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Question 951558: A contructor undertakes to build a wall 1000 meter long in 50 days. He employed 56 men but at the end of 27 days he finds that only 448 meter of wall is build. How many extra men must the contractor employ so that the wall is completed in time .
Click here to see answer by ankor@dixie-net.com(22740)

Question 951578: Conditional Distribution
Question.Of employed u.s adults age 25 or older, 90.3% have completed high school, while 30.8% have completed college. for H = is completed high school, C = completed college, and assuming that one must complete high school before completing college, find following�
a) P(H and C)
b)P(C/H)
c) P(C'/H)
d) formula and solution
Thank you
Click here to see answer by stanbon(75887)

Question 951583: BINOMIAL DISTRIBUTION�
Last Question.A city law enforcement official has started that 20% of the items sold by pawn shops within the city have been stolen. ralph has just purchase 4 items from one of the city's pawn shops. assuming that the official is correct and fo the X= the number of ralph purchases that have been stolen, determine the following�
a) E(x)
b) P(X=0)
c) P(x=2)
d) formula and solution

Thank you
Click here to see answer by stanbon(75887)

Question 952117: Prove (cosA�1+sinA)+(1+sinA�cosA)=2�cosA
Click here to see answer by Alan3354(69443)

Question 952474: Is this correct? Thanks in advance.
Question
A student knows that she will need $3,500 five years from now. She must decide between Bank A, which offers 7% compounded weekly, and Bank B, which offers 6% compounded continuously. Which bank should she use? Explain your answer.
My answer:
Bank A
A=P(1+r)^n
3500=P(1+0.0013)^260
P=(5500)/(1+0.0013)^260
P=(3500)/(1.0013)^260
P=3500/1.4018
P=$2496.79
Bank B
A=Pe^ri
3500=Pe^0.06(5)
P=3500/e^0.06(5)
P=3500/2.71828^0.3
P=3500/1.3498585
P=$2592.86
She should use Bank A because she will invest less.
Click here to see answer by rothauserc(4718)

Question 952821: If lamb chops costs US$4.25 per pound in the United States and C$10.00 per kilogram in Canada, how much more expensive are they in C$ per kg?
Assume 1 USD = $1.0157 CAD
Click here to see answer by josgarithmetic(39617)

Question 952968: What is the length of a diagonal of a rectangular picture whose sides are 12 inches by 17 inches

Click here to see answer by stanbon(75887)

Question 952997: If lamb chops costs US$4.25 per pound in the United States and C$10.00 per kilogram in Canada, how much more expensive are they in C$ per kg?
Assume 1 USD = $1.0157 CAD
I think it wants me to find out how much 1kg of lamb chops costs in US dollars then compare to to the $10 CAD price? I'm totally lost.
Click here to see answer by josgarithmetic(39617)

Question 953214: Sara goes to Fredonia University. She has $900 in her savings account. She needs to buy a small laptop computer before the next semester. The laptop costs $600. Every two weeks she withdraws $60 from her savings account for food. How many times can Sara withdraw money for food? Write an inequality to explain.
Click here to see answer by stanbon(75887)

Question 953223: Car rental agency A will rent a compact car for $40 per day and an additional charge of $0.20 per mile. Car rental agency B will charge only $0.16 per mile, but charges $51 per day. If Adam wanted to rent a car for four days, how many miles would Adam have to drive to make car rental agency B a better bargain?
Click here to see answer by macston(5194)

Question 953393: You can make 2/3 cu ft of cement per bag. Write a rule to find the number of bags of cement needed to fill a tube 4 ft long as a function of its radius r. How many bags are needed to fill a tube with a 4 in radius?
(please show work)
Click here to see answer by rothauserc(4718)

Question 953413: Two pipes P and Q fill an empty cistern in 24 minutes & 32 minutes respectively. Both the pipes being opened together. Find when the first pipe must be turned off so that the empty cistern may be just filled in 16 minutes.
Click here to see answer by ankor@dixie-net.com(22740)

Question 953662: is x-2 a solution to this rational equation
4/(x+3)=2(x-2) why or why not

Click here to see answer by josgarithmetic(39617)

Question 953656: find the lengths of each side in this right triangle.
a=1/2x+11
b?
c=2x+1
I really do not know how to solve this. i know I have to use pythagorean theorem but the half and x etc is really throwing me off. ANy help would as always be extremely appreciated
Click here to see answer by MathLover1(20849)

Question 954183: (8,5)(-1,3)
Click here to see answer by Fombitz(32388)

Question 954158: PLEASE HELP
Find the effective rate corresponding to the following nominal rate of 6% compounded monthly.
Round to the nearest hundredth.

Click here to see answer by Alan3354(69443)

Question 954209: PLEASE HELP ME !!
Find the periodic payment which will amount to a future value of 25,000 with an interest rate of 4% compounded semi-annually at the end of five consecutive years.

Click here to see answer by rothauserc(4718)

Question 954285: A fire department spent $900 to purchase new helmets and gloves. The amount included a 6% sales tax. What was the price of the equipment, to the nearest dollar, before tax?
Choose an answer choice.
A. $846
B. $849
C. $854
D. $894
Click here to see answer by stanbon(75887)

Question 954356: Solve log(4u+12)=10
Click here to see answer by nerdybill(7384)

Question 954135: Find the standard deviation for the following data. Round your answer to the nearest hundredth. {11, 16, 17, 20}
Click here to see answer by Fombitz(32388)

Question 955065: In the following question and answer, I am trying to figure out where the "1.09^3" number comes from in the NPV solution. What is this and where do I find it? Here is the problem:
The Techron I costs $222,000, has a three-year life, and has pretax operating costs of $57,000 per year. Use straight-line depreciation to zero over the project�s life and assume a salvage value of $34,000. If your tax rate is 35 percent and your discount rate is 9 percent. Find OCF and NPV:
OCF = −$57,000(1 − 0.35) + 0.35($222,000/3) = −$11,150
NPV = −$222,000 − $11,150(PVIFA9%,3) + ($22,100/1.09^3) = −$233,158.68
Thank you for your help!
Click here to see answer by macston(5194)

Question 955227: A moth travelling at a constant speed takes 8.25 s to circle a light bulb with a radius of 7.50 cm.
What is the tangential speed of the moth?

Click here to see answer by lwsshak3(11628)

Question 955228: HOW DO WE Expand and simplify: (7x � 2y)(3x + 7y -9).
Click here to see answer by stanbon(75887)

Question 955268: A car has wheels with a radius if 42.0 cm. If the car is travelling at a speed of 90.0 km/h, what is the frequency of rotation of its wheels?
Click here to see answer by Theo(13342)

Question 955266: You are swinging a ball in a horizontal circle with a radius of 1.15 m. If the acceleration of the ball is 5.36 m/s2, what is the speed of the ball?
Click here to see answer by Fombitz(32388)

Question 955352: Hello, have a good day. I need help here with this polynomial division. Could someone explain its solution to me step by step? Thank you.
"Divide (x^4)+(x^2)-(x)+(1) by (x^2)+(2) and check."
Thank you in advance.
Click here to see answer by Theo(13342)

Question 955425: y=x^2/16+21x/16+11/8 the equation is x^2 devided by16 + 21x devided by 16
+ 11 devided by 8
s a parabola.
(i) Is the parabola u-shaped or n-shaped? How can you tell this from
the equation? [1]
(ii) Use algebra to find the x-intercepts. [4]
(iii) Explain why the y-intercept is 11/8
(iv) Find the equation of the axis of symmetry, explaining your
method. Use this information to find the coordinates of the
vertex, rounding your answers where necessary to one decima i think the parabol is u shaped due to their being a negative number in the equation. i think the 2nd answer is y=x^2/16+21x/16+11/8 16y=x^2+21x+22
16y-x^2-21x-22=0 ax^2+bx+c=0 a=-1, b=-21, c=-22+16y
x=21 sqrt64y+353/-2 21-sqrt 64y+353/-2 simplyfy
x=21+sqrt 64y+353/2 - 21-sqrt 64y+353/2''.

Click here to see answer by MathLover1(20849)

Question 955484: The average cost of college at 4-year private colleges was $29,026 in 2005. This was a 5.5 % increase from the previous year. If the cost of college increases by 5.5 % each year, what will be the average cost of college at a 4-year private college in 2011?
Click here to see answer by josmiceli(19441)

Question 955731: Seema, Meena and Reema begin to jog around a circular stadium and they complete their revolutions in 54 seconds, 42 seconds and 63 seconds respectively. After approximately how many minutes will they come together at the starting point?
Click here to see answer by lwsshak3(11628)

Question 955889: Suppose a person put $3000 more in an an account that pays 5% annual interest than in an account that pays 4% annual interest. If the total interest earned from both accounts in a year is $510. How much was invested in each account?
I don't know how to solve this, it is giving me a lot of trouble please help??
Click here to see answer by josmiceli(19441)

Question 955988: A particular work can be completed by 6 men and 6 women in 24 days. Whereas the same work can be completed by 8 men and 12 women in 15 days. Find the amount of work done, one men is equivalent to how many Women.
Click here to see answer by josgarithmetic(39617)

Question 955941: 5x-4y>-10 graph the inequality

Click here to see answer by Fombitz(32388)

Question 956181: If I have a maximum loan amount of 417,000 and a required down payment of 5%, how do I calculate the purchase price?
Click here to see answer by Theo(13342)

Question 956246: Joe Thea and Taylor invested in a partnership in the ratio 1:4:7 respectively. Years later when the partnership is worth $1.6 million Thea decides to go to graduate school and sells her part of the partnership to Hoe. How much would Joe have to pay Thea to buy her share of the business?
Click here to see answer by Theo(13342)

Question 956447: the local library raised money by having a used book sale rebecca volunteered to help her task was to sick price labels on each of the 198 book on a bookshelf in 5 mins Rebecca had labeled 18 books at this rate what is the total number of Mis Rebecca needed to
Label all 198 books ??? EXPLAIN AMSWER OR SHOW WORK!!****
Click here to see answer by josmiceli(19441)

Question 956529: Is m+m+3m equal to 3m+2?
Click here to see answer by EdenWolf(517)

Question 956565: The bill for lunch is $24.99, if you want to leave a 15% tip what would your total be?
Click here to see answer by rfer(16322)

Question 956565: The bill for lunch is $24.99, if you want to leave a 15% tip what would your total be?
Click here to see answer by macston(5194)

Question 956578: A car has wheels with a radius if 42.0 cm. If the car is travelling at a speed of 90.0 km/h, what is the frequency of rotation of its wheels?
Click here to see answer by ankor@dixie-net.com(22740)

Question 956595: Which number is a solution of the inequality 2x+7>1?
A. -6
B. -4
C. -3
D. -1
Click here to see answer by MathTherapy(10552)

Question 956595: Which number is a solution of the inequality 2x+7>1?
A. -6
B. -4
C. -3
D. -1
Click here to see answer by amarjeeth123(569)

Question 956619: What is the product of
(x+4) (x-1) (x+3)
Click here to see answer by amarjeeth123(569)

Question 956641: what is the vertex of x = y
2
− 14y + 54
Click here to see answer by MathLover1(20849)

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