(a) The Cartesian coordinates of a point are (1,1). (i) Find polar coordinates (r,θ) of the point, where r>0 and 0≤θ<2π. r= θ= (ii) Find polar coordinates (r,θ) of the point, where r<0 and 0≤θ<2π. r= θ= (b) The Cartesian coordinates of a point are (23–√,−2). (i) Find polar coordinates (r,θ) of the point, where r>0 and 0≤θ<2π. r= θ= (ii) Find polar coordinates (r,θ) of the point, where r<0 and 0≤θ<2π. r= θ=

a c

step-by-step explanation:

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)

6 adults and 9 children went.

a + c = 15

12a + 9c = 153

12(6) + 9(9) = 153

72 + 81 = 153