of 3)(3 x square root 10) Click here to see answer by Alan3354(31518)

 Question 156540: 1)Please advise if this problem is solved algebraically. cube root of x minus five equals three x^1/3 - 5 = 3 x*1/3 - 5 + 5 = 3 + 5 x^1/3 = 8 (x^1/3)^3/1 = 8^3/1 x = 512 Click here to see answer by jim_thompson5910(28715)

 Question 156559: what is the square root of 36\81? i skipped a grade of math and i dont understand how to get it Click here to see answer by oscargut(900)

 Question 122232: Please help solve for this equation Show the steps that you would take to solve the following algebraically: 5-2/x-6=10-2x/x-6 Show work here What potential solution did you obtain? Explain why this is not a solution. Click here to see answer by mae`01(1)

 Question 156733: What potential solution did you obtain? Explain why this is not a solution. show the steps that you would take to solve the following algebraaiclly 5-2/x-6=10-2x/x-6 Click here to see answer by mizjoice(22)

 Question 156769: Simplify by taking roots of the numerator and the denominator. 3 sqrt (343x^14 / y^3) 3 is an exponent Thank you for any help!! Click here to see answer by Earlsdon(6294)

 Question 156768: Find the following.. 20 sqrt (-10)^20 20 is an exponent. Help!!! Click here to see answer by orca(409)

 Question 156975: 2√(w+4)=5 Solve each equation and check for extraneous solutions. Click here to see answer by jim_thompson5910(28715)

 Question 157333: a) Solve 2x^2=6 (my solution is x=sqrt3, -sqrt3. b) Find the x-intercepts of f(x)=2x^2-6 Click here to see answer by Fombitz(13828)

 Question 157413: How do you solve 625 to the 3/4 power? Click here to see answer by gonzo(654)

 Question 157824: How do you find the square root of 4^2 + -34 - 4? Click here to see answer by Fombitz(13828)

 Question 158211: What is the sqrt of (x+2) - x = 0 Click here to see answer by jim_thompson5910(28715)

 Question 158297: how do you solve (x + 4)(exponent)5 = -1 Thanks Click here to see answer by scott8148(6628)

 Question 159088: square root ( a^2 + b^2) = x^2 Click here to see answer by midwood_trail(310)

 Question 159129: How do I find three rational numbers between the negative square root of 26 and the negative square root of 15? Click here to see answer by Alan3354(31518)

 Question 159235: this is a weird question to type out but basically I have to prove without using a calculator that (root)4 + (root that was above 4 continues)(root)7 [root that was above 4 ends]+ (root)4 - (root that was above 4 continues)(root)7 [root that was above 4 ends] = (root)14 Plz help!!! Click here to see answer by Alan3354(31518)

 Question 159653: Pls , help me to solve this problem" (2x^3+x^2)-(8x-4)=0 Thanks Click here to see answer by midwood_trail(310)

 Question 160203: I am doing my homework assignment and I come across this problem... squareroot sign 28 + 4 squarroot sign 7 - 2 squareroot sign 24 I know I should be able to figure this out, but my brain is fried!!! Click here to see answer by Edwin McCravy(8999)

 Question 160434: What is the value of the 3rd square root of 27? Click here to see answer by Earlsdon(6294)

 Question 160436: Solve x^2=50, x is a real number. Simplify as much as possible. If there is more than one solution, separate by commas Click here to see answer by jim_thompson5910(28715)

 Question 160437: Solve equation for x using quadratic formula 4x^2+5x-2=0 If there is more than one solution, seperate with commas Click here to see answer by jim_thompson5910(28715)
 Question 160437: Solve equation for x using quadratic formula 4x^2+5x-2=0 If there is more than one solution, seperate with commas Click here to see answer by checkley77(12569)

 Question 160435: What is the 4th square root of 96x^7z^12? Click here to see answer by checkley77(12569)

 Question 160433: Write expression in simpliest radical form what is the 4th square root of 96? Click here to see answer by checkley77(12569)

 Question 160625: sorry just dont get it, can anyone help, q = square root A over 4, i have to find the value of A. Click here to see answer by jojo14344(1512)

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