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krek1111 [17]
3 years ago
13

simple interest = P × r × t Perry earns 5 percent simple interest annually on his savings account. How much interest will Perry

earn each month on $650?
Mathematics
1 answer:
vagabundo [1.1K]3 years ago
5 0
 P = $650
r = 5% annually = 0.05
t = 1 month = 1/12 year

SI = Prt = 650 * 0.05 * 1/12 = $2.7
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Stock prices fell 250 points one day and 60 points the next day. What is the average change in stock prices over the two days
arsen [322]

Answer:

the average change in stock prices over the two days is -155

Step-by-step explanation:

The computation of the average change in stock price over the two days is shown below:

= (-One day points - second day points) ÷ number of days

= (-250 points - 60 points ) ÷ 2 days

= -310 points ÷ 2 days

= -155

Hence, the average change in stock prices over the two days is -155

We simply applied the above formula so that the average change could come

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≈12.8

Step-by-step explanation:

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A 98% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit. A prelimina
BaLLatris [955]

Answer:

n = (\frac{2.326*1.7}{0.3})^2= 173.73

And the value for n rounded up would be n = 174

Step-by-step explanation:

We have the following info given:

s= 1.7 previous estimation for the deviation

ME=0.03 the margin of error desired

Conf =0.98 represent the confidence

The Margin of error is given by:

ME = z_{\alpha/2} \frac{\sigma}{\sqrt{n}}

If we solve for the value of n we got:

n= (\frac{z*\sigma}{ME})^2

For this problem we know that the confidence is 98% so then the significance level would be \alpha=0.02 and the critical value would be:

z_{\alpha/2}= 2.326

And replacing we got:

n = (\frac{2.326*1.7}{0.3})^2= 173.73

And the value for n rounded up would be n = 174

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3 years ago
Which type of line of symmetry does the figure have ?
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E. Penial

Step-by-step explanation:

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(x - 1000) / x *100 = 60%
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