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Licemer1 [7]
3 years ago
11

Explain what exponential decay is

Mathematics
2 answers:
Basile [38]3 years ago
5 0

A function in which the dependent variable decreases by the same factor over each unit of time

VARVARA [1.3K]3 years ago
5 0

A quantity X follows an exponential decay (decrease) if it decreases at a rate proportional to its current value. This can be written as

X(t) = X_0 e^{-at}

with t being the time (can be continuous or discrete steps), and "a" being a rate of decay (the larger "a" the faster the decay). X0 is an initial (at time 0) value of the quatity X. Exponential decay is seen frequently in nature (radioactivity, chemical reactions) and economics.


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Write the quadratic in a verbal sentence. PLEASE HELP I’m super stuck!! If you can explain how to do this as well that would hel
saveliy_v [14]

Answer:

n = 8

Step-by-step explanation:

Follow the question when turning the word equation into an equation

Because we know this is a quadratic equation, the product is a result of n multiplied by itself

n^{2} -4=60

Solve for n

n^{2} =64

\sqrt{n^{2} } =\sqrt{64}

n = 8

7 0
3 years ago
5/8 + 3/10 = what would it be
natima [27]
This would equal 37/40 or 0.925 in decimal form
7 0
3 years ago
Read 2 more answers
Asap pleaseeeee!!!!!
maw [93]

Step-by-step explanation:

This is oddly worded I understand. They are asking for the relationship between x and y. Your equation will start with y= You will need to form your equation in a way that will tell you how to find y in relation to x at any given term. I want you to learn and grow so i will just give an example. Take y=x-2 this would mean that y equals whatever x-2 is. If x were to equal 13, y would equal 11 because 13 minus 2 is 11. I hope this helps. I didnt want to give it all away because I wanted you to feel accomplished

7 0
3 years ago
In attempting to solve the system of equations y 3x 2 and 6x 2y 4, John graphed the two equations on his calculator. Because he
andreyandreev [35.5K]
No, he is not correct. The lines are the same, so there are an infinite number of solutions.

When two lines are parallel, then the solution is empty set.
4 0
3 years ago
Derive the equation of the parabola with a focus of (-5,-5) and a directrix of y=7.
adoni [48]

Answer:

y=-\frac{1}{24}(x+5)^2+1

Step-by-step explanation:

The given parabola has its focus at (-5,-5) and the directrix is at: y=7.

The equation of such parabola is given by the formula:

(x-h)^2=-4p(y-k)

The vertex of the parabola is the midpoint of (-5,-5) and (-5,7).

(\frac{-5+-5}{2},\frac{-5+7}{2} )=(-5,1)

The value of p is the distance from the (-5,-5) to (-5,1).

p=|1--5|=6

We substitute the values of the vertex and p into the equation to get;

(x--5)^2=-4(6)(y-1)

(x+5)^2=-24(y-1)

Or

y=-\frac{1}{24}(x+5)^2+1

3 0
3 years ago
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