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Finger [1]
2 years ago
8

Help if correct will give brainiest

Mathematics
2 answers:
Tpy6a [65]2 years ago
7 0

Answer:

the answer is Z all you have to do is move it left 4 times and then up 6 times

kakasveta [241]2 years ago
3 0

Answer:

x

Step-by-step explanation:

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Carbon-14 is a radioactive isotope that has a half-life of 5,730 years. Approximately how many years will it take for carbon-14
PilotLPTM [1.2K]

Answer:

<em>Carbon-14 will take 19,035 years to decay to 10 percent.</em>

Step-by-step explanation:

<u>Exponential Decay Function</u>

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay.

An exponential decay can be described by the following formula:

N(t)=N_{0}e^{-\lambda t}

Where:

No  = The quantity of the substance that will decay.

N(t) = The quantity that still remains and has not yet decayed after a time t

\lambda     = The decay constant.

One important parameter related to radioactive decay is the half-life:

\displaystyle t_{1/2}=\frac {\ln(2)}{\lambda }

If we know the value of the half-life, we can calculate the decay constant:

\displaystyle \lambda=\frac {\ln(2)}{ t_{1/2}}

Carbon-14 has a half-life of 5,730 years, thus:

\displaystyle \lambda=\frac {\ln(2)}{ 5,730}

\lambda=0.00012097

The equation of the remaining quantity of Carbon-14 is:

N(t)=N_{0}e^{-0.00012097\cdot t}

We need to calculate the time required for the original amout to reach 10%, thus N(t)=0.10No

0.10N_o=N_{0}e^{-0.00012097\cdot t}

Simplifying:

0.10=e^{-0.00012097\cdot t}

Taking logarithms:

ln 0.10=-0.00012097\cdot t

Solving for t:

\displaystyle t=\frac{log 0.10}{-0.00012097}

t\approx 19,035\ years

Carbon-14 will take 19,035 years to decay to 10 percent.

6 0
3 years ago
Read 2 more answers
What is 0.4% writen as a decimal, and why thanks :)
Alex777 [14]
<span>To convert a percentage to a decimal divide by 100: 0.4% = 0.4 ÷ 100 = 0.004

</span><span>0.04</span>
4 0
3 years ago
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A cab company charges a $3 boarding rate in addition to its meter which is $2 for every mile. What is the equation?
STALIN [3.7K]
3+2(x) x is for miles
8 0
2 years ago
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PLEASE HELP WILL GIVE BRAINLY POINTS!!!!
Afina-wow [57]

Conner played a total of  6 +3 + 6 = 15 games. He won or tied 6+ 3 = 9 games.

His percentage is 9/15 = 0.6 x 100 = 60%

April played 5+7+4 = 16 games and won or tied 5 +7 = 12 games.

Her percentage is: 12/16 = 0.75 x 100 = 75%

Tony played 20 games and won or tied 14.

His percentage is: 14/20 = 0.7 x 100 = 70%

April has the highest percentage so she is the one who should play.

8 0
3 years ago
3×-5=16 and 3×=21
larisa [96]

Step-by-step explanation:

because we can also find out the value of x in second equation like this

3x=21

x=21/3

x=7

8 0
2 years ago
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