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LekaFEV [45]
3 years ago
10

How to Graph the solution set -2(x+6)>-4x

Mathematics
1 answer:
arsen [322]3 years ago
5 0

Answer:

use desmos online graphing calculator

Step-by-step explanation:

it helps alot :)

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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


4 0
2 years ago
Read 2 more answers
rita flew from Los Angeles to Boston to visit her aunt, a distance of 4000km. the trip took 5 hours. what was the average speed
Maksim231197 [3]
To find the average speed of the jet, we divide 4000 by 5. When we do so, we get 800. Therefore, the average speed of the jet was 800 kilometers per hour. Hope this helped!
4 0
3 years ago
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In 1989, Dutch ice skater Dries van Wijhe skated 200 km at an average speed of 35.27 km/h. How long was he skating?
Flura [38]

Speed is determined as distance travelled over time. In the problem, given is the speed and distance. Time, we will be distance over speed. Substitute the given to the formula

t=d/s

t = 200 km / 35.27 km/h

t = 5.67 hours

8 0
3 years ago
Element X decays radioactively with a half life of 7 minutes. If there are 980 grams of Element X, how long, to the nearest tent
xeze [42]

Answer:

32.3m

Step-by-step explanation:

Use equation A = Ao(0.5)^(t/t½)

Now input values: 40 = 980(0.5)^(t/7)

rearrange for t: t = [7ln(2/49)]/ / ln(0.5). Then from here, you can extract 32.3 as your answer

8 0
2 years ago
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Carlos put 15% down on a 90000 house what is the mortgage amount he will pay monthly for 30 years at 11.5 %
DiKsa [7]
90,000*.85 = $76,500 = Financing
He will pay <span>$757.57 monthly for 30 years at an interest rate of 11.5%</span>
5 0
3 years ago
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