Tutors Answer Your Questions about expressions (FREE)
Question 31757: I am an old student in College Algebra and I have tried and tried to solve these Compositions of Functions.
Your help with the following problems would be greatly appreciated:
Find g(f(x))if g(x)=sqrt(2x+3) and f(x)=4x-3.
Find h(f(x)) if h(x)=1/x+2 and f(x)=4x-3
Any thing you can provide would be a great assistance to an old woman.
Click here to see answer by venugopalramana(3286)  |
Question 32565: I hope this is the title this problem should be under. I have a question on a word problem below
1. A boat takes 3hrs to go 24 miles upstream. It can go 36 miles downstream in the same time. Find the speed of the boat (still water) and the speed of the current. bonus: how far downstream does a styrofoam cup float in 3 hours?
- I know I need to set it up with x= something and y= something but I can't figure out what goes where.
Click here to see answer by stanbon(75887) |
Question 32851: oneday 45 frogs were captured from a pond, marked and then returned to the pond.
The next day, 40 frogs were observed in the pond,of which 10 had been marked the previous day. Assuming the marked frogs are equally distributed among all the frogs in the pond, what is the best estimate of how many frogs live in the pond?
Click here to see answer by khwang(438) |
Question 33209: A three digit number multiplied by a three digit number is equal to the product of 67,392. What are the two sets of three digits that can give you 67,392 when multiplied? Or what equstion can be usd to solve problem? My son has this problem for homework and is unable to derive the answer. Can you help us?
Thanks so much for your assistance.
Dee
Click here to see answer by venugopalramana(3286) |
Question 34459: Joe has a collection of nickels and dimes that is worth $5.65. If the number of dimes were doubled and the number of nickels were increased by 8, the value of the coins would be $10.45. How many dimes does he have?
Click here to see answer by mukhopadhyay(490) |
Question 34459: Joe has a collection of nickels and dimes that is worth $5.65. If the number of dimes were doubled and the number of nickels were increased by 8, the value of the coins would be $10.45. How many dimes does he have?
Click here to see answer by stanbon(75887) |
Question 34458: An express and local train leave GraysLake at 3 P.M. and head for Chicago 50 miles away. The express travels twice as fast as the local and arrives 1 hour ahead of the local. Find the speed of each train.
Click here to see answer by Prithwis(166) |
Question 34607: For the system of linear equations in questions 1
- Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
3x + 7y = 3 and 12x + 28y = 16
Click here to see answer by checkley71(8403) |
Question 34905: I need to know some properties to help simplify different expressions such as:
4a+2=, 4x+x+6y-3x=, 4*3g+2(g+6k)=, 12(a+3b+6c)=
I am working on 30 different problems with nothing to guide me. I have no textbook, just a sheet of paper with Pre-Algebra problems.
Can you please give me some rules or something to follow?
Thank you, Becki Ritter
Click here to see answer by lyra(94)  |
Question 35743: Simply: (2 -3x)^2 I need to really understand how they came up with the answer to this one, I have my final tomorrwo. Th e other problem is find the y intercept for 2x - 3y =6. Thank you so very much for any help. Thank you Thank you.
Click here to see answer by rapaljer(4671)  |
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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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