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2 years ago

If $2000 is invested at 4% per annum compounded semiannually, how much is in the account after 8 years?

Mathematics

1 answer:

TiliK225 [7]2 years ago

6 0

Hope this helps
final balance $2,745.57

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the recipe call for exactly 4 cups of sugar. Problem is that you have two buckets. One is 5 cups the other is 3 cups. using thes

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For 0°<θ<-180° which of the primary trigonometric functions may have positive values?

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sine and cosecant.

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3 years ago

A recent survey of 252 customers, selected at random from a database with 12,861 customers, found that 208 are satisfied with th

inysia [295]

Answer:

The upper bound of a 99% confidence interval for the percentage satisfied for all customers in the database is 88.70%.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

Sample of 252 customers, 208 are satisfied:

This means that $n = 252, \pi = \frac{208}{252} = 0.8254$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8254 + 2.575\sqrt{\frac{0.8254*0.1746}{252}} = 0.8870$

As a percentage:

100%*0.8870 = 88.70%

The upper bound of a 99% confidence interval for the percentage satisfied for all customers in the database is 88.70%.

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3 years ago

3(x+6)-x=86<br> what is x?<br> pLS hELP

Ede4ka [16]

Answer:

x = 34

Step-by-step explanation:

3(x+6)-x=86

3x+18-x =86

2x+18 =86

2x =68

x=34

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