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

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Question 134009: Here is my problems that I am having trouble with and I had my teacher explain it to me three different times but I just don't get it. I have been working on this sheet for 4 days.I do thank you so much for any help you can give me. Thanks, in advance. Kayla
6\/20+ 8\/5-5\/45
8\/48-6\/75+7\/80
(3\/15)(-4\/45)
(\/5-\/6)(\/5+\/2)
Click here to see answer by vleith(2825)

Question 131851: Story Problem:
An isosceles right triangle with legs of length "a".
I need to write a formula in simplified radical form for the length of the hupotenuse "c" in terms of "a"
Click here to see answer by vleith(2825)

Question 134015: I messed up with the last question i submitted.
We'll say that \ax+b\ means the square root of that.
\5x+6\-2= -\3x+4\ solve for x. please help me with the steps to solving it
Click here to see answer by snwbrdfrk(10)

Question 133969: 5 cube root of 16 + cube root of 54
Click here to see answer by vleith(2825)

Question 134030: I am having trouble with this problem, can you help please? Kayla

8* sqrt 48 - 6* sqrt 75 + 7 * sqrt 80
Click here to see answer by checkley71(8403)

Question 134104: How can you simplify radicals?
Click here to see answer by solver91311(16885)

Question 134290: 8 radical 5 + 3 radical 5
Click here to see answer by jim_thompson5910(28595)

Question 134294: radical 18 + radical 12 + radical 8
Click here to see answer by jim_thompson5910(28595)

Question 134295: 3 radical 7 - 2 radical 28
Click here to see answer by jim_thompson5910(28595)

Question 134293: 8 radical 3 - 2 radical 2 + 3 radical 2 + 5 radical 3
Click here to see answer by jim_thompson5910(28595)

Question 134299: - radical 196x^2 y^3
Click here to see answer by jim_thompson5910(28595)

Question 134291: 2 radical 15 - 6 radical 15 - 3 radical 15
Click here to see answer by jim_thompson5910(28595)

Question 134292: 16 radical x + 2 radical x
Click here to see answer by jim_thompson5910(28595)

Question 134298: ( radical 6 + radical 8) ( radical 24 + radical 2)
Click here to see answer by scott8148(6628)

Question 134307: (3 + radical 5) (3 - radical 5)
Click here to see answer by edjones(7569)

Question 134459: simplify 1/2 of the square root 28 and the squareroot of 4000x squared y
Click here to see answer by stanbon(57347)

Question 134532: How would you solve the problem i^7+i^2+i^12+i^9 over (1-i)^2?
Click here to see answer by Earlsdon(6287)

Question 134532: How would you solve the problem i^7+i^2+i^12+i^9 over (1-i)^2?
Click here to see answer by josmiceli(9678)

Question 134560: Solve the equation w=Cr-2 for r where w is the weight of an object, C is a constant and r is the distance that the object is from the center of the earth.
Click here to see answer by stanbon(57347)

Question 134599: Hi, today in class i recieved a work sheet with 26 problems on it. The teacher was not there so we had a sub. The sub. did not teach us how to solve the problems. If you could help me on this one and explain it i would really appreciate it.
square root of 5 times the square root of 10.
Thankyou.
Click here to see answer by vleith(2825)

Question 134587: ( radical 2 + radical 3) ( radical 3 + radical 2)
Click here to see answer by vleith(2825)

Question 134577: 8 radical 32 + 4 radical 50
Click here to see answer by vleith(2825)

Question 134607: x-9 = the square root of x-3
Click here to see answer by solver91311(16885)

Question 134607: x-9 = the square root of x-3
Click here to see answer by vleith(2825)

Question 134559: Solve the equation w=Cr-2 for r where C is a constant and r is the distance that the object is from the center of the earth.
Click here to see answer by vleith(2825)

Question 134661: sqrt6(4sqrt6-3sqrt2)Please help!
Click here to see answer by stanbon(57347)

Question 134654: How would you express this radical in simplified form?
the square root of 4/25x^3
Click here to see answer by stanbon(57347)

Question 134653: Please tell me how you would express this radical in simplified form:
the square root of 72x^2
Click here to see answer by stanbon(57347)

Question 134652: Please help me simplify this expression:
the square root of x^2
Click here to see answer by edjones(7569)

Question 134716: I am having so much trouble with this question. I will show you the original question and then will show what I have. Please complete the problem for me from start to finish so that I am no longer as confused as I am now. This is what I have:
(3x)^-1/3=
3^-1/3 * x^-1/3=
1/3^1/3 * 1/x^-1/3=
3^1/3= 3cubert3=
1/3cubert3x
I am not allowed to leave radicals in the denominator, I am completely confused, can you please solve the original? The original problem again is (3x)^-1/3

Click here to see answer by stanbon(57347)

Question 134586: (square root 2 + 5)^2
Click here to see answer by vleith(2825)

Question 134578:
2 radical 63 - 6 radical 28 + 8 radical 45
Click here to see answer by checkley77(12569)

Question 134864: simplify: 3 radical x^4y^5 times radical xy
Click here to see answer by nycsharkman(136)

Question 134863: add and simplify:

radical x^5y^2 + radical 36xy^4
Click here to see answer by checkley77(12569)

Question 134903: 1. Find the distance between M(2, -1) and N(-4, 3) to the nearest tenth.
2. Find the distance between P(-2.5, 3.5) and R(-7.5, 8.5) to the nearest tenth.

Click here to see answer by nycsharkman(136)

Question 134862: multiply and simplify:
(
4 - 3 radical 2) (5 + 2 radical 2)

Click here to see answer by checkley77(12569)

Question 135223: Mutiply and simplify:
(4-3 square root 2) (5+2 square root 2)
Click here to see answer by stanbon(57347)

Question 135225: One leg of an isosceles right triangle measures 12 feet. Find the exact length of the hypotenuse.
Click here to see answer by stanbon(57347)

Question 135224: Rationalize the denominator:
8 - radical 2 divided by 6 - 3 square root 2
Click here to see answer by solver91311(16885)

Question 135290: This is the question I'm having problems with...
Suppose P dollars in principal is invested in an account that earns interest annually. If after t years the investment grows to A dollars, then the annual rate of return, r, on the investment is given by
r = A/P^1/t -1
Find the annual rate of return on $7,000 which grew to $12,200 after 5 years.
Round your answer to one decimal place.
I filled in the equation with:
r= 12200/7000^1/5 -1
I cancelled out the zeros to get r=122/70^1/5 -1
I'm unsure where to go from here. Thanks.
Click here to see answer by vleith(2825)

Question 135302: Please show me how to solve this equation. w= Cr-2 for r. C is the constant and r is the distance that the object is from the center of the earth. 100 pounds when at sea level 3,963 miles from the center of the earth. this is not from a textbook it was an appendix assignment from intermidiate algebra class 117.
Click here to see answer by vleith(2825)

Question 135222: simplify:

3 square root b^2 divided by 4 square root b^3
Click here to see answer by checkley77(12569)

Question 135402: multiply (6+2i)^2
Click here to see answer by stanbon(57347)

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, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145