Tutors Answer Your Questions about expressions (FREE)
Question 985301: I already typed this question into cymath.com and got an answer... however... I need all the steps to understand what is happening.
x^2/(x^2-4) - (x+1)/(x+2)
It says to cross multiply, how do you even do that?????
Thanks.
Click here to see answer by MathTherapy(10555)  |
Question 985399: What can I do I need two of each with 12, 11 and 15 I already did ne with 12 and I need to use all of these numbers 18, 2, 3 and 4 I an use (), -, +, multiplication and division, ^2 and ^3. the one i did with 12 is 18-(2^3/4) * 3
Thanks.
Click here to see answer by macston(5194)  |
Question 985770: WIRELESS PHONE Spinfrog wireless
phone company bills on a monthly basis.
Each bill includes a $50.00 service fee for
1000 minutes. Additionally, there is
a charge of $0.25 for each minute used
over 1000. Let m represent the number
of minutes over 1000 used during the
month. Write an equation to describe the
cost c of the wireless phone service per
month.
Click here to see answer by stanbon(75887) |
Question 985803: 3*4^2-2^3-3^2=23
We were asked to put grouping symbols in this problem to make it true. I have tried every group of parentheses, left the exponents outside of parentheses and I am at my wits end. Just when I think I have it and something makes sense it does not equal 23. Please help
Click here to see answer by macston(5194)  |
Question 987971: For the following I have an answer of 75
84-18/9-32x5-3
Multiplication first 32 x 5
Division of 18/9
Then worked left to right
84-2-160-3
Yet the answer is -81
Would you please show me where I am going wrong.
Thank you
Click here to see answer by Alan3354(69443)  |
Question 988499: TechWiz Electronics makes a profit of $35 for each MP3 player sold and $18 for each DVD player sold. Last week, TechWiz sold a combined total of 130 MP3 and DVD players. Let x be the number of MP3 players TechWiz sold last week. Write an expression for the combined total profit (in dollars) TechWiz made from MP3 and DVD players last week.
Click here to see answer by macston(5194)  |
Question 988995: 1.)When the expression x^3+mx^2+nx-5 is divided by x+2 and x+3, the remainders are 2 and 13 respectively. Find the values of m and n.
2)When P(x)=x^2+ax-b is divided by x-1, the remainder is 6. When P(x) is divided by x+2, the remainder is 3. Find the values of a and b.
Please help me and thank you
Click here to see answer by KMST(5328)  |
Question 989034: Finding first expression
Determine the frist expression to evaluate In each problem
Ex) 5+(8×5)+72÷8. Answer for this is 8×5
1)5+9+10+16÷4
So what at I'm trying to figure out is what do I have to do please help me
Click here to see answer by stanbon(75887) |
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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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