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 Points-lines-and-rays/719739: The y- intercepts of the equation 3x – 4y = 12 is the point.1 solutions Answer 441470 by Alan3354(30993)   on 2013-02-27 14:15:29 (Show Source): You can put this solution on YOUR website!The y- intercepts of the equation 3x – 4y = 12 is the point. ------------- Thx for letting us know.
 test/719721: A cruise ship is moving N 200 E at 20 mph against a current moving 3 mph at S 300 E. What will the actual direction and magnitude be? 1 solutions Answer 441469 by Alan3354(30993)   on 2013-02-27 14:14:19 (Show Source): You can put this solution on YOUR website!A cruise ship is moving N 200 E at 20 mph against a current moving 3 mph at S 300 E. What will the actual direction and magnitude be? -------- What is N 200 E? What is S 300 E?
 Travel_Word_Problems/719719: if the speed of a cyclist is 100 metres per second how much distance will he travel in 15 minutes1 solutions Answer 441466 by Alan3354(30993)   on 2013-02-27 14:02:05 (Show Source): You can put this solution on YOUR website!if the speed of a cyclist is 100 metres per second how much distance will he travel in 15 minutes ------------------- 15 minutes = 900 seconds d = r*t
 Quadratic_Equations/719735: Solve the quadratic 5x2 + 90 = 101 solutions Answer 441465 by Alan3354(30993)   on 2013-02-27 14:00:14 (Show Source): You can put this solution on YOUR website!Solve the quadratic 5x2 + 90 = 10 --------- 5x^2 = -80 x^2 = -16 x = ± 4i
 Circles/719633: find the (h,k) and radius r for the equation 4(x-5)^2+4y^2=16. What are the intercepts?1 solutions Answer 441438 by Alan3354(30993)   on 2013-02-27 09:58:20 (Show Source): You can put this solution on YOUR website!find the (h,k) and radius r for the equation 4(x-5)^2+4y^2=16. (x-5)^2 + y^2 = 4 (h,k) = (5,0) the center r^2 = 4 --> r = 2 -------- What are the intercepts? (x-5)^2 + y^2 = 4 y=0: --> (x-5)^2 = 4 x - 5 = 2 x = 7 --> (7,0) --- x-5 = -2 x = 4 --> (3,0) --- x=0: --> 25 + y^2 = 4 y^2 = -21 --> no y-intercepts
 percentage/719660: If a speed increased from 4 minutes to 96 minutes, what is the percentage of increase? 1 solutions Answer 441434 by Alan3354(30993)   on 2013-02-27 09:51:16 (Show Source): You can put this solution on YOUR website!If a speed increased from 4 minutes to 96 minutes, what is the percentage of increase? ----------------- Minutes are not units of speed. ---- An increase from 4 to 96 is an increase of 92 92/4 = 23 --> 2300% ------ Note that it's 23 times more, 24 times as much.
 percentage/719629: what is 2 1/3 expressed as a percent?1 solutions Answer 441432 by Alan3354(30993)   on 2013-02-27 09:44:38 (Show Source): You can put this solution on YOUR website!what is 2 1/3 expressed as a percent? --------- It's 2 1/3 times 100% = 233.333... %
 Expressions-with-variables/719655: how do you solve this equation 4x-7y=101 solutions Answer 441431 by Alan3354(30993)   on 2013-02-27 09:41:25 (Show Source): You can put this solution on YOUR website!how do you solve this equation 4x-7y=10 ------------- Solve it for what?
 Word_Problems_With_Coins/719528: You have a jar of pennies and quarters. You want to choose 15 coins worth exactly \$4.35.1 solutions Answer 441430 by Alan3354(30993)   on 2013-02-27 09:40:44 (Show Source): You can put this solution on YOUR website!You have a jar of pennies and quarters. You want to choose 15 coins worth exactly \$4.35. ------------------- 15 quarters = \$3.75 Any other combination would be less than \$3.75
 Travel_Word_Problems/719654: You can ride a bike at 15 mph. Your sister rides 12 mph. You give her a one-hour head start. In how many hours will you catch up if neither of you stops. (15 + x) (12 + x) 15x - 12x In 2 hours1 solutions Answer 441428 by Alan3354(30993)   on 2013-02-27 09:36:07 (Show Source): You can put this solution on YOUR website!You can ride a bike at 15 mph. Your sister rides 12 mph. You give her a one-hour head start. In how many hours will you catch up if neither of you stops. (15 + x) (12 + x) 15x - 12x In 2 hours --------------- In 1 hour, she's 12 miles away (12*1) You "gain on her" at 3 mi/hr (15-12) --- t = d/r = 12/3 = 4 hours
 Pythagorean-theorem/719640: a right triangle has one leg of 29 length and one leg of 12 length, what is the angle measure of the angle farthest from the right angle?1 solutions Answer 441425 by Alan3354(30993)   on 2013-02-27 09:33:43 (Show Source): You can put this solution on YOUR website!a right triangle has one leg of 29 length and one leg of 12 length, what is the angle measure of the angle farthest from the right angle? ---------------- The right angle is C, the others are A & B ---- A = atan(12/29) =~ 22.479 degs B = 90 - A =~ 67.52 degs
 Linear-equations/719614: Determine whether the lines through the given pairs of points are parallel. A (2, - 3), B (- 2, - 11) and C (1, 2), D (- 1, 6)1 solutions Answer 441424 by Alan3354(30993)   on 2013-02-27 09:28:38 (Show Source): You can put this solution on YOUR website!Determine whether the lines through the given pairs of points are parallel. A (2, - 3), B (- 2, - 11) and C (1, 2), D (- 1, 6) --------------- Find the slopes. If, and only if, the slopes are equal, they're parallel. --- For AB: A (2,- 3), B (- 2,- 11) slope m = diffy/diffx m = -8/(-4) = 2 ------------------- Find the slope of CD, compare them. =============== PS Don't put a space after the comma in the points. (1,2) not (1, 2)
 Linear-equations/719645: elimination method -x-y=9 4x-y=-211 solutions Answer 441422 by Alan3354(30993)   on 2013-02-27 09:24:40 (Show Source): You can put this solution on YOUR website!elimination method -x-y=9 4x-y=-21 ------------ Subtract
 Trigonometry-basics/719441: if tan theta=12/5 what is the value of sin theta^2 + cos^2 theta1 solutions Answer 441346 by Alan3354(30993)   on 2013-02-26 20:35:19 (Show Source): You can put this solution on YOUR website!if tan theta=12/5 what is the value of sin theta^2 + cos^2 theta ------------ do you mean sin(theta^2)? or sin^2(theta)?
 Graphs/719422: how can you solve, (-6)^2+4(-6)=51 solutions Answer 441344 by Alan3354(30993)   on 2013-02-26 20:11:13 (Show Source): You can put this solution on YOUR website!how can you solve, (-6)^2+4(-6)=5 -------------- Since there's no variable, there's nothing to solve. =========== (-6)^2+4(-6)=5 36 - 24 = 5 12 = 5 not a true statement. ------------- Did you leave something out?
 Travel_Word_Problems/719424: I need help with math expressions. if a bus leaves a station that is 357 miles from Chicago and travels toward Chicago at a rate of 50 mph? Thank you :) 1 solutions Answer 441343 by Alan3354(30993)   on 2013-02-26 20:09:00 (Show Source): You can put this solution on YOUR website!if a bus leaves a station that is 357 miles from Chicago and travels toward Chicago at a rate of 50 mph? ------------- You didn't ask a question. What do you want to know?
 pythagorean/719434: i need help with a question that said find the missing side if a= 81 b=? and c=225. I squared it out and moved the square of 81 which is 6561 over to the square of 225 which is 50625 and added it and got 57186. I used the square root key and got 239.14 and got it wrong. I need help please round to the nearest percent.1 solutions Answer 441342 by Alan3354(30993)   on 2013-02-26 20:07:03 (Show Source): You can put this solution on YOUR website!a= 81 b=? and c=225. --------------- Assuming it's a right triangle, and that c is the hypotenuse, =~ 209.9143
 Numeric_Fractions/719388: How do I solve x/5+4=16?1 solutions Answer 441340 by Alan3354(30993)   on 2013-02-26 19:05:27 (Show Source): You can put this solution on YOUR website!How do I solve x/5+4=16? -------------- Subtract 4 Multiply by 5
 Exponential-and-logarithmic-functions/719397: Can you please help me solve: 2.9^a-4 =8.1 ?1 solutions Answer 441339 by Alan3354(30993)   on 2013-02-26 19:04:35 (Show Source): You can put this solution on YOUR website!2.9^a-4 =8.1 Add 4 2.9^a = 12.1 --- a*log(2.9) = log(12.1) a = log(12.1)/log(2.9)
 logarithm/719389: I need to figure out how to write an expression as a single logarithm 1 solutions Answer 441333 by Alan3354(30993)   on 2013-02-26 18:51:23 (Show Source): You can put this solution on YOUR website!I need to figure out how to write an expression as a single logarithm ------------------ They're all the same base. When the logs are added --> multiplied. When the logs are subtracted --> divided. ------ That's how you do it.
 Quadratic_Equations/719356: x^2-4x-60=01 solutions Answer 441328 by Alan3354(30993)   on 2013-02-26 18:27:19 (Show Source): You can put this solution on YOUR website!x^2-4x-60=0 ------------- It can be factored. The form is (x + a)*(x + b) = 0 Since c is negative (the -60) the signs of a & b are different. The sum of a & b (one is negative) = -4
 test/719360: 51 solutions Answer 441326 by Alan3354(30993)   on 2013-02-26 18:24:19 (Show Source): You can put this solution on YOUR website!5 < x < 13 ============= Do you have a question?
 logarithm/719267: Please help me with this problem This is what i have so far (((log (2,x)+log(x)=11))) (((log((2x)x)=(11))) 1 solutions Answer 441283 by Alan3354(30993)   on 2013-02-26 16:04:19 (Show Source): You can put this solution on YOUR website!log (2,x)+log(x)=11 Is it 2 different bases? ---- w/o formatting: x = 10^(11/(1 + 1/log(2))) x =~ 350.8814
 Travel_Word_Problems/719230: I can walk 5.5 km per hour, how many hours will it take me to walk 33 km?1 solutions Answer 441282 by Alan3354(30993)   on 2013-02-26 16:02:18 (Show Source): You can put this solution on YOUR website!I can walk 5.5 km per hour, how many hours will it take me to walk 33 km? -------------------- d = r*t t = d/r
 Complex_Numbers/719099: plz solve this problem for me_ Show that the points 3+2i,2-i,1+i,4+i lies on a circle. Find its center and radius.1 solutions Answer 441211 by Alan3354(30993)   on 2013-02-26 11:17:43 (Show Source): You can put this solution on YOUR website!Show that the points 3+2i,2-i,1+i,4+i lies on a circle. Find its center and radius. ================ Plot the points on the x-y plane, A(3,2), B(2,-1), C(1,1) & D(4,1) Check that no 3 of the points are colinear by finding the slopes of DA, AB, BC & CD (going in order of xes) ----- Any 3 non-colinear points define a circle. Get the equations of the perpendicular bisectors of 2 lines, AB & BC will do. The intersection of the bisectors is the center of the circle. The distance from the center to any of the A, B or C is the radius. ---------- Check that point D is on the circle.
 Polygons/719107: a regular polygon has 14 sides. what is the measure of each vertex? 1 solutions Answer 441203 by Alan3354(30993)   on 2013-02-26 09:19:40 (Show Source): You can put this solution on YOUR website!a regular polygon has 14 sides. what is the measure of each vertex? ------------- The sum of external angles is always 360 degs Each ext angle = 360/14 = 180/7 degs Internal angles = 180 - 180/7 = 1080/7 degs =~ 154.286 degs
 Equations/718960: What does x equal when finding coordinates?1 solutions Answer 441134 by Alan3354(30993)   on 2013-02-25 21:08:52 (Show Source): You can put this solution on YOUR website!What does x equal when finding coordinates? --------- It's the distance from the y-axis.
 Exponents/718900: HIIIIIIIIIIA!!!! okso br0 i need help on math ye kno m8 kso the question is: WHATS THE ANSWER FOR: s to the power of 3 ova (/) t to the power of 5 broo like help cuz im in deep truble if i dnt do this ye kno br0 kso explain it well my man u nigga ass math wizrds need 2 help ur bro in the hood ye kno btw i aint doing this for the lulzzzz i need legt halp on math thnx!!!! i luv u if u help a nigga in da need ye kno br0 this aint for the lulz dnt worry jst rply thnx!!!!!!!!! #swag #iNeedHelp i'd really appreciate yur help m8 thnx gd night1 solutions Answer 441126 by Alan3354(30993)   on 2013-02-25 20:25:42 (Show Source): You can put this solution on YOUR website!WHATS THE ANSWER FOR: s to the power of 3 ova (/) t to the power of 5 ----------- = That's all you can do with that. --------- Unless you mean
 Linear_Equations_And_Systems_Word_Problems/718904: A ladder that is 13 feet long is 5 feet from the base of a wall. How far up the wall does the ladder reach?1 solutions Answer 441124 by Alan3354(30993)   on 2013-02-25 20:22:24 (Show Source): You can put this solution on YOUR website!A ladder that is 13 feet long is 5 feet from the base of a wall. How far up the wall does the ladder reach? ------------- Use Pythagoras
 Exponential-and-logarithmic-functions/718875: log x - log 10 = 14. Solve for X1 solutions Answer 441123 by Alan3354(30993)   on 2013-02-25 20:21:22 (Show Source): You can put this solution on YOUR website!log x - log 10 = 14. Solve for X log x - 1 = 14 log(x) = 15
 Angles/718894: what is the difference between an acute,obtuse and right angle?1 solutions Answer 441116 by Alan3354(30993)   on 2013-02-25 20:03:05 (Show Source): You can put this solution on YOUR website!what is the difference between an acute,obtuse and right angle? ------- acute < 90 degs obtuse > 90 degs right = 90 degs