Tutors Answer Your Questions about Radicals (FREE)
Question 87648: I'm not really good at word problems, so if someone could help I would appreciate it.
How would I solve this.
One eighth of the square root of seven less than a number is 2. What is the number?
Thank you
Click here to see answer by stanbon(57399)  |
Question 87950: I'm supposed to express in simpest radical form.
(square root of 3 minus square root of 5)(square root of 3 minus square root of 5).
Would you use the problem solving technique of (a-b)*(a+b)=asquare-bsquarePlease help!!
Thanks!!!
Click here to see answer by stanbon(57399) |
Question 88216: I need to find the solution for: radical (2y + 7) + 4 = y
I've started my solution by getting the radical by itself creating: radical (2y+7) = y - 4. Then I square both sides so I can remove the radical and end up with: 2y + 7 = y^2 - 8y + 16 from here on out I'm lost. Thanks.
Click here to see answer by rapaljer(4667)  |
Question 88217: This problem was already answered on this site, but I'm still confused and need clarification.
radical (4x + 1) + 3 = 0 First I get the radical by itself radical (4x + 1) = -3; next square both sides to remove the radical: 4x + 1 = 9; next I get the "x" by itself: 4x = 8; divide by 4 therefore x = 2 which when you put back into the equation leaves radical (4(2) + 1) + 3 = 0; radical (9) + 3 = 0; 3 + 3 does not equal zero. Although both my answer and that of the tutors is that equation has no solution, my answer is 2 and his was 0. What am I doing wrong?
Click here to see answer by rapaljer(4667) |
Question 88215: I need to find the solution for: radical (2y + 7) + 4 = y
I've started my solution by getting the radical by itself creating: radical (2y+7) = y - 4. Then I square both sides so I can remove the radical and end up with: 2y + 7 = y^2 - 8y + 16 from here on out I'm lost. Thanks.
Click here to see answer by rapaljer(4667) |
Question 88235: I have to simplify this radical equation: 8sqrt.2 - 6sqrt.7, but am I right in thinking that this radical equation CANNOT be simplified? So, there's no solution? Or am I way off track? Any help you can provide would be very much appreciated!
Thank you!!
Click here to see answer by jim_thompson5910(28598) |
Question 88348: This is a word problem, using the quadratic formula to solve an equation.
A garden area is 30 ft long and 20 ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400 ft , what is the width of the path?
please help
Click here to see answer by ankor@dixie-net.com(15661)  |
Question 88552: I think this particular problem cannot be solved by I need verfify I'm doing it correctly. First I remove the radical from the equation by squaring both sides = x - 1 = x^2 - 6x + 9. Next I need to make the equation equal to zero = 0 = x^2 - 7x + 10. Then I need to factor (x - 2)(x - 5). When I plug -2 back into check I end up with radical -3 = -5 and when I plug -5 I end up with radical -6 = -8. Therefore is it true this equation has no solution?
Click here to see answer by stanbon(57399) |
Question 88518: Hi
I am trying to solve this equation: (((x-215)*52)/x)=15
i have tried simplifying the problem: (52x-11180)/x=15
i'm unsure of the "steps" needed to solve x in this equation
if you can offer any help it would be much appreciated thanks
Click here to see answer by bucky(2189) |
Question 88934: Could someone show me step by step how to figure out the answer to this problem? Thank you
Find the length x. Express your answer in simplified radical form. The measurements are of a triangle:Left side (longer than right side) 51ft. Right side (shorter than left side) x. The bottom 45ft.
Click here to see answer by checkley75(3666) |
Question 89019: The equation gives the height of an arrow, shot upward from the ground with an initial velocity of 112 ft/s, where is the time after the arrow leaves the ground. Find the time it takes for the arrow to reach a height of 180 ft.
I begin by h=-16t+180+2
I am not sure could I get some help, please.
Click here to see answer by ankor@dixie-net.com(15661) |
Question 89023: Good evening can you please help me with these problems?
Simplify:
√[81x^12y^8z^10]
Perform the indicated operations:
2√[48] + 7√[12] –√[27]
Rationalize the denominator:
2____
√[3] + √[2]
I apologize for sending so many but these are the ones that I do not understand.
Thank you so much, I really appreciate your help.
Chocolatechrrys
Click here to see answer by scott8148(6628)  |
Question 89202: square root 4/11
Instructions are to simplify. I am not sure if the way I have this problem typed is clear or not. It is the sq. root symbol with the fraction 4/11 under it. I know that it has to do with rationalizing the denominator, but I do not understand how to do it. Please help.
Click here to see answer by Nate(3500) |
Question 89271: Please help. I'm really confused --I'm trying to simplify these radicals, but I'm lost as to what steps to take. My instructor gives a different method then I learned (I din't even have that down. We have a test and I don't think I'll pass this section unless I get some help.
I'm not sure how to key the radical sign on my computor keyboard. Here's a few of the problems (sorry there's more than one, but I need to know the formulas, because I notice that not all problems can be solved just the same way, so here's one of every kind of problem I'm simplifying:
The square root of 27x^3y^5
The cubed root 125x^9y^5/8x^3z^12
1/the square root of 5xy^2
2x/the 4th root of 3xy^2
x/3- the square root of x
Click here to see answer by stanbon(57399) |
Question 89329: I don't know how to do these. I just figured out how to simplify radical expressions, now I need to know how to add, subtr, mult, and divide them.
These are example problems:
3 and the sqrt of 8 + 4 and the sqrt of 50
sqrt of 12^2y^3 - the sqrt of 27x^4y
5th root of 4x^3y^4 * 5th root of 8x^2y^3
Sqrt of 3x^3/4y^2 * sqrt of 9x^2/2y^4
sqrt of 3x^4 divided by the sqrt of 9xy^5
Click here to see answer by stanbon(57399) |
Question 89354: Okay, I am completely confused here....x^2+18x+81 is a perfect square because (x+9)(x+9), However, I need help with figuring out if x^2-2x-1 is a perfect square, so far I am thinking that it's not? But is it? Please help...Thanks
Click here to see answer by stanbon(57399) |
Question 89353: I need someone to please review my assignment solutions...I would greatly appreciate it....I was supposed to solve for (x-5)^2=6 MY ANSWER:5+sqrt of 6....Next problem is 5(x-2)^2=3 MY ANSWER:10+sqrt of 15 over 5 Am I correct with my solutions??? If not could someone please help in explainimh where I went wrong...Thanks ;0)
Click here to see answer by stanbon(57399) |
Question 89521: The length of a rectangle is 2cm more than 5 times its width. If the area of the rectable is 65cm^2, find the dimensions of the rectable to the nearest thousandth.
Do I use a pythagorean theorem to form an equation, I do not understand. please help
Click here to see answer by scott8148(6628) |
Question 89520: I am asked to find the equilibrium for demand and supply equations
d=-5p+40
S=-p^2+30p-8
so far I have
-p^2+30p-8=-5+40
0=p^2-30p+48
so,
p=35+ sq rt(-35)^2-4(48)/2
=35+ sqrt701/2
4 options
a.)$1.43
b.)$1.57
c.)1.71
d.)$1.29
how do I simplify this? please help
Click here to see answer by stanbon(57399) |
|
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
|
