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 Unit_Conversion_Word_Problems/348944: if you ran 100 yards in 9.8 seconds how fast were you going in miles per hour?1 solutions Answer 249550 by ankor@dixie-net.com(15746)   on 2010-09-28 09:49:10 (Show Source): You can put this solution on YOUR website!100 yards in 9.8 seconds how fast were you going in miles per hour? : Find yds/sec: 10.20408 yds/sec : Find mph = 6.957 mph I realized that I screwed this one up yesterday, but then it slipped my mind til now. Of course they are using yards here and there are 1760 yds in a mile, it should be: Find mph = 20.872 mph : I apologize for the mistake. Carl
 Rectangles/348912: Where to start on how to solve the formula: the perimeter of a rectangle garden is 74 yards the width of the garden is two yards less than twice the length. find the width and length?1 solutions Answer 249546 by ankor@dixie-net.com(15746)   on 2010-09-28 09:38:19 (Show Source): You can put this solution on YOUR website!Where to start on how to solve the formula: the perimeter of a rectangle garden is 74 yards the width of the garden is two yards less than twice the length. find the width and length? : Start with the perimeter formula 2L + 2W = 74 simplify, divide by 2 L + W = 37 : "the width of the garden is two yards less than twice the length." W = (L - 2) : Using our simplified perimeter formula, replace W with (L-2) L + (L-2) = 37 2L = 37 + 2 2L = 39 L = L = 19.5 : Find W: W = L - 2 W = 19.5 - 2 W = 17.5 : : Confirm this in the original perimeter formula 2(19.5) + 2(17.5) = 39 + 35 = 74
 Expressions-with-variables/348991: Perform the indicated operations and simplify. (x+5)(x-3)/x+2 times 1/(x+5)(x+2) I multiplied right across and I got (x+5)(x-3)/8x^3+24x+20 I don't know if that's what I'm suppose to do.1 solutions Answer 249538 by ankor@dixie-net.com(15746)   on 2010-09-28 09:30:28 (Show Source): You can put this solution on YOUR website! * It's a lot easier if you can cancel, here you can cancel (x+5), then you have: * =
 Expressions-with-variables/349096: Can you tell me what, Half the product of a number and five, would be in algebraic expressions?1 solutions Answer 249519 by ankor@dixie-net.com(15746)   on 2010-09-28 09:10:25 (Show Source): You can put this solution on YOUR website!Half the product of a number and five: (5x)
 Rectangles/349073: If the length and width of rectangle A are 10 percent less and 30 percent less, respectively, than the length and width of rectangle B, the area of A is equal to what percent of the area of B?1 solutions Answer 249517 by ankor@dixie-net.com(15746)   on 2010-09-28 09:07:30 (Show Source): You can put this solution on YOUR website!If the length and width of rectangle A are 10 percent less and 30 percent less, respectively, than the length and width of rectangle B, the area of A is equal to what percent of the area of B? : Let L = length of rectangle B Let W = width of B then .9L = Length of rectangle A .7W = width of A : = Cancel LW * 100 = 63%
 Inequalities/349087: I am trying to solve the below problem but I have question. -7(5y – 2) > 6(6y-1) I first multiplied -35y- -14> 36y-6 Then added 6 to both sides -35y- -14+6>36y -6+6 -35y- -8>36y I am confused, I am not sure if the next step is correct. 1 solutions Answer 249506 by ankor@dixie-net.com(15746)   on 2010-09-28 08:34:35 (Show Source): You can put this solution on YOUR website!I am trying to solve the below problem but I have question. -7(5y – 2) > 6(6y-1) I first multiplied -35y- -14> 36y-6 Now this should be -35y + 14 > 36y - 6 Then added 6 to both sides -35y + 14 + 6 > 36y -35y + 20 > 36y Subtract 20 from both sides -35y - 36y > -20 -71y > -20 y has to be positive, multiply both sides by -1, this reverses the inequality sign 71y < 20 y = <
 Geometry_Word_Problems/348189: Wendy, a landscaper, who just completed a rectangular flower garden measuring 25 feet by 15 feet, orders 3 cubic yards of pre-mixed cement, all of which is to be used to create a border of uniform width around the garden. If the border is to have a depth of 3 inches, how wide will the border be? 1 solutions Answer 249266 by ankor@dixie-net.com(15746)   on 2010-09-27 13:52:37 (Show Source): You can put this solution on YOUR website! a rectangular flower garden measuring 25 feet by 15 feet, orders 3 cubic yards of pre-mixed cement, all of which is to be used to create a border of uniform width around the garden. If the border is to have a depth of 3 inches, how wide will the border be? : Find the area of the garden 25 * 15 = 375 sq/ft : Find the area of the border by dividing 3 cu/yds by 3 inches Change 3 cu/yds to cu/ft: 3 * 27 = 81 cu/ft Change 3 inches to .25 ft = 324 sq/ft is the area of the border : The total area of the garden and the border 375 + 324 = 699 sq/ft : Let x = the width of the border : The equation for the total area (2x+25)*(2x+15) = 699 FOIL 4x^2 + 30x + 50x + 375 = 699 4x^2 + 80x + 375 - 699 = 0 4x^2 + 80x - 324 = 0 Use the quadratic formula to find x In this equation; a=4; b=80; c=-324 : : : The positive solution only wanted here x = x = 3.45 ft is the width of the border : : : Check solution, 2x = 6.9 (6.9+25)*(6.9+15) = 699 sq/ft, total area Subtract the area of the garden: 699 - 375 = 324, the area of the border Find the volume of the border (mult by 3" which is .25 ft: 324*.25 = 81 cu/ft Find 81 cu/ft in cu/yds: = 3 cu/yds
 Polynomials-and-rational-expressions/348351: multiply and if possible simplify ((a^2-1)/(2-5a))((15a-6)/(a^2+5a-6))1 solutions Answer 249119 by ankor@dixie-net.com(15746)   on 2010-09-26 21:56:45 (Show Source): You can put this solution on YOUR website! : Factor * : Cancel (a-1) and (5a-2) * =
 Angles/348163: the measure of an angle is 30 more times than 5 times its supplement. find the measure of each angle.1 solutions Answer 249021 by ankor@dixie-net.com(15746)   on 2010-09-26 17:07:01 (Show Source): You can put this solution on YOUR website!the measure of an angle is 30 more times than 5 times its supplement. find the measure of each angle. : Let x = the angle then (180-x) = it's supplement : Write an equation for the statement: "the measure of an angle is 30 more times than 5 times its supplement" x = 5(180-x) + 30 x = 900 - 5x + 30 x + 5x = 900 + 30 6x = 930 x = x = 155 degrees is the angle : : See that's true 155 = 5(180-155) + 30 155 = 5(25) + 30; confirms our solution of x = 155
 Expressions-with-variables/348220: 1 solutions Answer 249017 by ankor@dixie-net.com(15746)   on 2010-09-26 16:52:12 (Show Source): You can put this solution on YOUR website! Factor : - = Multiply by 3(x+2) 3(x+2)*-3(x+2)* = 3(x+2)* Cancel the denominators: (4x-1) - (x+2)(x-1) = 3(x-1) : 4x - 1 - (x^2 + x - 2) = 3x - 3 Remove brackets 4x - 1 - x^2 - x + 2 = 3x - 3 Combine like terms on the left -x^2 + 4x - x - 3x - 1 + 2 + 3 = 0 -x^2 + 4 = 0 -x^2 = -4 x^2 = +4 x = 2 : : Check solution in original problem - = Common denominator - = ; confirms our solution of x = 2
 Travel_Word_Problems/348083: Mike can run the mile in 6 minutes, and Dan can run the mile in 9 minutes. If Mike gives Dan a head start of 1 minute, how far from the start will Mike pass Dan? How long does it take?1 solutions Answer 248977 by ankor@dixie-net.com(15746)   on 2010-09-26 14:38:00 (Show Source): You can put this solution on YOUR website!Mike can run the mile in 6 minutes, and Dan can run the mile in 9 minutes. If Mike gives Dan a head start of 1 minute, how far from the start will Mike pass Dan? How long does it take? : Find M's speed: = 880 ft/min Find D's speed: = 586.667 ft/min : Find the time (t) for M to overtake D 880t = 586.667(t+1) 880t = 586.667t + 1) 880t - 586.667t = 586.667 293.333t = 586.667 t = t ~ 2 min ; : Find the distance: 2(880) = 1760 ft Check the distance: 3(586.667) = 1760.0 ft
 Rate-of-work-word-problems/348181: An oil tanker can be emptied by the main pump in 4 hours. An auxiliary pump can empty the tanker in 9 hours. If the main pump is started at 9 AM, when should the auxiliary pump be started so that the tanker is emptied by noon?1 solutions Answer 248970 by ankor@dixie-net.com(15746)   on 2010-09-26 13:45:17 (Show Source): You can put this solution on YOUR website!An oil tanker can be emptied by the main pump in 4 hours. An auxiliary pump can empty the tanker in 9 hours. If the main pump is started at 9 AM, when should the auxiliary pump be started so that the tanker is emptied by noon? : Let a = no. of hrs required by the Aux pump : let the completed job = 1 (An empty tank) : The Main pump will operate from 9 til 12: 3 hrs : A shared work equation: + = 1 Multiply equation by 36, results: 9(3) + 4a = 36 27 + 4a = 36 4a = 36 - 27 4a = 9 a = hrs Change this to Minutes * 60 = 135 min which is 2 hrs, 15 min ; Find the starting time: 11:60 - 2:15 = 9:45 AM start the Aux pump : : Check solution a = 9/4 = 2.25 hrs + = + = 1; confirms our solution
 Miscellaneous_Word_Problems/348158: I can figure out the answer to the problem Anna is 18, Dennis is 9 and Curtis is 5.. but what the teacher wants is to "Define a variable, and then write an equation for each problem". The problem is Anna is twice as old as her brother Dennis, who is 4 years older thean their brother Curtis. The sum of their ages is 32. How old is Anna? Need to define a variable and then write an equation and not sure how to do that? 1 solutions Answer 248961 by ankor@dixie-net.com(15746)   on 2010-09-26 13:00:54 (Show Source): You can put this solution on YOUR website!The problem is Anna is twice as old as her brother Dennis, who is 4 years older than their brother Curtis. The sum of their ages is 32. How old is Anna? : let a = Anna's age let d = Dennis's age let c = Curtis's age : Write an equation for each statement, we will try to get everything in terms of d: : "Anna is twice as old as her brother Dennis" a = 2d : "who is 4 years older than their brother Curtis." d = c + 4 Subtract 4 from both sides, and we have c = d-4 : " The sum of their ages is 32." a + d + c = 32 : Replace a with 2d, and replace c with (d-4) 2d + d + (d-4) = 32 2d + d + d = 32 + 4 4d = 36 d = d = 9 yrs is Denni's age then a = 2(9) = 18 is Anna's age
 Age_Word_Problems/347799: latoya is twice as old as her cousin was 3 years ago. if the sum of their ages now is 15, how old is each one of them?1 solutions Answer 248843 by ankor@dixie-net.com(15746)   on 2010-09-25 21:04:06 (Show Source): You can put this solution on YOUR website!latoya is twice as old as her cousin was 3 years ago. if the sum of their ages now is 15, how old is each one of them? : Let t = L's present Let c = cousin's present age : Write an equation for each statement : "latoya is twice as old as her cousin was 3 years ago." t = 2(c-3) t = 2c - 6 : "the sum of their ages now is 15," t + c = 15 Replace t with (2c-6) 2c - 6 + c = 15 3c = 15 + 6 3c = 21 c = c = 7 yrs, cousin's present age then t = 2c - 6 t = 2(7) - 6 t = 8 yrs is L's present age :
 Miscellaneous_Word_Problems/347821: A rectangular plot of ground having dimensions 25 feet by 38 feet is surrounded by a walk of uniform width. If the area of the walk is 568 ft 2 , what is its width? 1 solutions Answer 248834 by ankor@dixie-net.com(15746)   on 2010-09-25 19:53:57 (Show Source): You can put this solution on YOUR website!A rectangular plot of ground having dimensions 25 feet by 38 feet is surrounded by a walk of uniform width. If the area of the walk is 568 ft 2, what is its width? : Find the area of the plot of ground 25 * 38 = 950 sq/ft ; Let w = the width of the walk then the overall dimensions will be: 2w+25 by 2w+38 then (2w+25)*(2w+38) = total area of plot and walkway FOILs to 4w^2 + 76w + 50w + 980 = 4w^2 + 126w + 980 : overall area - plot area = walkway area 4w^2 + 126w + 950 - 950 = 568 4w^2 + 126w - 568 = 0 simplify, divide by 2 2w^2 + 63w - 284 = 0 You can use the quadratic formula, but this will factor (2W + 71)(w - 4) = 0 the positive solution w = 4 ft is the width of the walkway : : See if that is true Overall area: (8+25)*(8+38) = 1518 1518 - 950 = 568 Plot area: 980
 Exponential-and-logarithmic-functions/347481: solve two angles are complementary if their sum is 90 degrees. if the measure of the first angle is x degrees, and the measure of the second angle is (3x-2) degrees, find the measure of each angle1 solutions Answer 248779 by ankor@dixie-net.com(15746)   on 2010-09-25 16:09:18 (Show Source): You can put this solution on YOUR website!two angles are complementary if their sum is 90 degrees. if the measure of the first angle is x degrees, and the measure of the second angle is (3x-2) degrees, find the measure of each angle : x + (3x-2) = 90 4x = 90 + 2 4x = 92 x = x = 23 degrees is the first angle then 3(23) - 2 = 67 degrees is the 2nd angle
 Graphs/347825: it says to garph equation. 3x+7y=14 how do i garph it.how do i put it in slope intercept form and what is the easiestway to do it.slope intercept or to use x for 0 and y for 0.how do i do them both thank u very much. x,y 0 2 ? 01 solutions Answer 248778 by ankor@dixie-net.com(15746)   on 2010-09-25 16:05:00 (Show Source): You can put this solution on YOUR website!it says to graph equation. 3x+7y=14 Put in slope/intercept form, subtract 3x from both sides, results 7y = -3x + 14 Divide both sides by 7 y = x + y = x + 2; the slope/intercept form : you can see that when x = 0, y = 2 y = 0 + 2 y = 0 + 2 : When y = 0, find x, write it: x + 2 = 0 x = -2 multiply both sides by 7, results -3x = 7(-2) -3x = -14 Multiply both sides by -1 3x = 14 divide both sides by 3 x = ~ 4.67 : So you have x | y ------- 0 | 2 4.67| 0; Graph these two points
 Miscellaneous_Word_Problems/347916: We know from geometry that the sum of the angles in any triangle is 180 degrees. suppose that the smallest angel is 78 degrees less than the largest one. Also suppose that the middle angle is three times as large as the smallest angle. What is the degree measure of each angle. Thank you1 solutions Answer 248756 by ankor@dixie-net.com(15746)   on 2010-09-25 14:51:24 (Show Source): You can put this solution on YOUR website!We know from geometry that the sum of the angles in any triangle is 180 degrees. suppose that the smallest angel is 78 degrees less than the largest one. Also suppose that the middle angle is three times as large as the smallest angle. What is the degree measure of each angle : Let the three angle be A, B, C, (A is the largest, C is the smallest) : Write an equation for each statement: "the smallest angel is 78 degrees less than the largest one." C = A - 78) or if you add 78 to both sides: A = (C+78) : "the middle angle is three times as large as the smallest angle." B = 3C : A + B + C = 180 Replace A with (C+78); Replace B with 3C (C+78) + 3C + C = 180 5C = 180 - 78 5C = 102 C = C = 20.4 degrees is the smallest angle then A = 20.4 + 78 A = 98.4 degrees is the largest angle and B = 3(20.4) B = 61.2 degrees is the middle angle ; : Check our solutions by finding the sum of the angles 98.4 + 61.2 + 20.4 = 180; confirms our solutions
 Geometry_Word_Problems/347856: A circle is inscribed in a square, which is circumscribed by another circle. If the diagonal of square is 2x, find the ratio of the area of the large circle to the area of the small circle? 1 solutions Answer 248755 by ankor@dixie-net.com(15746)   on 2010-09-25 14:38:51 (Show Source): You can put this solution on YOUR website!A circle is inscribed in a square, which is circumscribed by another circle. If the diagonal of square is 2x, find the ratio of the area of the large circle to the area of the small circle? ; x = the radius of the large circle then A = ; the area of the larger circle : Find the area of the small circle : Let s = side of the square, given that 2x = diagonal of the square s^2 + s^2 = (2x)^2 2s^2 = 4x^2 Divide both sides by 2 s^2 = 2x^2 s = s = is the side of the square : the side of the square is also the diameter of the small circle,therefore: = the radius of the small circle Find the area of the small circle A = Which is: A = Cancel 2 A = : large area ---------- would be: small area = = ; canceled pi*x^2
 test/347539: How do you graph x=x2 using certain points?1 solutions Answer 248639 by ankor@dixie-net.com(15746)   on 2010-09-24 19:34:57 (Show Source): You can put this solution on YOUR website!: How do you graph x=x2 using certain points? : rewrite it to: x^2 - x = 0 x(x - 1)= 0 Two solutions x = 0 and x = 1 : Graph y = x^2 - x : points to graph x | y ------ -2 | 6 -1 | 2 0 | 0 +.5|-.25 +1 | 0 +2 | 2 +3 | 6 : The graph
 Miscellaneous_Word_Problems/347469: It takes 12 seconds for the two trains to pass one another when moving in opposite directions. If they are in the same direction, it will take the faster train 3 minutes to pass the slower one. If the trains are 130 meters and 120 meters long, respectively, what are the rates of the two trains?1 solutions Answer 248485 by ankor@dixie-net.com(15746)   on 2010-09-24 11:47:01 (Show Source): You can put this solution on YOUR website!It takes 12 seconds for two trains to pass one another when moving in opposite directions. If they are in the same direction, it will take the faster train 3 minutes to pass the slower one. If the trains are 130 meters and 120 meters long, respectively, what are the rates of the two trains? : Let a = speed of the faster train let b = speed of the slower : Trains meeting each other The sum of the speed of the two trains (in meters/sec) speed = dist/time a + b = a + b = 20.83 m/sec is the sum of their speeds : Trains going in the same direction (change 3 min to 180 sec a - b = a - b = 1.39 m/sec is the difference of their speed : Use elimination a + b = 20.83 a - b = 1.39 ----------------adding eliminates b, find a 2a = 22.22 a = a = 11.11 m/sec is the speed of train a In km/hr: ~ 40 km/hr : then using the sum equation find b 11.11 + b = 20.83 b = 20.83 - 11.11 b = 9.72 m/sec is the speed of train b In km/hr ~ 35 km/hr
 Evaluation_Word_Problems/347403: a woman drove part of a 185 mi trip at 50 mi/h and the rest at 55 mi/h. Find the distance she traveled at 50 mi/h if her total driving was 3 hours and 30 min1 solutions Answer 248423 by ankor@dixie-net.com(15746)   on 2010-09-23 22:10:34 (Show Source): You can put this solution on YOUR website!a woman drove part of a 185 mi trip at 50 mi/h and the rest at 55 mi/h. Find the distance she traveled at 50 mi/h if her total driving was 3 hours and 30 min : Change 3 hr 30 min to 3.5 hrs : Let d = distance at 55 mph then (185-d) = distance at 50 mph : Write a time equation; time = dist/speed : Time at 55 mph + time at 50 mph = 3.5 hrs + = 3.5 : multiply by 550 to get rid of the denominators 10d + 11(185-d) = 550(3.5) 10d + 2035 - 11d = 1925 10d - 11d = 1925 - 2035 -1d = -110 d = 110 mi at 55 mph then 185 - 110 = 75 mi at 50 mph : : Check this by finding the actual times at each speed 110/55 = 2.0 hr 75/50 = 1.5 hr ------------------ total time 3.5 hrs
 Polynomials-and-rational-expressions/347456: What number(s) should be excluded as values of x in the polynomial? x+2 ----- x^2-41 solutions Answer 248421 by ankor@dixie-net.com(15746)   on 2010-09-23 21:52:25 (Show Source): You can put this solution on YOUR website!What number(s) should be excluded as values of x in the polynomial? x + 2 ----- x^2-4 : x values that make the denominator 0 should be excluded : x^2 - 4 = 0 Factor the difference of squares (x-2)(x+2) = 0 x = +2 and x = -2, should be excluded
 Travel_Word_Problems/347212: it takes a freight train 3 hours more to travel 200 miles than it takes an express train to travel 120 miles. the express train is 20 mph faster than the freight train. find the rate of both trains1 solutions Answer 248419 by ankor@dixie-net.com(15746)   on 2010-09-23 21:48:36 (Show Source): You can put this solution on YOUR website!it takes a freight train 3 hours more to travel 200 miles than it takes an express train to travel 120 miles. the express train is 20 mph faster than the freight train. find the rate of both trains : Let s = speed of the freight then (s+20) = speed of the express : Write a time equation, time = dist/speed : Freight time - express time = 3 hrs - = 3 : multiply by s(s+20), results: 200(s+20) - 120s = 3s(s+20) : 200s + 4000 - 120s = 3s^2 + 60s : 80s + 4000 = 3s^2 + 60s : 0 = 3s^2 + 60s - 80s - 4000 A quadratic equation 3s^2 - 20s - 4000 = 0 Factors to: (3x + 100)(s - 40) = 0 the positive solution is what we want here: s = 40 mph is the freight then 40 + 20 = 60 mph is the express : : Check solution by finding the travel time of each 200/40 = 5 hr 120/60 = 2 hr ------------- differs: 3 hr
 Quadratic_Equations/347261: Solve by completeing the square, using th quadratic formula or by factoring t square - 4t + 8 = 01 solutions Answer 248414 by ankor@dixie-net.com(15746)   on 2010-09-23 21:27:12 (Show Source): You can put this solution on YOUR website!Solve by completing the square, using th quadratic formula or by factoring t^2 - 4t + 8 = 0 t^2 - 4t + ___ = -8 (4/2)^2 = 4 will complete the square, add to both sides t^2 - 4t + 4 = -8 + 4 t^2 - 4t + 4 = -4 (t-2)^2 = -4 Find the square root of both sides t - 2 = +/- t - 2 = +/- 2i two solutions t = 2 + 2i and t = 2 - 2i
 Rational-functions/347325: Simplify 6-w/w-3 x 3w-7/3-w please!!? subtract and siimplify if possible 6-w/w-3 x 3w-7/3-w simplify the answer 1 solutions Answer 248381 by ankor@dixie-net.com(15746)   on 2010-09-23 20:20:03 (Show Source): You can put this solution on YOUR website!Simplify 6-w/w-3 x 3w-7/3-w You said subtract so assume the problem is: - : We can factor out -1 from the 2nd denominator, we have - Which is - ; Both denominators are the same Minus a minus is a plus + = =
 Money_Word_Problems/347199: Debra invested her savings in two investment funds. The amount she invested in Fund A was 3 times as much as the amount she invested in Fund B. Fund A returned a 4% profit and Fund B returned a 5% profit. How much did she invest in Fund A, if the total profit from the two funds together was 2280? 1 solutions Answer 248360 by ankor@dixie-net.com(15746)   on 2010-09-23 18:34:35 (Show Source): You can put this solution on YOUR website!Debra invested her savings in two investment funds. The amount she invested in Fund A was 3 times as much as the amount she invested in Fund B. Fund A returned a 4% profit and Fund B returned a 5% profit. How much did she invest in Fund A, if the total profit from the two funds together was 2280? : Let x = amt invested in fund B then 3x = amt invested in fund A : Total interest equation .05x + .04(3x) = 2280 .05x + .12x = 2280 .17x = 2280 x = x = 13411.76 in fund B and 3(13411.76) = \$40,235.29 in fund A ; : Check these values, find the total interest .04(40235.29) + .05(13411.76) = 1609.41 + 670.59 = 2280, confirms our solutions
 Finance/347120: Please help :c)))))) What is the monthly payment on a 5 year car loan for \$14,000 at an annual interest rate of 12%? 1 solutions Answer 248290 by ankor@dixie-net.com(15746)   on 2010-09-23 15:37:57 (Show Source): You can put this solution on YOUR website!\$311.42
 Numbers_Word_Problems/346992: five years ago, felipe was half of carolinas age. at that time, the sum of their ages was 30. how old is felipe now?1 solutions Answer 248255 by ankor@dixie-net.com(15746)   on 2010-09-23 13:19:48 (Show Source): You can put this solution on YOUR website!let f = F's present age Let c = C's present age : Write an equation for each statement, then simplify it: : five years ago, felipe was half of carolinas age. f - 5 = .5(c - 5) f - 5 = 5c - 2.5 f = .5c - 2.5 + 5 f = .5c + 2.5 : at that time, the sum of their ages was 30. (f-5) + (c-5) = 30 f + c - 10 = 30 f + c = 30 + 10 f + c = 40 : Replace f with (.5c+2.5) from the 1st equation (.5c+2.5) + c = 40 1.5c = 40 - 2.5 1.5c = 37.5 c = c = 25 yrs is C's present age : How old is felipe now? Find f using the equation: f + c = 40 f + 25 = 40 f = 40 - 25 f = 15 yrs is F's present age : : Check solutions using the statement: five years ago, felipe was half of carolinas age. 15 - 5 = .5(25 - 5) 10 = .5(20); confirms our solutions
 Volume/346979: A container in the shape of a right circular cylinder is 1 foot high and has a capacity of 4 quart. What is the number of quarts of liquid in the container when it is filled to a height of 9 inches?1 solutions Answer 248246 by ankor@dixie-net.com(15746)   on 2010-09-23 13:03:05 (Show Source): You can put this solution on YOUR website!A container in the shape of a right circular cylinder is 1 foot high and has a capacity of 4 quart. What is the number of quarts of liquid in the container when it is filled to a height of 9 inches? : It will be the same relationship as 9 inches is to 12 inche : * 4 = 3 qts
 Graphs/347137: Write a question that can be solved using the equation 5x=45.1 solutions Answer 248235 by ankor@dixie-net.com(15746)   on 2010-09-23 12:29:20 (Show Source): You can put this solution on YOUR website!Write a question that can be solved using the equation 5x=45. : How many x's can you buy for \$45, if they cost \$5 each 5x = 45 x = 45/5 x = 9 x's