Final test of the 9th Grade
What is the intersection of the intervals
Determine the solutions of
The solution(s) of the equation
x = -3
x = -3 ou x = 3
Is the function
Determine the set of solutions of the following inequation
How much is
Are the vectors
Are the points
on a line ?
Are two orthogonales lines always perpendicular ?
In a class, 8 pupils are between 1,50m and 1,60 m tall, 14 pupils are between 1,60m and 1,70m tall, 10 pupils are between 1,70m and 1,80m tall. What is approximately the average height of the pupils ?