1. Un coureur de demi-fond parcourt 850 m en 3 minutes 12 secondes. Calculer sa vitesse moyenne en m/s. Arrondir à l’unité.
2. Juliette est en voiture et roule à une vitesse moyenne de 120 km/h.
a. Quelle distance parcourt-elle en 4 h 12 min ?
b. Elle part de Givors à 16h12 et parcourt 319 km. A quelle heure arrive-t-elle ?
Donner le résultat en heure et en minutes

Jayda's house is located at (1, 5). she can walk in a straight line to get to cristian's house. a fast-food restaurant is located at (11, 0) and partitions the way from jayda's house to cristian's house by a ratio of 5: 1. find the coordinate of cristian's house. me . im a little stuck

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)