1 Les tables de valeurs suivantes sont associées à des situations de variation inversement
proportionnelle. Trouve la valeur du produit constant. Complète ensuite les tables de valeurs.
c) Produit constant :
a) Produit constant:
b) Produit constant:
2 x 87 = 174
х
y
Х
y
x
y
1,5
45
2
126
2
87
15
4,5
84
3
3
58
10
4
4
1744= 43,5
12
6
6
1746 = 29
15
36
24
174-24 = 7.25
f) Produit constant :
e) Produit constant:
d) Produit constant:​

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?