2 years ago

Can anyone help me please? I forget how to do this I need the answer quick

Mathematics

1 answer:

vladimir1956 [14]2 years ago

3 0

Answer:

Domain is R ( all real numbers)

Range is R (all real numbers)

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Factor the following polynomial completely 21x ^ 5 * y ^ 4 - 18x ^ 7 * y ^ 3 + 15x ^ 2 * y ^ 5

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Answer:

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3 years ago

Find the sum.<br> (n+8)+(n−12)<br> =

WARRIOR [948]

Your answer is:
2n-4

Step by step:
(n+8)+(n-12)
Rewrite and remove the parentheses

n+8+n-12
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Therefore your solution is:
2n-4

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3 years ago

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3 years ago

How much of a radioactive kind of niobium will be left after 105 days if you start with 3,920 grams and the half-life is 35 days

MariettaO [177]

Answer:

"490 grams" would be the correct solution.

Step-by-step explanation:

The given values are:

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T = 35 days

Total time,

t = 105 days

As we know,

⇒ $A=A_o(\frac{1}{2} )^{\frac{t}{T} }$

On substituting the values, we get

⇒ $=3920\times (\frac{1}{2})^{\frac{105}{35} }$

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⇒ $=3920\times 0.125$

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2 years ago