Web10 okt. 2024 · Solution: If x: y = 5: 2, then (8x+9y): (8x+2y) = ? Let x = 5 k and y = 2 k; x y = 5 k 2 k = 5 2 ( 8 x + 9 y): ( 8 x + 2 y) = 8 x + 9 y 8 x + 2 y = 8 × 5 k + 9 × 2 k 8 × 5 k + … WebSystems of equations with substitution: y=-5x+8 & 10x+2y=-2 CCSS.Math: 8.EE.C.8 , 8.EE.C.8b Google Classroom About Transcript Learn to solve the system of equations y = -5x + 8 and 10x + 2y = -2 using substitution. Created by Sal Khan and Monterey Institute for Technology and Education. Sort by: Top Voted Questions Tips & Thanks
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WebIf x : y = 5 : 2, then (8x + 9y) : (8x + 2y) is : (a) 22 : 29 (b) 26 : 61 (c) 29 : 22 (d) 61 : 26 Solution : Let x=5k and y=2k.Then, 8 x + 9 y 8 x + 2 y = ( 8 × 5 k) + ( 9 × 2 k) ( 8 × 5 k) + ( 2 × 2 k) = 58 k 44 k = 29 22. ⇒ ( 8 x + 9 y): ( 8 x + 2 y) = 29: 22. 5 ) If (x : y) = 2 : 1, then (x 2 - y 2) : (x 2 + y 2) is : (a) 3 : 5 (b) 5 : 3 (c) WebStep-by-Step Examples Algebra Solve for x Calculator Step 1: Enter the Equation you want to solve into the editor. The equation calculator allows you to take a simple or complex equation and solve by best method possible. Step 2: … teachermade tutorial
INTERNATIONAL MATHEMATICS OLYMPIAD 2012 Class VIII
WebIf x:y=5:2 then (8x+9y):(8x:2y) is: The salaries of A,B,C are in the ratio 2:3:5. If the increments of 15%, 10% and 20% are allowed respectively in their salaries, then what will be the new ratio of their of their salaries? If Rs.782 be divided into three parts , proportional to 1/2:2/3:3/4 then the first part is: WebUnderstand the how and why See how to tackle your equations and why to use a particular method to solve it — making it easier for you to learn.; Learn from detailed step-by-step explanations Get walked through each step of the solution to know exactly what path gets you to the right answer.; Dig deeper into specific steps Our solver does what a calculator … Web16 okt. 2024 · Given x:y = 5:2. Now, ⇒ (8x + 9y)/ (8x + 27) Divide the numerator and denominator by 'y', we get ⇒ [8 (x/y) + (9y/y)]/ [8 (x/y) + (2y/y)] ⇒ [8 (5/2) + 9]/ [8 (5/2) + … teachermade reviews