Tutors Answer Your Questions about expressions (FREE)
Question 936422: Hi, could someone please help me with this problem? I'm quite stuck.
The trouble for me here relies on the meaning of this symbol: "#" Could you tell me what that means? And moreover, how can or does it apply to the following problem?
Let x#y=2x-3y and x*y=x-y. If x=10 and y=12, evaluate (x#y)*y.
Thank you in advance,
Marcelino
Click here to see answer by ptaylor(2198)   |
Question 936434: Hello, I would like some help here:
"If a*b=a-3b and a#b=2a+3b, evaluate the expression (4*3)#5."
The trouble for me here relies on the meaning of this symbol: "#" Could you tell me what that means? And moreover, how can or does it apply to the problem?
Thank you in advance,
Marcelino
Click here to see answer by srinivas.g(540)  |
Question 936434: Hello, I would like some help here:
"If a*b=a-3b and a#b=2a+3b, evaluate the expression (4*3)#5."
The trouble for me here relies on the meaning of this symbol: "#" Could you tell me what that means? And moreover, how can or does it apply to the problem?
Thank you in advance,
Marcelino
Click here to see answer by josgarithmetic(39623) |
Question 936434: Hello, I would like some help here:
"If a*b=a-3b and a#b=2a+3b, evaluate the expression (4*3)#5."
The trouble for me here relies on the meaning of this symbol: "#" Could you tell me what that means? And moreover, how can or does it apply to the problem?
Thank you in advance,
Marcelino
Click here to see answer by MathLover1(20850)  |
Question 937688: My question is the proper steps to simplify this equation:
((x)/(1-x)) - ((y)/(1-y))
The book's answer is:
((x-y)/(xy-x-y+1))
I got to the middle step,
((x(1-y) - (y(1-x) / (1-x)(1-y))
That's where I get lost.
Any help is appreciated!
Thanks
Click here to see answer by josgarithmetic(39623) |
Question 937688: My question is the proper steps to simplify this equation:
((x)/(1-x)) - ((y)/(1-y))
The book's answer is:
((x-y)/(xy-x-y+1))
I got to the middle step,
((x(1-y) - (y(1-x) / (1-x)(1-y))
That's where I get lost.
Any help is appreciated!
Thanks
Click here to see answer by MathLover1(20850) |
Question 937688: My question is the proper steps to simplify this equation:
((x)/(1-x)) - ((y)/(1-y))
The book's answer is:
((x-y)/(xy-x-y+1))
I got to the middle step,
((x(1-y) - (y(1-x) / (1-x)(1-y))
That's where I get lost.
Any help is appreciated!
Thanks
Click here to see answer by rothauserc(4718)  |
Question 938102: Mary wants to buy one large pizza, one medium pizza, and three drinks. The drinks cost p dollars each, the medium pizza cost two times as much as one drink, and the large pizza costs three times as much as one drink. If Mary started with 30 dollars, how much money would she have left after making all of her purchases? Give your answer as an expression of p.
Click here to see answer by Stitch(470) |
Question 938400: there are 9 pieces of paper in a bowl numbered 1 through 9. first, you remove all pieces of paper that contain a number that divides 36 evenly. then you remove all pieces of paper that contain a prime number. what is the number on the piece of paper that is still in the bowl.
Click here to see answer by ewatrrr(24785)  |
Question 938398: raul has 6 large marbles and 14 small marbles. one large marble weighs the same as 3 small marbles. if the weight of all 20 marbles is 80 ounces, then the weight of 2 large marbles plus 4 small marbles is how many ounces.
Click here to see answer by ewatrrr(24785) |
Question 939087: In a different dimension, cows have x+3 legs, with 3 toes on each leg. Chickens have 2x-4 legs, with 7 toes on each leg. If your farm has only two cows and one chicken, what is the expression for how many animal toes are there in total (not including yours)?
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, 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
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