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Worksheet 3: Reporting 'Wh' Questions Direct Speech: "What time is it?" Peter asked Ray. Reported Speech: Peter asked Ray what time it was. - In the direct question, the verb comes before the noun (subject). - In the reported statement, the verb comes after the noun (subject). - Changes in tense, pronoun, time reference, position and punctuation apply. 1. "What-are the children doing?" Grandpa asked my father. Grandpa asked my father what 2. "Where is the post-office?" enquired the tourist. The tourist enquired where 3. "Why are you crying?" my teacher asked Bala. My teacher asked Bala why 4. "Why must she leave in such a hurry just now?" Prince Charming asked himself. Prince Chaming asked himself why
English Mar 28, 2025
A5 The gradient of the tangent to the curve y=ax2+bx at the point (2,7) is equal to 6 . Find the value of a and of b. A6 A man 1.8 metres tall is walking at a constant rate of 1.25 m/s away from a lamp post which is 8 metres tall. How fast is the length of his shadow changing? A7 A function is defined by the equation y=2x2x−1. Show that it is increasing for x>2.
Calculus Mar 28, 2025
(c) The diameter of a red blood cell is 7.8×10−6 m. In a scale drawing, the diameter of a red blood cell is 3.9 cm . (i) Find the scale used for the drawing. Give your answer in the form n:1. (ii) Drawn to the same scale as the red blood cell, the diameter of a blood platelet is 8 mm . Find the actual diameter of the blood platelet. Give your answer in millimetres in standard form.
Biology Mar 28, 2025
(c) The diameter of a red blood cell is 7.8×10−6 m. In a scale drawing, the diameter of a red blood cell is 3.9 cm . (i) Find the scale used for the drawing. Give your answer in the form n:1.
Geometry Mar 28, 2025
(b) Population density is defined as the number of people per square kilometre. In 2020 , the population density of Singapore was 7810 people per square kilometre. In 2020 , the total population of Singapore was 5.69 million.
Statistics Mar 28, 2025
Ravi invests $4500 at a rate of 0.25% per month compound interest. (a) Explain why the first year's interest is not 3% of $4500. As he nave to pay $135 per montn and lesser as heonly nace to pay $11−25 (b) Calculate the value of his investment at the end of 12 months.
Arithmetic Mar 28, 2025
A4 A pebble is dropped into still water and sets off ripples forming a circular wave. The radius of the wave after t seconds is r meters. In the first few seconds, the radius is defined by the function r=3t−0.5t2. (i) Write down an expression for the area covered by the ripples after (ii) What is the rate of change of this area with respect to time? (iii) How fast is this area changing after 2 seconds?
Calculus Mar 28, 2025
It is given that y=(x−3)2x+1. Find the value of x when the rate of decrease of y is twice the rate of increase of x.
Calculus Mar 28, 2025
1 Find the range of values of x for which (a) y=x2+2x−4 is an increasing function, (b) y=3x2+4x−3 is a decreasing function. The equation of a curve is y=19(3x−1)3−3x. (i) Find the gradient of the normal at the point P where the curve intersects the y-axis. (ii) Find the equation of the normal at P in the form px+qy+r=0, where p,q and r are integers. (iii) The normal at P meets the x-axis at the point Q. Find the area of triangle OPQ. (iv) Find the range of values of x for which y=19(3x−1)3−3x is an increasing function of x.
Calculus Mar 28, 2025
CS International CSE Physics (Chapter 5 Momentum) Two equally weighted objects of mass m are moving in opposite directions, one with half the velocity of the other. If they collide and stick together, what is the resultant velocity in terms of the faster object's velocity, v ?
Physics Mar 28, 2025
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