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Tutors Answer Your Questions about Expressions-with-variables (FREE)
Question 118937: one watering system needs about 3 times as long to complete a job as another watering system.when both systems operate at the same time,the job can be completed in 9 mins.how long does it take each systemto do the job alone?
Click here to see answer by checkley71(8405)   |
Question 118936: one machine in print shop can prodce a certain number of pages twice as fast as another machine.operating together,these machines can produce this number of pages in 8 mins.how long would it take each machine,working alone,to produce this number of pages?
Click here to see answer by checkley71(8405) |
Question 118897: One hiking club charges $20 to become a memeber and $5 to participate on each hike. Another club charges no mebership fee,but charges $& to participate on each hike. How many hikes must you go on to make the first club more economical?
Click here to see answer by stanbon(26259) |
Question 113644: Determine the surface area and the volume for 5 blocks and 6 blocks.
Number of Blocks Surface area (in square cm) Volume (In cubic cm)
Block 1= 18cm area 4 cm volume
Block 2= 30 cm area 8 cm vol
Block 3= 42 cm area 12 cm vol
Block 4= 54 cm area 16 cm vol
Block 5= 66 cm area 20 cm vol
Block 6= 78 cm area 24 cm vol
Which I have done already. I am now supposed to: write an algebraic expression to represent the relationship between the number of blocks and the surface area of the tower. and use mathematics to justify my answer. What I do know: the surface area with each block adds 12 more cm and with each block added the volume increases by 4 cm, so do the 12 and 4 need to be in the expression and how would I express it?
Click here to see answer by solver91311(5072)  |
Question 119195: I submitted this question earlier but there was a typo I apologize to whoever read it. Here it is again. I need to find out how to solve the following problem using the addition or subtraction property. I need to find the values of x and y in these equations: 9x-2y=15 and 4x+3y=-5. It is very important that I see the work because I want to know exactly how to do it for future problems.
Click here to see answer by jim_thompson5910(13787) |
Question 119192: Alright, here's my question. I need to find out how to solve the following problem using the addition or subtraction property. I need to find the values of x and y in these equations: 9x02y=15 and 4x+3y=-5. It is very important that I see the work because I want to know exactly how to do it for future problems.
Click here to see answer by stanbon(26259) |
Question 119482: Heavens I have tried to solve this problem 4 different times and just can not figure out what I am doing wrong. Please help me.
-7x-24=-26 1/3
I am supposed to have an interger or simplified fraction for x. I had thought the answer was -9
Thank you.
Click here to see answer by Fombitz(2113)  |
Question 119485: Nine pounds of sweet potatoes cost the same as 6 pounds of apples. One pound of sweet potatoes costs twice as much as a pound of onions, while a pound of apples costs 24 cents more than a pound of onions. Find the cost of each.
Click here to see answer by MaxLiebling(13) |
Question 119484: The four oldest people in Golden City have lived a total of 384 years put together. The difference in ages for the youngest and the second oldest is 14. The second youngest is 3 years older than the youngest. The oldest is 20 years older than the average of the second oldest and youngest. What are their ages?
The ages are ____, _____, _____, and _____ .
Click here to see answer by MaxLiebling(13) |
Question 119484: The four oldest people in Golden City have lived a total of 384 years put together. The difference in ages for the youngest and the second oldest is 14. The second youngest is 3 years older than the youngest. The oldest is 20 years older than the average of the second oldest and youngest. What are their ages?
The ages are ____, _____, _____, and _____ .
Click here to see answer by Edwin McCravy(2920) |
Question 119906: Please help me solve this 6-5(3x-3)=-54 I am just brain dead this morning and am not sure about this. I am coming up with no solution but would appreciate a second opinion. Thanks so much for your help.
Click here to see answer by bucky(1732) |
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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
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