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Vilka [71]
3 years ago
13

PLEASE ANSWER!! WILL MARK AS THE BRAINLIEST!! EXPLAIN IT TO ME BECAUSE I AM NOT UNDERSTANDING ANYTHING!!!!!

Mathematics
2 answers:
Gnoma [55]3 years ago
7 0
Short Answer D
The first thing that must be done is to see what e raised to a minus number does. Try a real simple example

y = 5e^-0.05
Put that into your calculator. You get
5 * 
e 
^ 
- 0.05
= 

The result is getting smaller. The answer I get is 4.7 which  is less than 5. That means that our insect population is going to go down. What will happen if you change that -0.05 to a plus 0.05 Try it again.

5*e^0.05 = I get 5.25 The number is increasing 5.25 > 5. 

What have you done? You have just eliminated two possible answers. a and c will both make 26 go up. You don't want either of them.

So now we need to look at B and D 
B won't work. Remember that t is a number in years. Any other number represents millions of insects. So the second equation must be written as P>2 The population must be kept at 2 million insects. Until then the first equation decreases the insect's numbers.

The answer is D
Romashka-Z-Leto [24]3 years ago
4 0
P represents the population in millions.

An exponential function with a positive exponent means function increases with time t.
An exponential function with a negative exponent means function decreases with time t.
So we're looking for a function with a NEGATIVE exponent.

Also, since question says population will remain CONSTANT at the minimum of 2 (millions) insects, so it should not be a function of time t.
Therefore this condition should be written as P>=2 (millions) [and not 2t].

Given the above  information, it will be up to you to choose the correct answer choice.

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Answer:

all inputs are equal to <u>3</u>

Step-by-step explanation:

f(x) = 3 \\  =  3 \times 1\\  = 3  \times  {x}^{0}  \\ anything \: raised \: to \: 0 \: is \: 1 \\

\\  substituting \: any \: value \\  \: of \: x \: in \: f(x) \\ f(3) = 3 \times  {3}^{0}  \\  = 3 \times 1 \\ =  3 \\

\\ similarly \: all \: values \: of \: x \: will \\ give \: 3

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2 years ago
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Step-by-step explanation:

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Two triangular roofs are similar. The ratio of the corresponding sides of these roofs is 2:3. If the altitude of the smaller roo
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Answer:  6.75 feet

Step-by-step explanation:

Since, the ratio of the side of the similar triangle = 2 : 3

Thus, by the property of similar triangle,

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2 x = 4.5

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Solution:

Given;

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Using the identities;

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\begin{gathered} \cos\frac{\pi}{2}\cos\frac{\pi}{3}+\sin\frac{\pi}{2}\sin\frac{\pi}{3}=\cos(\frac{\pi}{2}-\frac{\pi}{3}) \\  \\ \cos\frac{\pi}{2}\cos\frac{\pi}{3}+\sin\frac{\pi}{2}\sin\frac{\pi}{3}=\cos(\frac{\pi}{6}) \end{gathered}

CORRECT OPTION: A

6 0
1 year ago
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