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Singapore
Li Ting deposited $15000 in an account that pays 4.12% per annum compound interest. Find the total amount in the account after 3 years if the interest is compounded  (a) monthly,  (b) half-yearly. 
Arithmetic Mar 25, 2025
28−7x−8x2=A(2x2+9)+(3x+c)(3x−2)
Algebra Mar 25, 2025
that (125)x+1×56x−3=55−x, find
Algebra Mar 25, 2025
Simplify m22n5÷m53n−8, expres
Algebra Mar 25, 2025
(b) (p52q)÷p3q2q−2
Algebra Mar 25, 2025
9. A spherical balloon is being filled with helium. Given that its surface area is increasing at a constant rate of 8 cm2/s, how fast is the volume changing when its radius is 5 cm ?
Calculus Mar 25, 2025
c) The mean time for females to complete the race was 58.3 minutes and the standard deviation was 9.6 minutes. Make two comparisons between the times for males and the times for female
Statistics Mar 25, 2025
(c) In the absence of the magnetic field due to the current in the wire, the compass needle sets in the N -S drection under the influence of the Earth's magnetic field. Explain why, when the current is adjusted to a certain value, the needle deflects from the N−S direction.
Physics Mar 25, 2025
(c) Antonio travels 100 km at an average speed of x km/h. He then travels a further 150 km at an average speed of (x+10)km/h. The time taken for the whole journey is 4 hours 20 minutes. (i) Show that 13x2−620x−3000=0. (ii) Solve 13x2−620x−3000=0 to find the speed Antonio travels for the first 100 km of the journey. You must show all your working and give your answer correct to 1 decimal place. (4] (i) (i) ( 17
Algebra Mar 25, 2025
(c) Antonio travels 100 km at an average speed of x km/h. He then travels a further 150 km at an average speed of (x+10)km/h. The time taken for the whole journey is 4 hours 20 minutes. (i) Show that 13x2−620x−3000=0.
Algebra Mar 25, 2025
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