Formulas and Factorization

Formulas and Factorization - C 16 cm Brea = 25 cm2 a 8 cm A...

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area = 25 cm 2 b cm 3 cm Height = 5cm 16 cm 8 cm P S R Q C B A ( y + 8) cm 2( x + y ) cm ( x + 10) cm Formulas and Factorization Form 2 1. In each of the following, make the letter in the square brackets the subject of the formula. (a) [ R ] (b) [ k ] (c) [ U ] 2. The area A cm 2 of a trapezium is given by the formula, where a cm and b cm are the lengths of its two parallel sides and h cm is its height. (a) If a = 2, b = 4 and h =5, what is the value of A ? (b) Find the value of b for the trapezium shown in the figure below. 3. In each of the following, find the value of the unknown. (a) If E = 147, I = 6, find W ( W > 0) (b) If = 100, a = 10, d = 3, find n . (c) If u = 4, f = 2.4, find v . 4. Give m = 3, v = –5, h = 4, g = 10, find the value of E = 5. (i) A telephone company bills its customers according to the following formula: where $ F represents the telephone fee, C the number of calls and $ S the service charge. (a) If a customer has made 20 calls and the service charge is $50, what is the telephone fee the customer has to pay? (b) Make C the subject of the formula. (c) If a customer has to pay a telephone fee of $55 in a certain month and the service charge is
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This note was uploaded on 09/21/2011 for the course MATH 103 taught by Professor Wouters during the Spring '08 term at Wisc Oshkosh.

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Formulas and Factorization - C 16 cm Brea = 25 cm2 a 8 cm A...

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