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3 years ago

What is the definition of exponential decay?

Mathematics

2 answers:

tresset_1 [31]3 years ago

8 0

Answer:

Exponential Decay -

A quantity is subject to exponential decay if it decreases at a rate proportional to its current value.

Step-by-step explanation:

Hope this answered your question ^^

rodikova [14]3 years ago

6 0

The amount that decreases is proportional to the size of the population

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If y varies directly as x and x = 9 when y = 15 , find y when x = 33

poizon [28]

This would practically be very reliable of course. We can see in the sentence above that y and x, and x and y are both depending on each other. So, now that this has been considered, we can see that whenever "x" would be a certain number, this would show you that "y" would also be a certain number, and depending how much "x" or "y" would move, it would also change these variable no matter how they move.

This would be a matter of division. As we can see above on how 9 and 15 could be divisible down the line as they multiply.

Therefore, we would then see how many times would "x" which is 9, how many times that would go in 33.

Let's start!

$\boxed{33\div9= \ (3.6)}$

We take this "3.6" away from this, and we would plug it into "y".

We then do the following:

$\boxed{3.6*15=55}$

Therefore, when "x" = 33, "y" would then equal 55.

Your answer: $\boxed{\boxed{\bf{y=55}}}$

5 0

3 years ago

Read 2 more answers

A coin contains 999 grams of nickel and 161616 grams of copper, for a total weight of 252525 grams.

Sedbober [7]

Answer:

X=64%

Step-by-step explanation:

The percentage of Cooper in the coin is 64%

How do you come to this conclusion?

252525--100%

161616--X%

Now you can use the cross rule: X=(161616x100)/252525

Check it out now X=64%

3 0

3 years ago

Fran has a plank of wood 4.65 meters long. She wants to cut it into pieces 0.85 meters long. How many pieces of wood that length

DochEvi [55]

5 pieces. 4.65÷0.85=5. so u divide and ur answer is 5

3 0

3 years ago

The second term in a geometric sequence is 20. The fourth term in the same sequence is 11.25. What is the common ratio

damaskus [11]

Let $a_n$ be the n'th term of the sequence.

so $a_1$ is the first term, $a_2$ the second term and so on...

In a geometric sequence with $a_1=c$ , and common ratio r, the terms are as follows:

$a_1=c$
$a_2=cr$
$a_3=c r^{2}$
$a_4=c r^{3}$
.
.
that is, each term is its previous term times the common ratio r.

In our example

$a_2=cr=20$ and $a_4=c r^{3}=11.25$

$\frac{a_2}{a_4}= \frac{cr}{c r^{3}}= \frac{1}{ r^{2}}= \frac{20}{11.25}= 1.778$

so $r^{2} =1/1.778=0.56$

$r= \sqrt{0.56}= 0.75$

Answer: r=0.75

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3 years ago

Patrick is reading a book about the history of baseball. The book is 210 pages long; 140 of the pages have illustrations on them

taurus [48]

Answer:

Probability: 140/210= 14/21

8 0

3 years ago