Tutors Answer Your Questions about Systems-of-equations (FREE)
Question 1034166: Suppose that in a system of equations, x represents the time spent riding a bike, y represents the distance traveled, and you determine the solution to be (1, -7). Use this problem to discuss the importance of analyzing solution in the context of real-world problems. Thanks in advanced
Click here to see answer by fractalier(6550)   |
Question 1034559: A spherical hailstone grows in a cloud. The radius of the hailstone is increasing at the rate of 0.2mm/s. a) Determine a formula for the radius, r, of the hailstone at time t, assuming that the radius of the hailstone is 0 mm at t = 0 b) Express the volume, V, of the hailstone in terms of its radius, r c) Determine a formula for (V(r))(t), and explain what it represents
What i have so far is a) v(r) = 0.2t b) V = 4/3*pi*r^3, v(r) = 4/3pi(0.2t)^2 c) i am still stuck on part c) and what it means
Click here to see answer by robertb(5830)  |
Question 1037471: Johann has an antique printing press that he inherited from his grandfather.The printing press is currently worth $26 600, and it has been appreciating at a rate of 3% each year. Use a graphical model of the problem to predict how many years will it take for the value of the printing press to double.
Thanks so much :)
Click here to see answer by Theo(13342)  |
Question 1037471: Johann has an antique printing press that he inherited from his grandfather.The printing press is currently worth $26 600, and it has been appreciating at a rate of 3% each year. Use a graphical model of the problem to predict how many years will it take for the value of the printing press to double.
Thanks so much :)
Click here to see answer by josmiceli(19441)  |
Question 1039014: What is the solution of the set:
x^2 - y^2 = -15
2x - y = 6
I was wondering if there is another method of solving it than substituting which is such a long process? Knowing the first one can be written as (x+y)(x-y) = -15, how can I manipulate the 2nd system?
Click here to see answer by josgarithmetic(39614) |
Question 1039014: What is the solution of the set:
x^2 - y^2 = -15
2x - y = 6
I was wondering if there is another method of solving it than substituting which is such a long process? Knowing the first one can be written as (x+y)(x-y) = -15, how can I manipulate the 2nd system?
Click here to see answer by ikleyn(52756)  |
Question 1040263: In 2000, the population of Charleston, South Carolina, was 116,300. During the 1990s, its population increased at an average rate of 800 people per year. In 2000, the population of Greenville, South Carolina, was 56,002. During the 1990s, its population decreased at an average rate of 228 per year. Suppose the population of each city continues to increase and decrease, respectively, at these rates. Approximately how many years ago (from the year 2000) would the populations of the two cities have been the same?
Click here to see answer by josmiceli(19441) |
Question 1041233: I shall write a two digit number sum of two digit number is 14 and if 29 is subtracted from the number two digits will be equal .Led us from the simultaneous equations by solving them let us see what will be the two digit number.
Click here to see answer by MathTherapy(10549)  |
Question 1042528: Provide two different sketches that satisfy the conditions described below.
a) Three cycles of a trigonometric function with a period of 10 and amplitude of 3. The domain of the function is -10 ≤ x ≤20, xER. State the following key features for the function: range, intercepts, maximum/minimum values, sinusoidal axis of symmetry.
Thanks :)
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
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