Tutors Answer Your Questions about Radicals (FREE)
Question 1065890: If an object is propelled upward from ground level on Mars with an initial velocity of 130 feet per second, its height, s, (in feet) in t seconds is given by the formula s=−13t^2+130t.
How long will it take for the object to be at a height of 208 feet?
The object will be at a height of 208 feet in ____ seconds.
Click here to see answer by solver91311(24713)   |
Question 1066869: I try to figure out this one but still don't get it. My answer still not match from the textbook. Please help!
If each side of a square is increased by 5 cm, the total area of both the new square and the original square will be 200 cm2. Approximate to the nearest tenth of a centimeter the length of each side of the original square.
Click here to see answer by josgarithmetic(39616) |
Question 1067437: Hello . I am a high school student and we just learned about radical and radical notation.
Our teacher says index of radical must be integer and greater than 2 by definition. But I can’t understand why we can’t have radical with negative or rational numbers? For example why we can’t have this? http://imgur.com/a/qWZqG
Our teacher says it’s because negative and rational indexes are not defined for radical notations but why they are not defined? They certainly has answers. any help is greatly appreciated
Click here to see answer by Boreal(15235)  |
Question 1068033: Minerva starts a savings account with $50. The interest on the account balance is compounded annually. The graph below shows the account balance in terms of x ,the number of years since the account was opened.
Graph: https://vallejocity.owschools.com/media/g_alg01_ccss_2016/8/img_alg1u08l08_01.gif
After 12 years, Minerva's account balance should be about $100, assuming that she does not add or withdraw any money from the account.
A.) True
B.) False
C.) Cannot be determined from the information given.
Click here to see answer by stanbon(75887) |
Question 1068066: The function f(x) = 200 × (1.098)^x represents a village's population while it is growing at the rate of 9.8% per year.
1.) Create a table to show the village's population at 0, 2, 4, 6, 8, and 10 years from now.
2.) Use your table to create a graph that represents the village's population growth.
3.) When the population doubles from its current size, the village will need to dig a new water well. To the nearest half of a year, about how long before it is time for the village to dig the new well?
Click here to see answer by ikleyn(52776)  |
Question 1068028: You invest $2,000 in an account that is compounded annually at an interest rate of 5%. You never withdraw money from the account. Which equation below gives the amount of money you will have in the account after t years?
A.) A(t) = 2,000e^5t
B.) A(t) = 2,000e^0.05t
C.) A(t) = 2,000(1.5)^t
D.) A(t) = 2,000(1.05)^t
Click here to see answer by ikleyn(52776) |
Question 1068029: You invest $2,000 in an account that is compounded continuously at an interest rate of 5%. You never withdraw money from the account. Which equation below gives the amount of money you will have in the account after t years?
A.) A(t) = 2,000e^5t
B.) A(t) = 2,000e^0.05t
C.) A(t) = 2,000(1.5)^t
D.) A(t) = 2,000(1.05)^t
Click here to see answer by ikleyn(52776) |
Question 1068538: I am having a bit of an issue solving sqrt(3x+1)-sqrt(x-1)=2 or √3x+1-√x-1 = 2
This is what I have done so far:
√3x+1 = √x-1+2
=> (√3x+1)2 = (√x-1+2)2
=> 3x+1 = x-1+4+4√x-1
=> -4√x-1 = -3x-1+x-1+4 or is it 4 √x+1 = -3x-1+x-1+4?
=> 4√x-1 = 2x-2 *This is where I get lost. I have seen this as -2x+2 as well. I am really confused at this point and need to get to the next steps.
Thank you for your help in advance.
Click here to see answer by Fombitz(32388)  |
Question 1068538: I am having a bit of an issue solving sqrt(3x+1)-sqrt(x-1)=2 or √3x+1-√x-1 = 2
This is what I have done so far:
√3x+1 = √x-1+2
=> (√3x+1)2 = (√x-1+2)2
=> 3x+1 = x-1+4+4√x-1
=> -4√x-1 = -3x-1+x-1+4 or is it 4 √x+1 = -3x-1+x-1+4?
=> 4√x-1 = 2x-2 *This is where I get lost. I have seen this as -2x+2 as well. I am really confused at this point and need to get to the next steps.
Thank you for your help in advance.
Click here to see answer by Boreal(15235) |
Question 1068538: I am having a bit of an issue solving sqrt(3x+1)-sqrt(x-1)=2 or √3x+1-√x-1 = 2
This is what I have done so far:
√3x+1 = √x-1+2
=> (√3x+1)2 = (√x-1+2)2
=> 3x+1 = x-1+4+4√x-1
=> -4√x-1 = -3x-1+x-1+4 or is it 4 √x+1 = -3x-1+x-1+4?
=> 4√x-1 = 2x-2 *This is where I get lost. I have seen this as -2x+2 as well. I am really confused at this point and need to get to the next steps.
Thank you for your help in advance.
Click here to see answer by Alan3354(69443)  |
Question 1068899: A scientist begins an experiment with a culture of 5 bacteria cells. Every hour, the number of bacteria cells triples. Which equation can be used to represent the number of bacteria cells, y, as it relates to time in hours, x?
A.) y = 5 x
B.) y = 3(5) x
C.) y = 3 x
D.) y = 5(3) x
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1069316: I have to solve this factoring problem :
6x^4-10x^3-6x^2
the # after the ^ is the exponents
I found a GCF of 2x^2 and left off at:
2x^2(3x^2-5x-3)
I did x+x=b which is -5
and x*x=ac which is -9
so what two numbers would added give me -5 but multiplied give me -9?
Thats as far as i got. Please help me
Thanks
Click here to see answer by josgarithmetic(39616) |
Question 1069316: I have to solve this factoring problem :
6x^4-10x^3-6x^2
the # after the ^ is the exponents
I found a GCF of 2x^2 and left off at:
2x^2(3x^2-5x-3)
I did x+x=b which is -5
and x*x=ac which is -9
so what two numbers would added give me -5 but multiplied give me -9?
Thats as far as i got. Please help me
Thanks
Click here to see answer by MathTherapy(10551)  |
|
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
|
