Un conducteur roule pendant 1 h 48 min à la vitesse moyenne de 80km/h, puis pendant 42 minutes à la vitesse moyenne de 90 km/h.
1)Combien de temps a-t-il roulé ?
2)Quelle distance a-t-il parcourue au total ?
3

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?