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Vlad1618 [11]
3 years ago
12

Which expression equals a number that is NOT a rational number?

Mathematics
1 answer:
Alja [10]3 years ago
8 0

Answer:

A

Step-by-step explanation:

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Plutonium-240 decays according to the function Q(t)=Q(subscripto)e^(-kt) where Q represents the quantity remaining after t years
svetoff [14.1K]
<span>The answer is 9,990 years. Using the exponential decay question, we can figure out how long it will take Plutonium-240 to decay from 27 grams to 9 grams. Setting the equation up looks like this, 9 = 27 e^ (-0.00011 t). From this you get, 0.333333 = e ^(-0.00011 t). Next, you simplify by dividing both sides by the natural log, -1.0986 = -0.00011 t. Finally, you solve by dividing both sides by -0.00011, giving 9,987 years for t, rounded up to 9,990 years.</span>
7 0
3 years ago
Read 2 more answers
What is the advantage of using<br> scientific names, instead of common<br> names?
Aleksandr-060686 [28]

Answer:

the scientific name is the same name around the world and if you use common names they are different around the world

Step-by-step explanation:

8 0
3 years ago
What is (4a²)³÷8a²? can you please answer in normal number form (not like 3²)
AleksandrR [38]

Answer:

8a^4

Step-by-step explanation:

Hello! (4a^2)^3=4\cdot4\cdot4\cdot a^2\cdot a^2\cdot a^2=64a^6because if you multiply numbers with exponents you add the exponents.

Now we've got\frac{64a^6}{8a^2}=8a^4.

Sadly it has to be in exponential form. You can substitute a into the equation if you know a.

3 0
3 years ago
Please help me now :c
nadya68 [22]

On Monday he reads 2 pages, on Tuesday he reads 6 pages (triple of 2: 2 + 2 + 2 = 6), on Wednesday he reads 18 pages (triple of 6: 6 + 6+ 6 = 18), on Thursday he reads 54 pages (triple of 18: 18 + 18 + 18 = 54).

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What is the length of z ?
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5 :::::::::::::)djdjfjs
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