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Marrrta [24]
3 years ago
8

los trabajadores de una mina se encuentran a 20 metros bajo tierra .Si excavan 3 metros desde alli suben otros 8 metros para cog

er una caretilla a que altura estaba la carretilla
Mathematics
1 answer:
Yakvenalex [24]3 years ago
8 0

Step-by-step explanation:

la carretilla estaba a unos 15 metros de altura

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Which of the following numbers is irrational?
zalisa [80]

Answer:

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If you invest $100,000 in an account earning 8% interest compounded annually, how long will it take until the account holds $300
Monica [59]

We have been given that you invest $100,000 in an account earning 8% interest compounded annually. We are asked to find the time it will take the amount to reach $300,000.

We will use compound interest formula to solve our given problem.

A=P(1+\frac{r}{n})^{nt}, where,

A = Final amount after t years,

P = Principal amount,

r = Annual interest rate in decimal form,

n = Number of times interest is compounded per year,

t = Time in years.  

8\%=\frac{8}{100}=0.08

300,000=100,000(1+\frac{0.08}{1})^{1\cdot t}

300,000=100,000(1.08)^{t}

\frac{300,000}{100,000}=\frac{100,000(1.08)^{t}}{100,000}

3=(1.08)^{t}

(1.08)^{t}=3

Let us take natural log on both sides of equation.

\text{ln}((1.08)^{t})=\text{ln}(3)

Using natural log property \text{ln}(a^b)=b\cdot \text{ln}(a), we will get:

t\cdot \text{ln}(1.08)=\text{ln}(3)

\frac{t\cdot \text{ln}(1.08)}{\text{ln}(1.08)}=\frac{\text{ln}(3)}{\text{ln}(1.08)}

t=\frac{1.0986122886681097}{0.0769610411361283}

t=14.274914586

Upon rounding to nearest tenth of year, we will get:

t\approx 14.3

Therefore, it will take approximately 14.3 years until the account holds $300,000.

7 0
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Step-by-step explanation:

apparently it is adding 3 every row

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