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Mamont248 [21]
3 years ago
15

Simple interst for $750 at 6.5 interest for 3 years

Mathematics
2 answers:
Usimov [2.4K]3 years ago
8 0
To find the simple interest, we multiply 750 × 0.065 × 3 to get that: $146.25
ser-zykov [4K]3 years ago
4 0
Considering that you mean 6.5% interest yearly, the interest gained would be:
$146.25

and the total amount would be $896.25

Hope this helped!
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Over the last 3 years, salesperson A has earned twice as much as salesper B who in turn has averaged 50% more than salesper C. T
bekas [8.4K]
<span>A has earned twice as much as B so: A=2B
B has averaged 50% more than C so: B=C+0.5C
Combined is 220K, So A+B+C=220,000

The last equation can be re-written as:
2B+1.5C+C=220K
AND since A=2B, it can be rewritten again as:
3C+1.5C+C=220K

Now you can get C finally, since B=1.5C you can get B, then to get the average, just divide that by 3 (years) and you should be done.
So B = 60000 for 3 years</span>
4 0
3 years ago
Read 2 more answers
If you want to be 95​% confident of estimating the population mean to within a sampling error of plus or minus3 and the standard
Aleksandr [31]

Answer:

The sample size required is at least 171

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

What sample size is​ required?

A samle size of at least n is required, in which n is found when M = 3, \sigma = 20

So

M = z*\frac{\sigma}{\sqrt{n}}

3 = 1.96*\frac{20}{\sqrt{n}}

3\sqrt{n} = 20*1.96

\sqrt{n} = \frac{20*1.96}{3}

(\sqrt{n})^{2} = (\frac{20*1.96}{3})^{2}

n = 170.7

Rouding up

The sample size required is at least 171

5 0
3 years ago
Please help!!! thank you
Dahasolnce [82]
That’s the answer because I couldn’t type it out! Hope it helped!

8 0
3 years ago
Read 2 more answers
18÷90.54 I need help I have I minute!!!
Tcecarenko [31]
0.19880716 should be your answer
Sorry if wrong
5 0
3 years ago
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Math help please :) &lt;3
Sveta_85 [38]
The greatest common factor of 28 and 36 is 4.
4 0
3 years ago
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