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Vilka [71]
2 years ago
12

Oakville is a fungal disease that infects oak trees scientists have discovered that a single tree in a small forest is infected

with oak wilt they determined that they can use this exponential model to predict the number of trees in the forest that will be affected after t years
F(t)=e^0.4t
Part a
Graph the function F(t)=e^0.4t


Part b
The scientist believe the Forest will be seriously damaged 121 or more of the force 200 Oak trees are infected by oak wilt according to their model how many years will it take for 21 of the trees to be infected type the correct answer in the box use numerals instead of words round your answer to the nearest 10th

It will take approximately ____ years for 21 of the trees to become infected

Part c
Rewrite the exponential model as a logarithmic model that calculates the number of years, g(x), for the number of infected trees to reach a value of X

Part d
Grab the logarithmic function that models the number of years g(x) for the number of infected trees to reach a value of X

Part e
Compare the features of the grass of functions FNG then use your observations to describe the Relationship between the domain and range of the two functions
Mathematics
1 answer:
Galina-37 [17]2 years ago
4 0

Answer:

I solved part a

To solve this question, we need to solve an exponential equation, which we do applying the natural logarithm to both sides of the equation, getting that it will take 7.6 years for for 21 of the trees to become infected.

PART C

The logarithmic model is: g(x)= in x/0.4

We are given an exponential function, for the amount of infected trees f(x) after x years.To find the amount years needed for the number of infected trees to reach x, we find the inverse function, applying the natural logarithm.

Step-by-step explanation:

mark me brainliest!!

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Answer:

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Step-by-step explanation:

3 0
3 years ago
Ise the terms 4, 12a, 6, 2a, and 24 to make equivalent expressions
Sedaia [141]

Answer:

12a + 24 = 6(2a + 4) is the equivalent expressions

Step-by-step explanation:

Given the terms ; 4, 12a, 6, 2a, and 24

There are two terms with unknown = 12a and 2a

but 12a = 2a x 6 .........(1)

from the last term = 24 = 6 x 4 ...........(2)

add both equation 1 and 2 = 12a + 24

12a + 24 = 6(2a + 4) is the equivalent expressions .

to VERIFY; Use a = 2

substitute into the expression ; LHS = RHS

= 12(2) + 24 = 24 + 24 = 48 (LHS)

FOR RHS = 6(2a+4) = 6(2x2 + 4)

= 6(4+4) = 48

Hence LHS = RHS

6 0
3 years ago
Prove whether the following inferences are valid using the long or short truth table method. If they are invalid, give the count
bezimeni [28]

Answer:

6

Step-by-step explanation:

7 0
3 years ago
Please explain the how you got the answers thanks asap
stich3 [128]

Answer:

a) 90 stamps

b) 108 stamps

c) 333 stamps

Step-by-step explanation:

Whenever you have ratios, just treat them like you would a fraction! For example, a ratio of 1:2 can also look like 1/2!

In this context, you have a ratio of 1:1.5 that represents the ratio of Canadian stamps to stamps from the rest of the world. You can set up two fractions and set them equal to each other in order to solve for the unknown number of Canadian stamps. 1/1.5 is representative of Canada/rest of world. So is x/135, because you are solving for the actual number of Canadian stamps and you already know how many stamps you have from the rest of the world. Set 1/1.5 equal to x/135, and solve for x by cross multiplying. You'll end up with 90.

Solve using the same method for the US! This will look like 1.2/1.5 = x/135. Solve for x, and get 108!

Now, simply add all your stamps together: 90 + 108 + 135. This gets you a total of 333 stamps!

5 0
3 years ago
Find the value of y for the given value of x.
tia_tia [17]
X=30 in the first one and x=-15 in the second one
5 0
3 years ago
Read 2 more answers
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