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# Recent problems solved by 'Alan3354'

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 absolute-value/352639: How do I solve the problem |k|+10=9?1 solutions Answer 252035 by Alan3354(31505)   on 2010-10-06 12:13:47 (Show Source): You can put this solution on YOUR website!Like this one: ------------- |3x| = 9 2 cases: 3x = 9 --> x = 3 and -3x = 9 --> x = -3
 absolute-value/352641: How do I solve the problem 2|3w|=12?1 solutions Answer 252034 by Alan3354(31505)   on 2010-10-06 12:13:24 (Show Source): You can put this solution on YOUR website!Like this one: ------------- |3x| = 9 2 cases: 3x = 9 --> x = 3 and -3x = 9 --> x = -3
 absolute-value/352644: How do I solve the problem |2x+x|=9?1 solutions Answer 252033 by Alan3354(31505)   on 2010-10-06 12:12:51 (Show Source): You can put this solution on YOUR website!------------- |3x| = 9 2 cases: 3x = 9 --> x = 3 and -3x = 9 --> x = -3
 absolute-value/352642: How do I solve the problem 4|7-4|-1=11?1 solutions Answer 252032 by Alan3354(31505)   on 2010-10-06 12:12:28 (Show Source): You can put this solution on YOUR website!Solve for what?
 absolute-value/352645: How do I solve the problem |2g+6|=0?1 solutions Answer 252031 by Alan3354(31505)   on 2010-10-06 12:11:56 (Show Source): You can put this solution on YOUR website!Like this one: ------------- |3x| = 9 2 cases: 3x = 9 --> x = 3 and -3x = 9 --> x = -3
 absolute-value/352643: How do I solve the problem |8d-4d|+5=13?1 solutions Answer 252030 by Alan3354(31505)   on 2010-10-06 12:11:24 (Show Source): You can put this solution on YOUR website!How do I solve the problem |2x+x|=9? ------------- |3x| = 9 2 cases: 3x = 9 --> x = 3 and -3x = 9 --> x = -3
 Mixture_Word_Problems/352633: In the final game of the 2000 basketball season, the Los Angeles Lakers scored 96 of their points on a combination of 43 two-and three-point baskets. How many of each type if shot were made?1 solutions Answer 252029 by Alan3354(31505)   on 2010-10-06 12:09:23 (Show Source): You can put this solution on YOUR website!These are similar problems, 2 things at 2 different values. Do it like this: ----------------------- You have a 1.2% antibiotic cream on the shelf and you have a 3.5 % antibiotic cream on the shelf. How much of each cream should you mix together if you want to obtain 8 ounces of a 1.75% cream? ---------------------- m = 1.2% amount n = 3.5% amount ---------------- m + n = 8 (total mixture) 0.012m + 0.035n = 0.0175*8 (total antibiotic) 2 eqns, 2 variables. Can you finish it?
 Mixture_Word_Problems/352637: You have a 1.2% antibiotic cream on the shelf and you have a 3.5 % antibiotic cream on the shelf. How much of each cream should you mix together if you want to obtain 8 ounces of a 1.75% cream?1 solutions Answer 252028 by Alan3354(31505)   on 2010-10-06 12:00:25 (Show Source): You can put this solution on YOUR website!You have a 1.2% antibiotic cream on the shelf and you have a 3.5 % antibiotic cream on the shelf. How much of each cream should you mix together if you want to obtain 8 ounces of a 1.75% cream? ---------------------- m = 1.2% amount n = 3.5% amount ---------------- m + n = 8 (total mixture) 0.012m + 0.035n = 0.0175*8 (total antibiotic) 2 eqns, 2 variables. Can you finish it?
 Travel_Word_Problems/351959: Karina rode her bike up a mountain trail at an average speed of 4 mph. then she rode back down the trail at an average speed of 20 mph. the entire trip took 3 hours. how far up the mountain did Karina go?1 solutions Answer 252024 by Alan3354(31505)   on 2010-10-06 11:40:00 (Show Source): You can put this solution on YOUR website!Karina rode her bike up a mountain trail at an average speed of 4 mph. then she rode back down the trail at an average speed of 20 mph. the entire trip took 3 hours. how far up the mountain did Karina go? ----------------- t = d/r t = d/4 + d/20 = 3 6d/20 = 3 d = 10 miles
 Travel_Word_Problems/351957: torque left home on his bicycle at 9:00 am traveling at an average rate of 12 mph. at noon, torque's brother set out after him on a motorcycle, following the same route, averaging the 39 mph. How far had torque traveled when his brother caught up?1 solutions Answer 252023 by Alan3354(31505)   on 2010-10-06 11:36:49 (Show Source): You can put this solution on YOUR website!torque left home on his bicycle at 9:00 am traveling at an average rate of 12 mph. at noon, torque's brother set out after him on a motorcycle, following the same route, averaging the 39 mph. How far had torque traveled when his brother caught up? --------------- In 3 hours, torque had gone 36 miles (12 mph * 3 hr) His brother's relative speed is 27 mph (39 - 12 mph) He overtakes him in 36/27 hours = 4/3 hours In 4/3 hours, the brother will go (4/3)*39 miles = 52 miles, obviously the same distance as torque.
 Miscellaneous_Word_Problems/352619: hi, hello, can you help me with this? thanks in advance Admission tickets to a theater were P60 for adults and P25 for children. Receipts for the day showed that 280 persons attended and P14,000 were collected. How many children attended that day?1 solutions Answer 252015 by Alan3354(31505)   on 2010-10-06 11:08:39 (Show Source): You can put this solution on YOUR website!Admission tickets to a theater were P60 for adults and P25 for children. Receipts for the day showed that 280 persons attended and P14,000 were collected. How many children attended that day? --------------------- A = adult tix C = child tix A + C = 280 60A + 25C = 14000 2 eqns, 2 variables. Can you finish it?
 Divisibility_and_Prime_Numbers/352618: What is the greatest common divisor of 96 and 212?1 solutions Answer 252014 by Alan3354(31505)   on 2010-10-06 11:01:36 (Show Source): You can put this solution on YOUR website!Look at it as you would a fraction. 96/212 Then reduce it --> 24/53 It was reduced by a factor of 4. That's the GCD.
 Permutations/352623: How many ways can eight pictures be arranged on a shelf?1 solutions Answer 252013 by Alan3354(31505)   on 2010-10-06 10:56:37 (Show Source): You can put this solution on YOUR website!The 1st is 1 of 8, then 1 of 7, etc. That's 8*7*6*5... = 8! = 40320 ways
 Inequalities/352465: An organization wants to sell a ticket to a concert. It plans on selling 300 reserved-seat tickets1 solutions Answer 252011 by Alan3354(31505)   on 2010-10-06 10:50:48 (Show Source): You can put this solution on YOUR website!It's good to have a plan.
 Triangles/352526: What is the different types of triangles you get? What do you call them eg 45 degrees, 90 degree Triangles etc svanwyk2wesbank.co.za1 solutions Answer 252008 by Alan3354(31505)   on 2010-10-06 10:38:14 (Show Source): You can put this solution on YOUR website!If it has a 90 deg angle, it's a "right triangle." If all sides and angles are equal, it's equilateral and equiangular. If 2 sides and angles are equal, it's isoceles. If no 2 sides are equal, it's scalene. If one angle is greater than 90 degs, it's sometimes called obtuse.
 Travel_Word_Problems/352575: A train leaves the station heading west on the tracks. It takes the train 8 seconds to reach 80 miles per hour. It completes the entire 160 mile trip in two hours. Calculate the train's average speed and velocity over the two hour trip1 solutions Answer 252007 by Alan3354(31505)   on 2010-10-06 10:29:53 (Show Source): You can put this solution on YOUR website!A train leaves the station heading west on the tracks. It takes the train 8 seconds to reach 80 miles per hour. It completes the entire 160 mile trip in two hours. Calculate the train's average speed and velocity over the two hour trip ------------ Speed is a scalar, velocity is a vector. The number is the same: 160 miles/2 hours = 80 mph -------------------------- 0 to 80 in 8 seconds is a lot of acceleration for a train.
 Numeric_Fractions/352461: Can you help me find the slope for: y = -3x + 9 Not sure where to begin with this. Thank yhou.1 solutions Answer 251866 by Alan3354(31505)   on 2010-10-05 22:15:31 (Show Source): You can put this solution on YOUR website!m = -3
 Permutations/352450: The music class has 20 students & the teacher wants them to practice in groups of 5. How many different ways can the first groups of 5 be chosen? we are doing permutations & combinations. I came up with 1,860,480 or 38,760. im not sure which one is the right answer if any.1 solutions Answer 251860 by Alan3354(31505)   on 2010-10-05 21:50:49 (Show Source): You can put this solution on YOUR website!The music class has 20 students & the teacher wants them to practice in groups of 5. How many different ways can the first groups of 5 be chosen? we are doing permutations & combinations. I came up with 1,860,480 or 38,760. im not sure which one is the right answer if any. ----------------------- 20*19*18*17*16 = 1860480 But group ABCDE is the same as ADCEB, so you have to divide by 5! = 120 --> 15504
 Exponential-and-logarithmic-functions/352439: Find an equation of the tangent line at the point indicated. f (x) = log3 (8x + x^-8), x = 1? 1 solutions Answer 251859 by Alan3354(31505)   on 2010-10-05 21:41:27 (Show Source): You can put this solution on YOUR website! f (x) = f(x) = (1/ln(3))*ln(8x + x^-8) f'(x) = (1/ln(3))*(1/(8x + x^-8))*(8 - 8x^-9) @ x = 1: f'(x) = (1/ln(3))*(1/(8 + 1))*(8 - 8) = 0 --------- f(1) = log(3,9) = 2 --> y = 2 is the line tangent at x = 1
 Divisibility_and_Prime_Numbers/352441: what is the divible of 421 solutions Answer 251856 by Alan3354(31505)   on 2010-10-05 21:39:59 (Show Source): You can put this solution on YOUR website!I don't know what that means.
 Volume/352437: R^2 * Pi * H / 1728 = Volume (cu ft). if R is 8 what is the answer?1 solutions Answer 251854 by Alan3354(31505)   on 2010-10-05 21:37:02 (Show Source): You can put this solution on YOUR website!What is the question?
 Permutations/352428: How many possibilities are there for a jumble with 6 letter? I tried this by doing 6x5x4x3x2x1=720 Did I do this right?1 solutions Answer 251850 by Alan3354(31505)   on 2010-10-05 21:32:52 (Show Source): You can put this solution on YOUR website!That's right. It's 6! or 6 factorial.
 Expressions-with-variables/352438: I need the answer to this question.. ASAP!! its like for tommorow morning.. T=2*U/B+E....... SOLVE FOR B... In other terms this says T equals 2 times U over B + E Please and thanks for right answer!1 solutions Answer 251847 by Alan3354(31505)   on 2010-10-05 21:31:19 (Show Source): You can put this solution on YOUR website!T=2*U/B+E....... SOLVE FOR B ---------- Is the denominator B? or B+E ?
 Exponents-negative-and-fractional/352365: Please help me solve this equation: 4x squared to the negative second power. (4x^2)^-2. I came up with 1/16x to the negative fourth power then simplified to 1/16x to the fourth power. Is this correct? 1 solutions Answer 251845 by Alan3354(31505)   on 2010-10-05 21:29:56 (Show Source): You can put this solution on YOUR website!(4x^2)^-2. = That's what it is.
 Finance/352278: how to calculate the average spped of 520kmin8hours and ouestion 2 how to calculate the average speed of 255minutes in 15 sec1 solutions Answer 251823 by Alan3354(31505)   on 2010-10-05 19:35:26 (Show Source): You can put this solution on YOUR website!how to calculate the average spped of 520kmin8hours You have only 2 numbers, what are the possibilities? 520/8 = 65 km/hr -------------- and ouestion 2 how to calculate the average speed of 255minutes in 15 sec I don't know what that means.
 Angles/352287: which three points in the figure are colliner1 solutions Answer 251794 by Alan3354(31505)   on 2010-10-05 17:47:50 (Show Source): You can put this solution on YOUR website!No figure is shown.
 Equations/352162: what is 1 times a number is 10 less than 2 times the number1 solutions Answer 251663 by Alan3354(31505)   on 2010-10-05 13:29:12 (Show Source): You can put this solution on YOUR website!It's a math problem.
 test/352178: Solve 4x+4(2x-1)=201 solutions Answer 251656 by Alan3354(31505)   on 2010-10-05 13:15:06 (Show Source): You can put this solution on YOUR website!4x+4(2x-1)=20 Divide by 4 x + (2x-1) = 5 3x-1 = 5 Add 1 3x = 6 x = 2
 decimal-numbers/352143: How do I convert to decimal notation? 8.01x10^71 solutions Answer 251633 by Alan3354(31505)   on 2010-10-05 12:07:08 (Show Source): You can put this solution on YOUR website!Start with 8.01 and move the decimal point 7 places to the right. Add zeroes as needed. 8.010000000
 Points-lines-and-rays/352129: Give the equation of the line that goes through the point (0,5) and is parallel to the y-axis.1 solutions Answer 251626 by Alan3354(31505)   on 2010-10-05 11:19:51 (Show Source): You can put this solution on YOUR website!That is the y-axis x = 0