ICSE − Q & A

http://www.respaper.com/icse_prelims/358/876/3594-pdf.html Q1(c)
is 40.50 decrease correct?

If A={x:-1<x<7,x belongs to R} and B={x:1<x<5,x belongs to I},
If hey ask us to plot A intersection B' then wont it include all real no.s between the integers 2 and 4(which belong to B)?How do we plot it then on the no. line?

+ 1 more questions by akashskyash007  

SELINA: Pg 435 Q 6 (c):Im getting the slant ht. of the cone in roots Pg 435 Q 6(b):Is the ans given at the back wrong?for A intersection B Pg 440 Q 11(C):Again i got 0.9 and -1.9 for this pls clarify Thnx!!!!
asked by Akash Ashok (akashskyash007) 7 years ago
2

one question please do answer, in sums of trigonometry such as find dis. btw 2 ships when height of cliff is given and the angle facing the cliff is given as 32.20 degree
then to find the base we need to divide the h of cliff by tan 32.20 so instead can we consider the consider the complementary angle so only we would have to multiply the h you may ask me to use cot instead but i don't think so cot values are given in the clarke's book

http://www.respaper.com/padmanabh30/9936-pdf.html in q.10b will the month of april have zero balance??

+ 1 more questions by psm09  

http://www.respaper.com/padmanabh30/9936-pdf.html# q.4 a
asked by Shriya (psm09) 7 years ago
1

How do we round off numbers to significant figures?Especially if a number contains 0.
Please explain with examples.
Thanks in advance

Selina Revision paper 4
Q  1)b...
$olution plz

Will they reduce marks if i didn't write theta next to sin or any other trigonometric expression???????????????????

A toy is in shape of right circular cylinder with hemisphere on one end and cone on other . The height and diameter of cylinder is 12cm and 4.2 cm.
The radii of hemisphere and cone are same.
Calculate surface area of toy if height of cone is 7 cm.

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