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Question 1093831: Daniel purchased a laptop for $1180 . Currently, 3 years later, the laptop is worth $805 .
Assuming that the value is changing linearly, estimate the value of the laptop 4 years from now (a total of 7 years after it was first bought).
Click here to see answer by josmiceli(19441)

Question 1093983: Begin by graphing the standard quadratic function f(x)=x^2. Then use transformations of this graph to graph the given function. Describe the transformations in words. h(x)=-(x+6)^2+2
Click here to see answer by josgarithmetic(39617)

Question 1094097: The velocity of sound in dry air increase as the temperature increases. At 40 degrees sound travels at a rate of 355 meters per second. At 49 degrees sound travels at a speed of 360 meters per second. Write a linear model for the velocity v (in meters per second) of sound based on the temperature T (in degrees Celsius). Then use your model to estimate the velocity of sound at 60 degrees.

Click here to see answer by ikleyn(52781)

Question 1094074: What amount must be invested at 6.5%, compounded continuously, so that it will be worth R25 000 after 8
years?
Click here to see answer by jorel1380(3719)

Question 1094073: How long does it take an investment of R10 000 to double if it is invested at 8%, compounded continuously?
Click here to see answer by jorel1380(3719)

Question 1094105: Solve triangle ABC using the Law of Cosines. Round to the nearest tenth.
side c = 62.5 cm
∠B = 20�
side a = 88.2 cm
Select one:
a. b = 36.4 cm, ∠A = 124.0�, ∠C = 36.0�
b. b = 80.7 cm, ∠A = 158.0�, ∠C = 2.0�
c. b = 36.4 cm, ∠A = 56.0�, ∠C = 104.0�
d. b = 80.7 cm, ∠A = 22.0�, ∠C = 138.0�
Click here to see answer by Alan3354(69443)

Question 1094142: A machine is now worth $155,800 and will be depreciated linearly over a 10 year period, at which time it will be worth $40,300 as scrap.
(a) Find the rule of depreciation function f.
(b) What is the domain of f?
(c) What will the machine be worth in 7 years?
Click here to see answer by josmiceli(19441)

Question 1094224: 2 men and 7 boys complete a work in 14 days .3 men and 8 boys complete it in 11 days.then in how many days will 8 men and 6 boys complete the work ?

Click here to see answer by ikleyn(52781)

Question 1094248: x square-xsquare= ?

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Question 1094231: The annual interest income on two investments is $79. Of the two investments, $200 more was invested at 5.5% than at 3%. How much was invested at 3%
Click here to see answer by ikleyn(52781)

Question 1094287: My fb password is made up of 10 characters. After inputing the 1st 8 characters correctly, I notice I had forgetten the last two characters and their placement.
Lucky for me, I remembered that one of the remnant is a number and the other, a letter of the english alphabet.
.
Ques:
.
1. What's the maximum number of errors I can make?
.
2. What's the probability of me getting the right password after 17 attempts?
.
.Enjoy.
Click here to see answer by richwmiller(17219)

Question 1094392: Find area of trapezoid whose one base is28.6cms one of non parellel side is 20.2cms with angle45 and other base angle is 60
Click here to see answer by KMST(5328)

Question 1094390: A water company changed its rates from $1.95 per 1000L to 1.16$ plus monthly service charge of $45 per 1000L How much more water can be purchased.
Click here to see answer by Alan3354(69443)

Question 1094448: You made two deposits to your bank account this month. One deposit was $19.26, adn the second deposit was $22.14. Your balance at the end of the month is $68.37, and you made no withdrawals. Write and evaluate an expression for your balance at the beginning of the month?
Click here to see answer by Alan3354(69443)

Question 1094515: Suppose you invest $3,300 in stocks and bonds paying 3% and 2%, respectively. The interest from both investments after one year is $79. For the following problems, use x for the amount invested in stocks and y for the amount invested in bonds.
i dont know what questions like this is suppose to mean and how to set them up. could you please explain how to?
Click here to see answer by ikleyn(52781)

Question 1094598: Solve using quadratic formula show all work
3n^2+12n=-5
Click here to see answer by addingup(3677)

Question 1094598: Solve using quadratic formula show all work
3n^2+12n=-5
Click here to see answer by Alan3354(69443)

Question 1094599: Solve the equation for complex solutions show all work (r+4)^2=-15
Click here to see answer by Alan3354(69443)

Question 1094600: Find the y intercept and x intercept. Show all work
Y=x^2+7x
Click here to see answer by josgarithmetic(39617)

Question 1094681: For the past ten years a farmer has been recording the number of bushels of crop yield from the same parcel of land every year. On one of the numbers he recorded with an ink pen a drop of water has fallen making the number unreadable. The remaining nine numbers are 92,87,72,85,81,78,85,80 and 91. If the farmer is certain that the unreadable number is not the mode, then which of the following cannot be the unreadable number?
(A)93 (B)81 (C)84 (D)88 (E)79
I tried getting the average of all these numbers but it's not correct. Please help.
Click here to see answer by MathTherapy(10552)

Question 1094654: If a new car is valued at $24,800 and 8 years later it is valued at $8000, then what is the average rate of change of its value during those 8 years?
How many dollars per year?
Click here to see answer by Alan3354(69443)

Question 1094842: The demand function for a good is given as
Click here to see answer by richwmiller(17219)

Question 1094907: Darren drives to school in rush hour traffic and averages 21 mph. He returns home in mid-afternoon when there is less traffic and averages 42 mph. What is the distance between his home and school if the total traveling time is 1hr30min?

Click here to see answer by greenestamps(13200)

Question 1094994: this is for science, why is most of the foods we eat mixtures?

Click here to see answer by ikleyn(52781)

Question 1094941: A savings account earns 4.3% compounded continuously. How much would u need to deposit now in order to have a balance of 25000 after three years ? Assume that no additional deposits are to be made.
Click here to see answer by jorel1380(3719)

Question 1095010: The revenue function R(x) and the cost function C(x) for a particular product are given. These functions are valid only for the specified range of values. Find the number of units that must be produced to break even.
R(x)=200x-2x^2; C(x)=-x^2+25x+4900, 0< or equal x The manufacturer must produce _______ units to break even.
Click here to see answer by Boreal(15235)

Question 1095088: y varies jointly as x and z. y = 450 when x = 5 and z = 9. Find y if x = 15 and z = 0.4
Click here to see answer by josgarithmetic(39617)

Question 1095087: White Rock is 35 km due west of Abbotsford. Surrey is due north of White Rock. The distance from Abbotsford to Surrey is 20 km more than the distance from White Rock to Surrey. How far apart are surrey and Abbotsford?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1095086: A piece of manufacturing equipment can produce enough items to fill an order in 10 hours. If an auxiliary piece of equipment is used also, it will take 7 hours. How long would it take the auxiliary equipment to fill the order working alone?
Click here to see answer by ikleyn(52781)

Question 1095100: Find the length of the hypotenuse of the triangle, and simplify the radical in your answer.
The height(a) is 6 in and the length of the bottom(b) is 10 in.
Click here to see answer by addingup(3677)

Question 1095075: erica invests some money in three different accounts. she put some of it in a CD earning 3% and twice as much in an IRA paying 4% simple interest. she also decided to invest $1000 more than what she has invested in the cd Into a money mutual fund earning 5% simple interest. Determine how much money Erica invested in each account if she earned $370 in interest after 1 year.
Click here to see answer by ikleyn(52781)

Question 1095168: A man has 72ft of fencing to put around a rectangle garden. If the length is three times the width, find the dimensions of his garden (show work)?
Click here to see answer by jorel1380(3719)

Question 1095166: solve for x?
1/2+ 2/x= 3/4
Click here to see answer by jorel1380(3719)

Question 1095167: For the following two problems, find the equation of line with the given Information?
Passes through points (-2,1) (4,2)
Click here to see answer by Alan3354(69443)

Question 1095215: E=mc^2 for c^2
Click here to see answer by Alan3354(69443)

Question 1095215: E=mc^2 for c^2
Click here to see answer by addingup(3677)

Question 1095235: Find two consecutive even integers x and x+2 with a product of 80.
Click here to see answer by ikleyn(52781)

Question 1095165: solve for x showing your work?
5x^3+45x=2x^2+18
Click here to see answer by ikleyn(52781)

Question 1095296: An arrow is fired straight up from the ground with an initial velocity of 192 feet per second. Its height, s(t), in feet at any time t is given by the function s(t)=-16t^2+192t. Find the interval of time for which the height of the arrow is greater than 252 feet.
Please show work.
Click here to see answer by Alan3354(69443)

Question 1095295: For the polynomial, state (a)the degree (b)whether it is odd, even or neither (c)end behavior (d)number of zeroes and multiplicities if any (e)graph the polynomial function.
f(x)=x^4-9x^2
Click here to see answer by htmentor(1343)

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, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560