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 Inequalities/675798: my problem is solve and check each equation. Begin your work by rewriting each equation without fractions. x/5-4=-6 WHAT???1 solutions Answer 420062 by Alan3354(31538)   on 2012-11-04 16:20:35 (Show Source): You can put this solution on YOUR website!solve and check each equation. Begin your work by rewriting each equation without fractions. x/5 - 4 = -6 Begin your work by rewriting each equation without fractions. Mupltiply thru by 5 to eliminate fractions. x - 20 = -30 Add 20 -------------- Is that so hard?
 Travel_Word_Problems/675768: Sam leaves for the store on his skateboard at 8 mph. His skateboard breaks when he gets to the store, so he immediately goes home at a speed of 4 mph. What is the round trip distance if it took 2 hours?1 solutions Answer 420061 by Alan3354(31538)   on 2012-11-04 16:12:00 (Show Source): You can put this solution on YOUR website!Sam leaves for the store on his skateboard at 8 mph. His skateboard breaks when he gets to the store, so he immediately goes home at a speed of 4 mph. What is the round trip distance if it took 2 hours? --------------- Avg speed for the round trip = 2*8*4/(8+4) = 64/12 Avg = 16/3 mi/hr d = r*t = 2*16/3 RT distance = 32/3 miles
 Travel_Word_Problems/675790: A truck was able to average only 40 mph for the first 4 hours of a delivery route. How long must the driver travel at a speed of 55 mph to average 50 mph for the trip?1 solutions Answer 420060 by Alan3354(31538)   on 2012-11-04 16:08:33 (Show Source): You can put this solution on YOUR website!A truck was able to average only 40 mph for the first 4 hours of a delivery route. How long must the driver travel at a speed of 55 mph to average 50 mph for the trip? ------------------------- d = r*t r = d/t r = (40*4 + 55t)/(t+4) = 50 ..... (t = time at 55 mi/hr) 55t + 160 = 50t + 200 t = 8 hours at 55 mi/hr
 test/675756: I need to solve this by factoring and show my work (y-2/3)^2=4/91 solutions Answer 420058 by Alan3354(31538)   on 2012-11-04 16:00:07 (Show Source): You can put this solution on YOUR website!I need to solve this by factoring and show my work (y-2/3)^2=4/9 ------------------ Get the square root of both sides. y-2/3 = 2/3 and y-2/3 = -2/3
 Expressions-with-variables/675683: what is 5x-5 1 solutions Answer 420003 by Alan3354(31538)   on 2012-11-04 13:35:40 (Show Source): You can put this solution on YOUR website!what is 5x-5 -------------- It's a binomial.
 Travel_Word_Problems/675667: A car is driving at a speed of 0.5/50(please do with .5 and 50) miles per hour. what is the speed of the car in ft per min. the answer is 3,960 feet per minute. i just don't know how to work it out. 1 solutions Answer 419987 by Alan3354(31538)   on 2012-11-04 10:45:26 (Show Source): You can put this solution on YOUR website!A car is driving at a speed of 0.5/50(please do with .5 and 50) miles per hour. what is the speed of the car in ft per min. the answer is 3,960 feet per minute. ------------- I don't know what 0.5/50 mi/hr means, but 3960 ft/min = 3960*15/(22*60) mi/hr = 45 mi/hr
 Numbers_Word_Problems/675663: Find the greatest possible pair of integers such that one integer is 3 more than twice the other and their sum is less than 42. 1 solutions Answer 419986 by Alan3354(31538)   on 2012-11-04 10:42:00 (Show Source): You can put this solution on YOUR website!Find the greatest possible pair of integers such that one integer is 3 more than twice the other and their sum is less than 42. ---------------- n + 2n+3 < 42 3n + 3 < 42 3n < 39 n < 13 --> 12 & 27 12 + 27 = 39 ============ The next greater pair is 13 & 29 13 + 29 = 42 (not less than 42, doesn't work)
 Polygons/675654: A regular polygon has 39 sides.what is the size of each interior angle?1 solutions Answer 419985 by Alan3354(31538)   on 2012-11-04 10:37:34 (Show Source): You can put this solution on YOUR website!A regular polygon has 39 sides.what is the size of each interior angle? -------------- The sum = 180*(n-2) = 180*37 = 6660 degs Each angle = 6660/39 = 2220/13 degs =~ 170.769 degs ------------------- Or do it this way. Each exterior angle = 360/39 = 120/13 degs Int = 180 - Ext = 2220/13 degs
 Polygons/675655: Each exterior angle of a regular polygon is 12 how many sides does the polygon have?1 solutions Answer 419984 by Alan3354(31538)   on 2012-11-04 10:34:53 (Show Source): You can put this solution on YOUR website!Each exterior angle of a regular polygon is 12 how many sides does the polygon have? -------------- The sum of exterior angles for ALL polygons is 360 degs 360/12 = 30 sides
 test/675661: How do I graph the equation 2x+5y=10? 1 solutions Answer 419980 by Alan3354(31538)   on 2012-11-04 10:14:06 (Show Source): You can put this solution on YOUR website!How do I graph the equation 2x+5y=10? ----------------- It's a straight line, so you need 2 points. Easiest way to find 2 points is to set x=0, find y. Then y=0, find x. Plot the 2 points. Draw a line thru them.
 Rational-functions/675599: what are the factors of m^2+n^2 1 solutions Answer 419976 by Alan3354(31538)   on 2012-11-04 09:49:03 (Show Source): You can put this solution on YOUR website!what are the factors of m^2+n^2 -------------- That can't be factored. It's prime.
 Travel_Word_Problems/675627: Anna took her scooter and headed to the beach driving 20 mph. Breanna left two hours later and also headed to the beach on her scooter driving 20 mph. How many hours did Anna drive before Breanna caught up with her?1 solutions Answer 419975 by Alan3354(31538)   on 2012-11-04 09:47:47 (Show Source): You can put this solution on YOUR website!Anna took her scooter and headed to the beach driving 20 mph. Breanna left two hours later and also headed to the beach on her scooter driving 20 mph. How many hours did Anna drive before Breanna ====================== She would "catch up" when they're both at the beach, ie, when Anna has been stopped for 2 hours.
 Percentage-and-ratio-word-problems/675657: How much is 1/8 by two1 solutions Answer 419974 by Alan3354(31538)   on 2012-11-04 09:45:42 (Show Source): You can put this solution on YOUR website!How much is 1/8 by two ------------- What do you mean? Area? Divide by 2?
 Linear-equations/675572: If a line has the points (4,y) and (16,8), with a slope of -2/3, what is y?1 solutions Answer 419930 by Alan3354(31538)   on 2012-11-03 22:50:33 (Show Source): You can put this solution on YOUR website!If a line has the points (4,y) and (16,8), with a slope of -2/3, what is y? -------------------- Slope, m = diffy/diffx = (y-8)/(4-16) = -2/3 (y-8)/12 = -2/3 3(y-8) = -24 y-8 = -8 y = 0
 Percentage-and-ratio-word-problems/675576: The ratio of dogs to cats is 3:4. How many cats were there?1 solutions Answer 419929 by Alan3354(31538)   on 2012-11-03 22:44:04 (Show Source): You can put this solution on YOUR website!The ratio of dogs to cats is 3:4. How many cats were there? At least 4.
 real-numbers/675548: for the function y=1^x, make a table with integer values of x from 0 to 4.then graph the function.does the graph show exponential growth, exponential decay or neither?explain your thinking. 1 solutions Answer 419924 by Alan3354(31538)   on 2012-11-03 21:34:24 (Show Source): You can put this solution on YOUR website!for the function y=1^x, make a table with integer values of x from 0 to 4.then graph the function.does the graph show exponential growth, exponential decay or neither?explain your thinking. ------------- 1^x = 1 for all values of x.
 Miscellaneous_Word_Problems/675561: you skate am average speed of 7 miles per hour. The number of m miles you skate during h hours is modeled by m=7h. Do these two quantities have direct variation. Explain1 solutions Answer 419923 by Alan3354(31538)   on 2012-11-03 21:32:38 (Show Source): You can put this solution on YOUR website!you skate am average speed of 7 miles per hour. The number of m miles you skate during h hours is modeled by m=7h. Do these two quantities have direct variation. Explain ----------- They do. As h increases, m increases.
 Quadratic_Equations/675556: Write a quadratic equation having the given solutions: -7, 81 solutions Answer 419922 by Alan3354(31538)   on 2012-11-03 21:31:38 (Show Source): You can put this solution on YOUR website!Write a quadratic equation having the given solutions: -7, 8 ----------- If the solutions are a & b, then (x-a)*(x-b) = 0
 Quadratic_Equations/675558: Find the discriminative: 6x-11x-10=01 solutions Answer 419921 by Alan3354(31538)   on 2012-11-03 21:30:35 (Show Source): You can put this solution on YOUR website!Find the discriminative: 6x-11x-10=0 ============== There's no x^2 term. BTW, it's discrminant.
 Polygons/675545: If each exterior angle equals to 180, what is the sum of the interior angle?1 solutions Answer 419916 by Alan3354(31538)   on 2012-11-03 21:00:50 (Show Source): You can put this solution on YOUR website!If each exterior angle equals to 180, what is the sum of the interior angle? ---------- That's a straight, so there are no interior angles.
 Inequalities/675510: 38=30-2(x-1) i tried 38=30-2x-2 38=32-2x 38 -32=6 6 divided by -2 = -3 i think its wrong please help :(1 solutions Answer 419914 by Alan3354(31538)   on 2012-11-03 20:54:11 (Show Source): You can put this solution on YOUR website!38=30-2(x-1) i tried 38=30-2x-2 ******** Should be 30 - 2x+2 38=32-2x ********* You made a 2nd mistake that canceled your 1st mistake. 38 -32=6 6 divided by -2 = -3 i think its wrong please help :(
 Average/675539: A student scores an 84, 85, and 88 on her first three exams. What must she score on her fourth exam to raise her average to 89? 1 solutions Answer 419912 by Alan3354(31538)   on 2012-11-03 20:48:58 (Show Source): You can put this solution on YOUR website!A student scores an 84, 85, and 88 on her first three exams. What must she score on her fourth exam to raise her average to 89? 4*89 = 356 --- 84 + 85 + 88 + Score = 356
 logarithm/675541: f(1)=29+48.8log(1+1) how do i graph this 1 solutions Answer 419910 by Alan3354(31538)   on 2012-11-03 20:48:00 (Show Source): You can put this solution on YOUR website!f(1)=29+48.8log(1+1) how do i graph this ------------ There are no variables, nothing to graph.
 Miscellaneous_Word_Problems/675522: Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is, the pressure is (kilopascals). What is the volume when the pressure is ?1 solutions Answer 419906 by Alan3354(31538)   on 2012-11-03 20:38:56 (Show Source): You can put this solution on YOUR website!Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is, the pressure is (kilopascals). What is the volume when the pressure is ? -------------- PV = k Add numbers
 Quadratic-relations-and-conic-sections/675500: value of x? x=3^-x=61 solutions Answer 419903 by Alan3354(31538)   on 2012-11-03 20:28:50 (Show Source): You can put this solution on YOUR website!value of x? x=3^-x=6 ================== Too many equal signs. (Not the ones I typed)
 test/675523: Wheeling has 37,812 people living in it. How many years will it take for wheeling at a current 0.9% annual growth rate1 solutions Answer 419902 by Alan3354(31538)   on 2012-11-03 20:27:08 (Show Source): You can put this solution on YOUR website!Wheeling has 37,812 people living in it. How many years will it take for wheeling at a current 0.9% annual growth rate ----------- To do what?
 Trigonometry-basics/675531: solve the equation on the interval [0,2pi) 3cos(x)+6√(3)=cos(x)+5√(3)1 solutions Answer 419901 by Alan3354(31538)   on 2012-11-03 20:25:52 (Show Source): You can put this solution on YOUR website!3cos(x)+6√(3)=cos(x)+5√(3) --------------- x = 5pi/6, 7pi/6
 test/675427: Im in 5th grade and i want to pass1 solutions Answer 419834 by Alan3354(31538)   on 2012-11-03 14:28:44 (Show Source): You can put this solution on YOUR website!I was in the 5th grade myself once. I did pass to the 6th.
 test/675426: Can u help me1 solutions Answer 419829 by Alan3354(31538)   on 2012-11-03 14:16:39 (Show Source): You can put this solution on YOUR website!Can u help me ----------- I can send you \$5.
 Travel_Word_Problems/675425: how long does it take a scooter at 45km/h to travel 9.8km1 solutions Answer 419828 by Alan3354(31538)   on 2012-11-03 14:14:30 (Show Source): You can put this solution on YOUR website!how long does it take a scooter at 45km/h to travel 9.8km -------- d = r*t t = d/r
 �t�e�s�t/675406: What are the three numbers such that their product is prime and the difference between second and first is equal to the difference between third and second? Provide the solution, please... 1 solutions Answer 419827 by Alan3354(31538)   on 2012-11-03 14:13:56 (Show Source): You can put this solution on YOUR website!What are the three numbers such that their product is prime ------------------ No such numbers. The product has the 3 numbers as factors, so it's not prime.