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3 years ago

What is the equation of the line of best fit for these data? Round the slop

Mathematics

1 answer:

Zarrin [17]3 years ago

8 0

Answer:

the equatopion of the line of the best fit for this data will be 15

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pls help meh.. Which of the following statements best describes the effect of replacing the graph of y = f(x) with the graph of

pantera1 [17]

Answer:

Step-by-step explanation:

4 0

4 years ago

he radioactive element carbon-14 has a half-life of 5750 years. A scientist determined that the bones from a mastodon had lost

elena-s [515]

Answer:

The bones were 12,485 years old at the time they were discovered.

Step-by-step explanation:

Amount of the element:

The amount of the element after t years is given by the following equation, considering the decay rate proportional to the amount present:

$A(t) = A(0)e^{-kt}$

In which A(0) is the initial amount and k is the decay rate, as a decimal.

The radioactive element carbon-14 has a half-life of 5750 years.

This means that $A(5750) = 0.5A(0)$ , and we use this to find k. So

$A(t) = A(0)e^{-kt}$

$0.5A(0) = A(0)e^{-5750k}$

$e^{-5750k} = 0.5$

$\ln{e^{-5750k}} = \ln{0.5}$

$-5750k = \ln{0.5}$

$k = -\frac{\ln{0.5}}{5750}$

$k = 0.00012054733$

$A(t) = A(0)e^{-0.00012054733t}$

A scientist determined that the bones from a mastodon had lost 77.8 % of their carbon-14. How old were the bones at the time they were discovered?

Had 100 - 77.8 = 22.2% remaining, so this is t for which:

$A(t) = 0.222A(0)$

Then

$0.222A(0) = A(0)e^{-0.00012054733t}$

$e^{-0.00012054733t} = 0.222$

$\ln{e^{-0.00012054733t}} = \ln{0.222}$

$-0.00012054733t = \ln{0.222}$

$t = -\frac{\ln{0.222}}{0.00012054733}$

$t = 12485$

The bones were 12,485 years old at the time they were discovered.

8 0

3 years ago

Identify the variables in the following. A) 4r- 3 B) x + 7

Doss [256]

A). 4r − 3

There are no like terms.

Answer:

= 4r − 3

B). x + 7

There are no like terms.

Answer:

= x + 7

4 0

3 years ago

What is the solution to the system of equations? - (8. –1) 0 (s. 2) 19 (3:5)

Oksana_A [137]

Answer:

Step-by-step explanation: You have to do the distributive property to get the answer.

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4 years ago

I WILL GIVE BARINLEST WHO HELP ME 3

Pavlova-9 [17]

Answer:

whats the question

Step-by-step explanation:

7 0

3 years ago

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