3 years ago

Factor x^2 + 5x + 10 completley

Mathematics

1 answer:

k0ka [10]3 years ago

5 0

This should be the answer.

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What is 162 multiplied by 0.967

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An old bone contains 80% of its original carbon-14. Use the half-life model to find the age of the bone. Find an equation equiva

Ira Lisetskai [31]

Answer:

An old bone contains 80% of its original carbon-14 in 1844.6479 years

Step-by-step explanation:

We know that

half life time of C-14 is 5730 years

so, h=5730

now, we can use formula

$P(t)=P_0(\frac{1}{2})^{\frac{t}{h} }$

we can plug back h

and we get

$P(t)=P_0(\frac{1}{2})^{\frac{t}{5730} }$

An old bone contains 80% of its original carbon-14

so,

P(t)=0.80Po

we can plug it and then we solve for t

$0.80P_0=P_0(\frac{1}{2})^{\frac{t}{5730} }$

$0.80=(\frac{1}{2})^{\frac{t}{5730} }$

$\ln \left(0.8\right)=\ln \left(\left(\frac{1}{2}\right)^{\frac{t}{5730}}\right)$

$t=-\frac{5730\ln \left(0.8\right)}{\ln \left(2\right)}$

$t=1844.6479$

So,

An old bone contains 80% of its original carbon-14 in 1844.6479 years

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5 , 15 , 45 , 135 find the common ratio

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The answer to ur question is number 3

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3 years ago

7.75 as fraction or mixed number

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It would be 7 with 75 over 100....it would look like 7 75/100. then simplify it.

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in all he walks a total 7/8 of a mile to and from school each day. How many miles does he walk in one way ?

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Answer:

The answer is 1.75 miles.

Step-by-step explanation:

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