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### Transcript of NOTE MATH FORM 3 - ALGEBRAIC FORMULA

• 1. Friday, January 25, 2013 ALGEBRAIC FORMULAE AIRIL AHMAD AIRIL AHMAD

2. Friday, January 25, 2013 Area of triangle= 1L = 2r2 lenght height V = Length breath height 5C = ( F 32) 9 AIRIL AHMAD 3. Friday, January 25, 2013 hA=xbxhb Subject of the formula AIRIL AHMAD 4. Friday, January 25, 2013 Change the subject of the following formulae to the letter given in the brackets: Example 2: Example 1: w = x + 5 y (x) p = q 27 (q) 5y x + 5y = w+ 27q 27 = p q =px =w AIRIL AHMAD 5. Friday, January 25, 2013Example 3:Example 4: p = 2q(q )3m = 2n (n) 2q =p 2 n = 3mq =pn = 3m AIRIL AHMAD 6. Friday, January 25, 2013 AIRIL AHMAD 7. Friday, January 25, 2013Example 5: Example 6:p = 2q 27 (q ) w = 4 x + 5 y (x)2q+ 27 = p4x 5y = w+ 2q =p4x = w p + 27 w 5y q =x =4 AIRIL AHMAD 8. Friday, January 25, 2013Example 7: Example 8:p = 2q 27 (q ) 22q + 27= p 272w = x + 5 y (x) 3 3 x 5y = w +22q 2 =p 2q =p + 27 3 x =w x = ( w 5y ) 3p + 27 q=2 AIRIL AHMAD 9. Friday, January 25, 2013 ExerciseAIRIL AHMAD 10. Friday, January 25, 2013Exercise1. Make k the subject of the following formulae ka.m = 4+ 3b.x = k +9 2c.6+ k = 2pd. 4k = hk + 5 AIRIL AHMAD 11. Friday, January 25, 2013ExercisePage161Ex.7.2CNo. 1a,b,c,d,e,f,I,j,kAIRIL AHMAD 12. Friday, January 25, 2013 ALGEBRAIC FORMULAE(Find the value of variable) AIRIL AHMAD AIRIL AHMAD 13. Friday, January 25, 2013 Example 1 2 Given that V = s h , find the value of V when s=6 and h=9 1: 69 3 Solution:31 2 1 V = s h V = 36 93 3 1 1 V = 1 36 3V= X X 3 V = 108 AIRIL AHMAD 14. Friday, January 25, 2013 Example 1 Given that A = bh 2:, find the value of A when124b=12 and h=4 2 Solution: 2 11A = bh A = 12 4 22 11 A = 112 2 A=X X2A = 24 AIRIL AHMAD 15. Friday, January 25, 2013 Exercise:1. Given that, find the value of I when P=2500, R=8 and T=2 PRT I = 1002. Given that, find the value of M when a=72 and b=28 M = 4a 3b3. Given that1, find the value of A when h=15, a=13 and b=21A = h( a + b) 24. Given that y = mx + c , find the value of y when m= -2 ,x=5 and c= -45. Given thatL = x + 2tx2, find the value of L when x= -3 and t = 4AIRIL AHMAD 16. Friday, January 25, 2013Exercise: Pg.163 Ex.7.2E No. 1 - 4 AIRIL AHMAD 17. Friday, January 25, 2013Exercise: Pg.167 Subjective Questions No. 1 - 8AIRIL AHMAD