DM de décembre 4ème Exercice n°1:
Un train roule à 150km/h. Au bout d'une heure, il peut augmenter sa vitesse de 10% pendant 1 h 30min,
mais il doit ensuite la réduire de 20% pendant 2 h 30min.
Durant la dernière demi-heure il doit limiter sa vitesse à 100 km/h.
Quelle distance a-t-il parcourue ?
Exercice n°2 :
Les terrains et ont la même aire.
Le terrain (ABCD) est tel que : AD = 52 m: DC = 25 m et BC = 60 m. Le terrain est un carré.
Quel est celui qui a le plus grand périmètre ?
52
D
B
25
60
С

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

all group life insurance is term insurance. actually it is annual renewable term and it is rated on the average age and claims experience of the entire group, which is called "experience rating." remember, this type of insurance has a 31-day grace period and is convertible to whole life upon leaving employment. a contributory group plan requires that both the employer and the employees pay part of the premium. at least 75% of those eligible must participate, so the group is sure to get most of the healthy employees as well as those that are sick.

step-by-step explanation:

answer: 5

step-by-step explanation:

1 1/7 hope i

step-by-step explanation:

8/7 = (1 * 7 + 1) / 7 = 1 + 1/7 = 1 1/7