REVISION TEST- WK 4 MATHEMATICS Total = 50 marks Time = 1 ½ hours 1.PQRSTU is a regular hexagon, determine each angle of ∆PQT. 2. In a quadrilateral ABCD, CO and DO are the bisectors of C and D respectively. Prove that <COD = 1/2 (<A +<B). 3. What should be added to -⅞ so as to get ⁵/9 4. Verify associative of addition for the following: X= (-²/5) Y =( ⁴/3 ) Z = (-⁷/10 ) 5. The difference between the squares of two consecutive numbers is 31. Find the numbers. 6. Sunita is twice as old as Ashima. If six years is subtracted from Ashima's age and four years added to Sunita's age, then Sunita will be four times Ashima's age. How old were they two years ago. 7. The sum of three consecutive multiples of 7 is 63. Find these multiples. 8. The numerator of a fraction is 2 less than the denominator. If one is added to its denominator, it becomes 1/2 find the fraction. 9. What is the ratio of the interior angles of a pentagon and a decagon? 10. a. The exterior angle of a regular polygon is one-fifth of its interior angle. How many sides have the polygon? b. The exterior angle of a regular polygon is one-fifth of its interior angle. How many sides have the polygon? ****