MATH 121 - WRITTEN EXERCISES-MODULE 1

# 2 7 70 0 639 70 175 4473 175 0 0 6223 jimmy

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Unformatted text preview: T-121-OL-(1 Nov 09 thru 23 Jan 2010) R.5 Written Assignment (Con’t) 2 y 2 2y − 2 2� − y yy y = = 60.) 2 y 2 2y + 2 2+ 2� + y yy y 2( y − 1) (2( y ) + 2( −1)) y 2( y − 1) y = = = 2( y ) + 2(1) 2( y + 1) 2( y + 1) y y y 1 1 � y − 1) = 2( � − 1) (y = 2( y + 1) y +1 y −1 = y +1 70.) What is the distance from the origin of the Nile where the river has an altitude of 7000 ft.? 2− 7 − 7.0 0 = .639 ( 7.0 ) + 1.75 4.473 + 1.75 0 =0 = 6.223 Jimmy Morgan-MAT-121-OL-(1 Nov 09 thru 23 Jan 2010) R.6 Written Assignment -2 3 �8 � 46b. � � = 27 �� 1 1 =32 2/3 8 ( 8) 2/3 (27) ( 3 27) 2 1 1 = 2 4 = (2) (3) 2 9 = 9 4 1 121 ( 121) �� 54. � � = 3/2 1 �00 � ( 100 ) -32 3/2 = ( ( 1 ) 100 ) 121 3 3 = 1 (11)3 (10)3 1 1000 = = 1331 1331 1000 56.) 64/3 62/3 = 64/3+2/3 = 6 6 = 6 3 = 62 = 36 60.) r -8/9 4+ 2 r17/9 = r -8/9+17/9 =r 62. z 3/4 z 5/4 z -2 = 3 z 3/4 z 5/4 +(-2) z 3/4 = 3/4 z = z 3/4−( −3/4) = z 3/2 74. p11/5 ( 3 p 4/5 + 9 p19/5 ) = p11/5 3 p 4/5 + p11/5 9 p19/5 = 3 p11/5+4/5 + 9 p11/5+19/5 = 3 p3 + 9 p 6 82. y -5 − 3 y -3 ; y -5 = y -5 ( y -5 − 3 y -3 ) -5 2 = y ( 1− 3y ) 90. -3p -3/4 − 30 p -7/4 ; -3 p -7/4 = − 3 p -7/4 ( -3 p -3/4 − 30 p -7/4 ) -7/4 = -3 p ( p + 10 ) Jimmy Morgan-MAT-121-OL-(1 Nov 09 thru 23 Jan 2010) R.7 Written Assignment 6. ( 5r + 3t ) 4/7 = 7 ( 5r + 3t ) 4 8. - 4 z 5 = - z 5/4 22. 4 81 = 811/4 = 91/4 =3 66. 3 32 − 5 3 4 + 2 3 108 = ( 3 ) 8 3 4 − 53 4 + 2 ( 3 3 = 2 4 − 5 4 + ( 2 ) ( 3) 3 27 3 4 ( 4) 3 = 23 4 − 53 4 + 63 4 = 33 4 3 78. 8m 2 n3 3 3 2m 2 = 43 32m n = 90. r 3− r = = ( 3 3 16m 4 n3 3 4 3 4 = = 32m4 n3 8 38 4 2 r 3+ r ) ( 3− r ) ( 3+ r ) r ( 3+ r ) 9−r 3 3 4 8 )...
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