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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:

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Easy geometry <br> I’m stuck pls help<br> Show work :)
Lynna [10]

Answer:

x=9.5

NMR= 18°

Step-by-step explanation:

MN bisects PMN so NMR is equal to PMN making it also 18° so with this info we can now find x

(4x-2)=36

4x=38

x=9.5

8 0
3 years ago
What are the coordinates of the point that is of the way from A to B?
Leokris [45]

Answer:

The coordinates are 3,1

Step-by-step explanation:

i did the assignment and it js correct

8 0
2 years ago
True or false? The quadratic equation 10p2 - 5p = -8 has one solution.
pav-90 [236]

Answer: False

=============================================

Explanation:

I'll use x in place of p.

The original equation 10x^2-5x = -8 becomes 10x^2-5x+8 = 0 after moving everything to one side.

Compare this to ax^2+bx+c = 0

We have

  • a = 10
  • b = -5
  • c = 8

Plug those three values into the discriminant formula below

d = b^2 - 4ac

d = (-5)^2 - 4(10)(8)

d = 25 - 40*8

d = 25 - 320

d = -295

The discriminant is negative, which means we have no real solutions. If your teacher has covered complex or imaginary numbers, then you would say that the quadratic has 2 complex roots. If your teacher hasn't covered this topic yet, then you'd simply say "no real solutions".

Either way, this quadratic doesn't have exactly one solution. That only occurs when d = 0. Therefore, the original statement is false.

6 0
2 years ago
The wolf population of a park was 200 in the year 200. it increased by 20% from 200 to 2005. it then increased by 15% from 2005
leonid [27]
B
 is the anser to this
7 0
3 years ago
Read 2 more answers
Need help with this problem ​
Ira Lisetskai [31]

Answer:

no

Step-by-step explanation:

u will have to explain

6 0
3 years ago
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