13. a) In an orthogonal system of origin O and axes x'Ox and y'Oy locate the points :
M(0;2), N(2;0), P(0;-2) and Q(-2;0)..
b) Determine the nature of the triangle OMN
and justify your answer . Deduce the
measures of the angles of this triangle
c) Same question for the triangle MOQ,
d) Determine the nature of MNPO and find
its area
107​

The two-way table shows the number of people whose hobbies are reading or solving puzzles and who either ride a motorcycle or don’t ride a motorcycle. among people whose hobby is reading, what is the relative frequency of not riding a motorcycle? express your answer as a decimal, and round it to the nearest hundredth if necessary. enter your answer in the box. reading solving puzzles ride a motorcycle 7 3 don't ride a motorcycle 5 9

896.31 cm= km 100cm = 1m 1000m = 1km a) 0.0089631 b) 0.0089631 c) 8.9631 d) 89.631

The suare root of 9x plus 7 plus the square rot of 2x equall to 7