Tutors Answer Your Questions about Radicals (FREE)
Question 1127145: The graph to the right shows the projected elderly population of a country for ages 65-84 and for ages 85 and older. The function f(x) = 5 √x + 34.8 models the projected number of citizens ages 65-84, f (x), in millions, x years after 2010. Complete parts (a) and (b).
Use the function to find f(40)-f(0). Express this difference in simplified radical form. What does this simplified radical represent?
Click here to see answer by MathLover1(20849)   |
Question 1127838: When solving the system of equations 6x+2y=-1 and -x+10y=5 by Cramer's Rule, what are the values of D, Dx, and Dy
A. D=58, Dx=20, Dy=-28
B. D=62, Dx=20, Dy=28
C. D=58, Dx=-20, Dy=-29
D. D=62, Dx--20, Dy=29
Click here to see answer by MathLover1(20849) |
Question 1127838: When solving the system of equations 6x+2y=-1 and -x+10y=5 by Cramer's Rule, what are the values of D, Dx, and Dy
A. D=58, Dx=20, Dy=-28
B. D=62, Dx=20, Dy=28
C. D=58, Dx=-20, Dy=-29
D. D=62, Dx--20, Dy=29
Click here to see answer by ikleyn(52776)  |
Question 1127836: Solve the of equation 2x-y+z=-7, x-3y+4z=-19, and -x+4y-3z=18.
A. There is one solution (-1,2,-3)
B. There is one solution (1,-2,3)
C. There is one solution (-1,-2,-3)
D. There is one solution (1,2,3)
Click here to see answer by MathLover1(20849) |
Question 1127836: Solve the of equation 2x-y+z=-7, x-3y+4z=-19, and -x+4y-3z=18.
A. There is one solution (-1,2,-3)
B. There is one solution (1,-2,3)
C. There is one solution (-1,-2,-3)
D. There is one solution (1,2,3)
Click here to see answer by MathTherapy(10551)  |
Question 1127875: For the following exercise, determine the function described and then use it to answer the question.
The surface area, A, of a cylinder in terms of its radius, r, and height, h, is given by A = 2πr^2 + 2πrh. If the height of the cylinder is 4 feet, express the radius as a function of V and find the radius if the surface area is 360ft.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1128130: Use a calculator to graph the function. Then, using the graph, give three points on the graph of the inverse with the y-coordinates given.
f(x) = x^4 + 6x + 4, −1 ≤ x ≤ 1, y = −1,1
Y= -1 (X, Y)=
Y= 1 (X, Y)=
* I understand that the inverses are the original points reversed, so to solve the problem I would simply need to plug in each point given into the equation, above, arrive at the answer, and reverse the points in order to transform it into an inverse function. However, I’m not sure how −1 ≤ x ≤ 1 factors into the solution.
Click here to see answer by stanbon(75887) |
Question 1131171: The maximum distance D(h) in kilometers that a person can see from a height h kilometers above the ground is given by the function D(h)=111.7 times square root of h. Find the height that would allow a person to see 60 kilometers.
Click here to see answer by josmiceli(19441)  |
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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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