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 91728: Solve by completing the square. Thank you for your help.
4t^2=8t-1
answer choices:
a. 2 +or- square root 7 over 2
b. 1 +or- square 3
---------------
2
c. 1 +or- square root 3/2
Click here to see answer by ankor@dixie-net.com(6691)

Question 91729: And the last one I'm stuck on, solve by completing the square. Thanks! :)
10x^2=4x+7
a. 2/5 +or- square root 74/5
b. 2/5 +or- square root 86/5
c. 1/5 +or- square root 74/10
Click here to see answer by scott8148(3382)

Question 91725: Can I get help with this one too: solve by completing the square
2x^2=2x+15
answer choices:
a. 1 +or- square root 29
---------------------
2
b. 1 +or- square root 31
---------------------
2
c. 2 +or- square root 22
---------------------
2
Click here to see answer by scott8148(3382)

Question 91848: simplify these? please :)
(x + 7) (x + 5)
(x + 6)2
(-3x2y3z) 3 i need help desperately!!! thank u for your help

Click here to see answer by mathispowerful(115)

Question 92020: Help!!
4 sqrt 72 - sqrt 18
Click here to see answer by tutorcecilia(2042)

Question 92162: Solve:
sqrt (2+x) = x
Click here to see answer by tutor_paul(424)

Question 92266: Please help.
2^2x = 64
Click here to see answer by checkley71(8405)

Question 92184This question is from textbook

: please help!!!!! simplify if possible or if it cant be simplified write "not possible"
(A.) sqrt(a) + sqrt (b) / sqrt (a) - sqrt (b)
(B.) sqrt(5) +1 / sqrt (5) -1
(A.)____________
(B.)____________
This question is from textbook

Click here to see answer by ankor@dixie-net.com(6691)

Question 92183This question is from textbook

: please help me simplify if possible and if it cant be simplified say "not possible" (A) sqrt(3) (sqrt (6) - 2 sqrt(3)) (A)____________
(B) sqrt(18) - sqrt(3) / sqrt (6) (B)____________This question is from textbook

Click here to see answer by ankor@dixie-net.com(6691)

Question 92289: use the properties for radicals to simplify each of the following expressions. Assume that all variables represent positive real numbers.
1) the square root of 5/3
2) the square root of 12x^3/5

Click here to see answer by ankor@dixie-net.com(6691)

Question 92492: The sq root of the product of 4 and the number is equal tp that numbers's mulitplied by the sq root of that number.
Click here to see answer by ankor@dixie-net.com(6691)

Question 92505: find two consecutive positve intergers such that the sum of there squares is
41
Click here to see answer by jim_thompson5910(13787)

Question 92627: Using one of the laws of exponents, prove that any number raised to the power 0 is 1.
Click here to see answer by stanbon(26259)

Question 93187: Multiply the following:
Cube Root of Square Root of 3^3 * Cube Root of Square Root of 3^3 (Give answer as a number - no exponents)
Click here to see answer by stanbon(26259)

Question 93284: Write the cubed root of (-125x^2) in simplified rational exponent form.
Click here to see answer by tutorcecilia(2042)

Question 93481This question is from textbook

: this is really hard to explain please help, simplify
`
This question is from textbook

Click here to see answer by Edwin McCravy(2920)

Question 93940: Evaluate: (-100)^1/2
Click here to see answer by Earlsdon(4898)

Question 93942: Write the expression in terms of i & simplify compltly:
-7^-4
Click here to see answer by checkley75(3666)

Question 94086: which is the square root of 121?
Click here to see answer by stanbon(26259)

Question 94280: Find the perimeter of a lot with sides measuring 5 sqr root 50, 3 sqr root 18, 3 sqr root 8, and 2 sqr root 27 yards
Click here to see answer by jayanthihemkos@yahoo.com(87)

Question 94279: (square root of 3 + 3)(square root of 7 - 2)
Click here to see answer by jayanthihemkos@yahoo.com(87)

Question 94278: 15x + square root of 375x^3 all divided by 3x
Click here to see answer by tutorcecilia(2042)

Question 94277: cubed root of (4 + 6t) - cubed root of (1 - 8t) = 0
Click here to see answer by Nate(3495)

Question 94296: square root(2x-1) - square root(x+3) = 1
solve
Click here to see answer by stanbon(26259)

Question 94824: I need help solving the following by using the Square Root Method.
(X-3)squared = -5
Click here to see answer by Edwin McCravy(2920)

Question 94822: I need help solving the following by using the Square Root Method.
(X-3)squared = -5
Click here to see answer by tutorcecilia(2042)

Question 95067: I need help with this problem. thank you so much
8-2(3x-3)
Click here to see answer by stanbon(26259)

Question 95068: I need help with this problem. thank you so much
4/8 divided by 4/3
Click here to see answer by stanbon(26259)

Question 95209This question is from textbook Precalculus
: what is the 6th root of t^2This question is from textbook Precalculus

Click here to see answer by bucky(1732)

Question 95396This question is from textbook

: The U.S. population in 1990 was approximately 250 million, and the average growth
rate for the past 30 years gives a doubling time of 66 years. The above formula for the
United States then becomes
P (in millions) = 250 * 2( y-1990)/66
What will the population of the United States be in 2025 if this
growth rate continues?
I put in 2025-1990/66 and I get .530
I am clueless on how to simplify or solve after that.
This question is from textbook

Click here to see answer by stanbon(26259)

Question 95473: 3√9
3√54
division
Click here to see answer by edjones(3292)

Question 95830: 19. Find the constant term that should be added to make the following expression a perfect-square trinomial. x2 + 9x (for this question my answer was 81/2 is it correct?)
23. The length of a rectangle is 3 cm more than 2 times its width. If the area of the rectangle is 95 cm2, find the dimensions of the rectangle to the nearest thousandth.
24. Find the x-intercepts. y = x2 – 3x – 11
25. Find the axis of symmetry y = x2 – x

Click here to see answer by stanbon(26259)

Question 95958: I have been trying to do this problem for a while now, i tried doing it step by step and also checking it on the calculator but it gives me a different answer every time.

3square root of 45 -2square root of 125
this is al together like side by side
Click here to see answer by bucky(1732)

Question 96011: 9x-18=3x-48
Click here to see answer by tutorcecilia(2042)

Question 96104: simplify as best as possible.
(2+squareroot of 7)(9+squareroot of 7)
Click here to see answer by checkley71(8405)

Question 96102: Rationalize the denominator. Which means to get rid of the radical in the denominator.
squaretoot of 125 - squareroot of 10
divided by square root of 5

Click here to see answer by checkley71(8405)

Question 96101: Rationalize the denominator. Which means to get rid of the radical in the denominator.
8/6- squareroot of 15
Click here to see answer by checkley71(8405)

Question 96313: 3 * 2
Click here to see answer by elima(1433)

Question 96494: i really need help with factoring this polynomial.
Click here to see answer by jim_thompson5910(13787)

Question 96563: please help with this problem
1/9+2/3
____________ I have to find the square root of this division problem
4/25+3/5
Click here to see answer by jim_thompson5910(13787)

Question 96729: Evaluate if possible.
the square root of -4
Click here to see answer by checkley71(8405)

Question 96850: 5) Find the perfect square trinomial whose first two terms are given as: m^2+14m
Click here to see answer by edjones(3292)

Question 96858This question is from textbook Blitzer College Algebra
: Suppose that N= sqrt of x (only x) +3 (not under sqrt sign) models the number of cases of an infection, in millions, of a disease x years from now.
a) approximately how many cases of the infection will there be 9 yrs from now?
b) In how many years will there be 5 million cases?
** This is not an equation from our next book, it is one that our instructor gave us as apart of a seperate assignmentThis question is from textbook Blitzer College Algebra

Click here to see answer by ankor@dixie-net.com(6691)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475