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Question 1140749: 1. The perimeter of a rectangle is 1080 cm. The length of the rectangle is eight times the width. Using the Singaporean Bar Method. Find the dimension of the rectangle. Also, find the length to width.
Click here to see answer by josgarithmetic(39617)

Question 1140853: I know this is a M1 V1=M2 V2 problem but I can't figgur out how to start it.
Calculate the molarity of solutions made by mixing 175 ml of 3.0 M HCL with 115 mL of 6.0 M HCL.
Click here to see answer by josgarithmetic(39617)

Question 1140951: 20.0 mL of apple juice is added to some water for a total volume of 120.0 mL of solution. Calculate the % apple juice.

Click here to see answer by josmiceli(19441)

Question 1141032: A 13 L solution that was 11% vinegar was mixed with a 6 L solution that was 70% vinegar. Find the new concentration of vinegar.
Click here to see answer by Alan3354(69443)

Question 1141040: How much pure alcohol should we add to 6 gallons of 10% acid solution to obtain a solution
that is 40%?
Click here to see answer by josgarithmetic(39617)

Question 1141133: a contractor mixes concrete from bags of premix for small jobs. How many bags with 6% cement should he mix with 4 bags of 9.5% to produce a mix containing 7% cement
Click here to see answer by Alan3354(69443)

Question 1141137: a contractor mixes concrete from bags of premix for small jobs. How many bags with 6% cement should he mix with 4 bags of 9.5% to produce a mix containing 7% cement
A) 12 bags B) 10 bags C) 19 bags D) 14 bags
Click here to see answer by Alan3354(69443)

Question 1141429: 12) In order to obtain 800 mL of a 2.5% lidocaine lotion. How much water must be used to dilute how much of a 10% lidocaine lotion? (Hint: water is 0% lidocaine lotion.)
Click here to see answer by rothauserc(4718)

Question 1141587: Alan wishes to dilute a mixture that is 10% alcohol to one that is 8% alcohol. How much 5% alcohol mixture should he add to 8 L of the 10% mixture?
Click here to see answer by greenestamps(13200)

Question 1141647: A chemist is using 384
milliliters of a solution of acid and water. If 19.2%
of the solution is acid, how many milliliters of acid are there? Round your answer to the nearest tenth.

Click here to see answer by ikleyn(52781)

Question 1141702: You have $1000 to invest in two different accounts. To save the money you need for college, you need to average 6.1 percent interest. If the two accounts pay 3 percent and 7 percent interest, how much should you invest in each account?
Click here to see answer by ikleyn(52781)

Question 1141747: In a dog park, there are 84 total legs. If there are 3 more dogs in the park than people, how many dogs are in the park?
Click here to see answer by ikleyn(52781)

Question 1141747: In a dog park, there are 84 total legs. If there are 3 more dogs in the park than people, how many dogs are in the park?
Click here to see answer by greenestamps(13200)

Question 1141760: An athlete runs for 2 hours and walks for 1 hour to cover a distance of 40km. If he runs for 2.5 hours and walks for 0,5 hours he covers 45km. Calculate his running speed and his walking speed. You may assume that each is constant.
Click here to see answer by josgarithmetic(39617)

Question 1141820: When solving systems of we have at least two unknowns. A common example of a system of equations is a mixture problem. If I know that the solution I use to clean my car windows is 65% water and 35% cleaner, I have one relationship. If I also know that I only have a 3-liter spray bottle that gives me a second relationship.
1. What do the unknowns in this system represent and what are the two equations that that need to be solved?
2. Finally, solve the system of equations.
Click here to see answer by ikleyn(52781)

Question 1141990: you made400 rolls which is 40% of what you have to make .what is the total number of rolls you have to make
Click here to see answer by Alan3354(69443)

Question 1142112: On a number line, what is the midpoint if a line segment beginning at -4 and ending at 3/4
A) 2 3/8
B) -1 5/8
C) -2 3/8
D) -3 1/4
Click here to see answer by Alan3354(69443)

Question 1142107: On a number line, what is the midpoint of a line segment beginning at -4 and ending at 3/4?
A) 2 3/8
B) -1 5/8
C) -2 3/8
D) -3 1/4
Click here to see answer by josgarithmetic(39617)

Question 1142106: If Q is the midpoint of RS, which of the following must be true?
A) 2RS= QS
B) 2QS=RS
C)1/2RQ=RS
D) 1/2RS =2RQ
Click here to see answer by ankor@dixie-net.com(22740)

Question 1142111: If Q is the midpoint of RS, which Of the following must be true?
A)2Rs=QS
B)2QS=RS
C)1/2RQ=RS
D)1/2RS=2RQ
Click here to see answer by Alan3354(69443)

Question 1142210: Packing foam weighs 0.4 KG per cubic meter. If that box measures 2m by 3m by 5m Is filled with packing foam, How much foam will be used?
A)4
B) 6
C) 10
D) 12

I convert 0.4 kg to m = 400
Then, 2X3X5= 30
400/30 =13.3
Click here to see answer by Theo(13342)

Question 1142222: On a numberline, point X is located at -12, point Y is located at -5 and point Z is located atc8. A is the midpoint of XY and B is the midpoint of YZ. What is the midpoint of AB?
Click here to see answer by addingup(3677)

Question 1142218: Amanda bikes 22 miles in 3 hours. Byron bikes three times farther than Amanda, in twice the amount of time. What was Bryons average speed in miles per hour?
A)7
B)11
C)14
D)44
Click here to see answer by josgarithmetic(39617)

Question 1142220: Kaitlyn is tiling her bathroom, which is a rectangle with dimensions 2 yards x 3 yards, if each tile is a square with side length 4 inches And there is no space between tiles, how many tiles will she need to completely cover her bathroom floor?
Click here to see answer by josgarithmetic(39617)

Question 1142207: If 1 gallon of paint covers 300 ft.² of wall what is the fewest number of 1 gallon cans of paint that are needed to cover all four walls of 10 foot by 12 foot bedroom that has 8 foot high ceilings (assume there are no windows or doors)?
A)
B)2
C)3
D)4
Click here to see answer by Boreal(15235)

Question 1142211: A square swimming pool is 10 m long on each side and has a level dept 3 m. It is being filled with water at a rate of 3 m³ per minute. At the same time, a hose is draining water from the pool at the rate of 8 m³ per minute. The pool started to 2/3 full at noon, what is time will it be empty?
A) 12:25 pm
B)12:40 pm
C) 12:55 pm
D) 1:00 pm
Click here to see answer by ikleyn(52781)

Question 1142206: Everyday to avoid traffic driver morning commute, Yunru Takes the back roads from Her home to her workplace. There is less traffic during the afternoon commute home from her workplace so she always takes the highway instead of the backroads. Taking the back roads is 7 miles longer than taking the highway, but her total commute distance is 57 miles long. How many miles long is her morning commute?
A) 25
B)32
C)39
D)43
Click here to see answer by ikleyn(52781)

Question 1142208: To decorate for the holidays, Julie wants to cover a wall in her home with wrapping paper, which is sold by the square yard. What is the minimum amount of wrapping paper, and square yards, will she need in order to cover the wall if the wall measures 18?feet by 24 feet?
A) 48
B)96
C)144
D) 432
Click here to see answer by ikleyn(52781)

Question 1142219: When It is 1 PM Eastern standard time (EST) in Newark, It is 8 AM Hawaiian Alrutian standard time (HAST) in Honolulu.
A plane departs from Newark at 12 PM eastern standard time and lands in Honolulu at 6:00 P.M HAST that same day.
A second plane departs from Honolulu at 7:00 am HAST and travels for the same amount of time as the first plane.
When did the second plane land in Newark?
A)1:00 PM EST
B)7:00 PM EST
C)8:00 PM EST
D)11:00 P.M est

Click here to see answer by Alan3354(69443)

Question 1142217: Samson is running a marathon. He will try to finish the marathon by first running for 45 minutes, then walking for 45 minutes And repeating that pattern until he reaches the finish line. If Samson begun morning at 9 AM, what time will he be in his fourth period of . Walking
A)12:00
B)1:30 pm
C) 2:15 p.m
D)3:00
Click here to see answer by josmiceli(19441)

Question 1142300: Birdseed costs $0.66 a pound and sunflower seeds cost $0.96 a pound. Angela Leinenbachs' pet store wishes to make a 50-pound mixture of birdseed and sunflower seeds that sells for $0.86 per a pound. How many pounds of each type of seed should she use?
Click here to see answer by greenestamps(13200)

Question 1142434: You need to prepare a 30 mL solution of a 1:6 syrup solution. You have on hand a 50% syrup solution, and a 1:200 soda solution. How many mL of each solution do you need to create this final solution?
Click here to see answer by Theo(13342)

Question 1142452: A chemist has two alcohol solutions of different strengths, 30% alcohol and 45% alcohol solutions respectively. how many cubic cm of each must be used so as to make a mixture of 30cc that will contain 39% alcohol?
Click here to see answer by Theo(13342)

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