Tutors Answer Your Questions about Radicals (FREE)
Question 396715: I am having trouble with a problem I cannot seem to figure out the next step on it. The problem goes as follows:
Rationalize the denominator and simplify.
The nth root is 7 radical 8x^29/243x^8
I split the radical up betweent the top and bottom and then multiplied both sides by the bottom. I know those steps are correct, however, I do not know how to solve it from there.
nth root 7 radical 8x^29/nth root 7 radical 243x^8 times the top and bottom by the nth root 7 radical 243x^8.
Where do I go from here?
Click here to see answer by Edwin McCravy(20054)   |
Question 397091: Aki's Bicycle Designs has determined that when x hundred bicycles are built, the average cost per bicycle is given by C(x)=0.1x^2-0.5x+6.47, where C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per bicycles.
Click here to see answer by josmiceli(19441)  |
Question 398020: I took a pre-test but I have no answer sheet was just wondering if I've done these right or not! Thanks for your time, I appreciate it!
Simplify:
1: √9√4 My answer: 6
2: √56/√8 My answer: √7
3: √9ab^4 My answer: 3b^2√a
4: √50x^2 My answer: 5|x|√2
5: √100y^2z^4 My answer: 10yz^2
6: 2√5+2√5 My answer: 4√5
7: 6√7-√7 My answer: 5√7
8: -3√2+2√2 My answer: -√2
9: 2√7+3√7+√7 My answer: 6√7
Solve the equation:
10: √x=9 My answer: x=81
11: √z=-1 My answer: no solution
12: √2a=2 My answer: a=2
13: p=√2p-1 My answer: p=1
Click here to see answer by Alan3354(69443)  |
Question 399134: is there more then one way to solve a negative under a radical? if so can you show me the different ways i somewhat understand the consept of the i but i don't know how to bring it back into the equation like the square root of -32 i know you can breake it down and bring out the i but what next thnk you for your time sorry if im confusing
EX. (this is where im stuck)
then i can break 32 down by:
since 16 is the perfect square of 4 you bring 4 out of the radical
i think thats right but i dont know where the i gose or if you can get rid of it entirely??
P.S. i hope that makes sence
if there is another way please show me thanks again
Click here to see answer by MathLover1(20849)  |
Question 399134: is there more then one way to solve a negative under a radical? if so can you show me the different ways i somewhat understand the consept of the i but i don't know how to bring it back into the equation like the square root of -32 i know you can breake it down and bring out the i but what next thnk you for your time sorry if im confusing
EX. (this is where im stuck)
then i can break 32 down by:
since 16 is the perfect square of 4 you bring 4 out of the radical
i think thats right but i dont know where the i gose or if you can get rid of it entirely??
P.S. i hope that makes sence
if there is another way please show me thanks again
Click here to see answer by solver91311(24713)  |
Question 399134: is there more then one way to solve a negative under a radical? if so can you show me the different ways i somewhat understand the consept of the i but i don't know how to bring it back into the equation like the square root of -32 i know you can breake it down and bring out the i but what next thnk you for your time sorry if im confusing
EX. (this is where im stuck)
then i can break 32 down by:
since 16 is the perfect square of 4 you bring 4 out of the radical
i think thats right but i dont know where the i gose or if you can get rid of it entirely??
P.S. i hope that makes sence
if there is another way please show me thanks again
Click here to see answer by richard1234(7193)  |
Question 399778: The formula y=0.4x2-36x+1000 models the number of accidents, y, per 100 millions miles driven, for drivers x years old, where 20 < x< 50.Find the coordinates of the graph’s vertex and describe what this represent in practical terms.
· A company uses the function C(x)=0.01x2-1.2x+1000 to model the unit cost in dollars for producing x motors. Answer the following question; 1: For what number of motors is the unit cost at its minimum? 2: What happens if you produce 1 motor more or 1 motor less what the number of motors found in the first part of the problem. Discuss the effect of this change with your learning team.
Click here to see answer by stanbon(75887) |
Question 399998: multiply and simplify this:
m squared - 9/9m times 7m/(m+3) The answer I got is 7m(m-3)/9m
I don't think this is simplified enough. Need steps. I am a homeschool mom and I don't have the answer to this problem to explain to my Algebra II child. Also don't know how to make exponents on the computer!
Angie
Click here to see answer by jsmallt9(3758) |
Question 400295: 2x^2-5=-55
2x^2-50=0
2(x^2-25)=0
2(x-5)=0 2(x+5)=0
x=5 x=5
I checked my work for both x's and it does not come out right for both I come up with 45=55. I am not wure what I am doing wrong here. What is the answer to x? Please show all work and how to check the answer.
Click here to see answer by scott8148(6628)  |
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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, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710
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