Bonjour quelqun pourrait me donner les réponses de cette exercice + m’expliquer s’il vous plaît bonne journée

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Find the value of the variable and the length of each secant segment.

Find the value of x for which the lines are parallel.