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eduard
3 years ago
9

Exercice 1. Une espèces animale est menacée depuis 1950. Le nombre d’animaux, en millions, de cette espèce est donné par la fonc

tion
f(t) = 35(0.948)t
où t est le temps écoulé depuis 1950.
1. Quel est le sens de variation de la fonction f ? Justifier.
2. Calculer f(0) et f(50) (on arrondira `a 10−2 près si nécessaire)
3. Calculer le taux d’´évolution global du nombre d’animaux de cette espèce en 50 ans. S’agit-il
d’une augmentation ou d’une diminution ?
4. Calculer le taux d’évolution moyen du nombre d’animaux de cette espèce sur les 50 ans.
5. On considère qu’une espèce est en voie de disparition s’il en reste très peu de spécimen de
cette espèce (disons 1 million). A l’aide de la calculatrice, dire si cette espèce sera considérée
comme étant en voie de disparition `a partir d’une certaine année ? Si oui, quelle année ?
Mathematics
1 answer:
a_sh-v [17]3 years ago
4 0

Answer:

what?

Step-by-step explanation:

You might be interested in
Please help!! I have 10 minutes left!!
Lelu [443]

1. Answer:

30 is your frequency

Step-by-step explanation:

Frequency in this case would be the number of winners. So to find the frequency we would need to add up the total number of winners in the histogram.

So, 0 + 2 + 5 + 6 + 8 + 5 + 4 = 30

2. Answer:

6 (you already put that)

3.

The median can be found in the 50-59 bin or interval.

5 0
2 years ago
What is <img src="https://tex.z-dn.net/?f=%5Cfrac%7B14-7x%7D%7B7%7D" id="TexFormula1" title="\frac{14-7x}{7}" alt="\frac{14-7x}{
BartSMP [9]

Answer:

<h2><u><em>2-x</em></u></h2>

Step-by-step explanation:

(14 - 7x)/7 =

[7(2-x)]/7 =

2-x

4 0
2 years ago
A bag contains three marbles, eight blue marbles and nine red marbles. If the marbles are picked at random, what is the probabil
Phoenix [80]

The probability of obtaining two blue marbles without replacement is equal to 0.15.

We are given that:

The number of yellow marbles = 3

Number of red marbles = 9

Number of Blue marbles = 8

Total marbles = 3 + 9 + 8

Total marbles = 20

Now, we have to calculate the probability of obtaining two blue marbles without replacement.

The probability will be:

P( obtaining two blue marbles without replacement )  = 8 / 20 × 7 / 19

P( obtaining two blue marbles without replacement )  = 56 / 380

P( obtaining two blue marbles without replacement )  = 0.15

Therefore, the probability of obtaining two blue marbles without replacement is equal to 0.15.

Learn more about probability here:

brainly.com/question/24756209

#SPJ9

5 0
1 year ago
Answer ASAP for BRAINLIEST (NO LINKS OR I REPORT)
Westkost [7]

Answer:

radius = 3 feet

Step-by-step explanation:

V = 1/3πr²h

15π = 1/3πr²·5

you can divide each side by 5π to get:

3 = r²/3

r² = 9

r = \sqrt{9} which is 3

8 0
3 years ago
Read 2 more answers
Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage r
kirza4 [7]

Answer:

6

Step-by-step explanation:

5 0
2 years ago
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