PART I Attempt all questions in this part. (a) Find the value of x if log10(20x – 10)- log10(x + 3) log10 5. (b) A discount of 15% is allowed on an article. If a customer received N600.00 discount, find the actual amount paid on the article. (a) Simplify x-ly*z5 (b) V2 Find the value of k if- %3D , leaving your answer in the form p+m n. Make r the subject of the formula V = mg/(1-r2). Hence, find the value of r when V =15, m 20 and g 10. %3D %3D A sector of a circle of radius 14cm subtends an angle of 72° at the centre of the circle. Find the: (i) (ii) (iii) Length of arc of the sector Perimeter of the sector Area of the sector (Use n =) %3D 5. The masses of 35 girls in a club are as shown below. 40 45 50 55 Masses (kg) Frequency 35 69 30 6. 4 4 (a) (b) Determine the mode and the median of the distribution. Using an assumed mean of 40kg, calculate the mean mass.

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