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Can you please help with Question 5 on the 2008 MAT?

Certainly. The nth student (Sn) changes the state of every nth locker - i.e. the multiples of n. If changed an odd number of times, the locker is open -- if even then closed. i. how many closed after 3rd stu...
CA
Answered by Carlo A. • MAT tutor
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Write 0.72727272 as a fraction in its simplest form

a = 0.72727272 100a = 72.72727272 100a - a =72.72727272-0.72727272 = 72 = 99a a =72/99 so 0.72727272 = 72/99 0.72727272 refers to 0.72 where the 72 is recurring.
JH
Answered by James H. • Maths tutor
17158 Views

What did Xiao Ming do when he went to the park? 小明和爸爸昨天下午去公园踢球 A: sailing B: football C: Running D: picnic

B: football name/with whome/when/where/did what
ZS
Answered by Zhiqi S. • Mandarin tutor
3571 Views

Identify the stationary points of f(x)=3x^3+2x^2+4 (by finding the first and second derivative) and determine their nature.

f'(x)=9x 2 ​+4x, and f''(x)=18x+4 (derivatives) f'(x)=0 at x=0 or x=-4/9 when x=0 f''(x)>0 therefore a minimum value, when x=-4/9 f''(x)<0 and thus a maximum value.
SO
Answered by Sieff O. • Maths tutor
4267 Views

How do you form and use and the pluperfect and conditional perfect tenses?

PLUPERFECT Used to describe an action or event that had taken place before some other event in the past How to form it: Auxiliary verb- etre or avoir in the IMPERFECT tense J’étais ; tu étais ; il/elle/on ét...
EW
Answered by Emily W. • French tutor
3038 Views