Mathematics, 18.09.2019 18:00, 23basu3

6
o p = 4 6 ) r =
(b) find the determinant of the matrices: -
á = 7 12
(ii)
l-8 15
b
=
(c) given the data 6. 12.721210 and 20.calculate the mean value
5. (a) a survey was conducted of 200 children under 10 years to see
how many visits the made to the clinic during the course of the
year. the results were recorded as shown below: -
no. of 5 6 7 8 9 10 11 12 13 14
visits
frequency 16 33 47 54 31 10 4
calculate the mean and draw the cumulative frequency curve.
15
(6) the angle of elevation of the top of a tree from point a and b 25
and 56° respectively. given that a and b are on the horizontal
ground and in a straight line with the tree, and that b is 30m fro
the foot of the tree. find: - (i) the height of the tree
(ii) the distance of a from b.

Answers: 1

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6
o p = 4 6 ) r =
(b) find the determinant of the matrices: -
á = 7 12
(ii)