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timurjin [86]
3 years ago
7

the number of bacteria in a sample can be modeled by the equation yy=75(.8)^xx where y is the number of bacteria and is x the nu

mber of days elapsed. what is the rate of decay?
Mathematics
1 answer:
Schach [20]3 years ago
8 0

Answer:

20 % decay

Step-by-step explanation:

Exponential equations are in the form

y = a * b^x

a is the initial value

b is the growth or decay

b>1 is growth b-1 rate  of growth

b <1 decay  1-b rate of decay

1-.8 = .2

Change to decimal form

20 % decay

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Plz help asap will give 5 stars
saveliy_v [14]

We need to find the hypotenuse of the triangle. We can find that by using the Pythagorean theorem: a² + b² = c²

Solve with the given values of the triangle:

2² + 4² = c²

4 + 16 = c²

20 = c²

√20 = √c²

4.47 ≈ c

Find the area of the square using: A = bh

4.47 * 4.47 = 19.9809

Therefore, the area of the square is approximately 19.9809units²

Best of Luck!

5 0
3 years ago
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What is ​ −3/5 ​ as a decimal?
lidiya [134]
The answer will be.35
3 0
3 years ago
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Using the completing-the-square method, find the vertex of the function f(x) =- 3x2 + 6x − 2 and indicate whether it is a minimu
svp [43]
F(x) = -3x² + 6x - 2
First, we make the coefficient of x² equal to 1
f(x) = -3(x² + 2x - 2/3)

Now, we must make the form a² + 2ab + b²
b = 2x/2x
b = 1

f(x) = -3(x² + 2x + 1² - 1² - 2/3)
f(x) = -3(x² + 2x + 1 - 5/3)
f(x) = -3(x + 1)² - 5

The vertex is (-1 , -5)
And this is the maximum point because the coefficient of the squared term is negative.
6 0
3 years ago
Is this to easy to ask for the answer?<br><br> If so I´m sorry
scZoUnD [109]

Answer:

Ok so this does not make much sense but i think the answer is A. because it makes most sense and if you look up what 3<f means it will give you an explanation on what it means cause I have no idea and at least I tried.

                                    but try A.

5 0
3 years ago
What is 568 / by 490
elena55 [62]

Answer:

It is 1.159

Approximately 1.2

Step-by-step explanation:

6 0
3 years ago
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