2010 Promo Ans.doc - TJC 2010 Promo Exam H2 Maths Solutions...

This preview shows page 1 - 4 out of 12 pages.

We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
College Algebra
The document you are viewing contains questions related to this textbook.
Chapter 1 / Exercise 107
College Algebra
Gustafson/Hughes
Expert Verified
TJC 2010 Promo Exam H2 Maths Solutions General comments: 1 Inappropriate use of a GC Q10(b) “Using an algebraic method, solve the inequality” Q13(a)(i) “Find the exact value of the integral” 2 Show sufficient/detailed working when the answer is given. 3 Use of brackets is necessary. 10
___ ___ ___ ___ . . . . . ___ (We do not need to arrange among the 10 men as that will be result in repetitions) No. of arrangements = (5 − 1)! 5! = 2880 2 Let the unit cost for electricity be $ x per kWh, gas be $ y per kWh and water be $ z per m 3 . Utilities bill for May: 200 12 6.5 57 x y z ---------- (1) June: 250 10 6.24 68.09 x y z ---------- (2) July: 210 0.0057 11 6.76 60.66 x y z 1 First arrange the 5 women in a circle Arrange/slot in the 5 men in the 5 seats between the 5 women W 1 W 2 W 3 W 4 W 5 Arrange the 10 women in the 10 seats
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
College Algebra
The document you are viewing contains questions related to this textbook.
Chapter 1 / Exercise 107
College Algebra
Gustafson/Hughes
Expert Verified
TJC 2010 Promo Exam H2 Maths Solutions P P ,
2
TJC 2010 Promo Exam H2 Maths Solutions 4 Let a and r be the first term and common ratio of the arithmetic and geometric progression respectively. 2 4 4 2 4 a r a r      ------------- (1) 2 4 2 4 4 4 4 a a r a r   2 4 4 2(2) 4( ) 4 a a r   2 2 0 a r --------------- (2) Sub (1) into (2), 2 2 4 2 0 r r 2 2 4 2 0 r r 2 2 1 0 r r 2 2 2 1 2 2 r 1 2 r

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture