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3 years ago

HELP ME PLZZ I NEED HELP WITH THIS!!

Mathematics

2 answers:

NARA [144]3 years ago

8 0

A. $618
multiply 103 x6

suter [353]3 years ago

5 0

Answer:

B.$582

Step-by-step explanation:

100.6= $600 this is the 6 months deposits

3.6=$18 is the bank charged in 6 months

$600-$18=$582

If you analyze and understand the problem you can easily solve it

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What rectangle could created from a parallelogram with base of 6 and height of 2

Anon25 [30]

Answer:

see the explanation

Step-by-step explanation:

we know that

Every parallelogram can be made into a rectangle

With a parallelogram with a base of 6 and height of 2 you could create a rectangle with a base of 6 and height of 2

see the attached figure to better understand the problem

5 0

3 years ago

Read 2 more answers

You have $600,000 saved for retirement. Your account earns 5.5% interest. How much, to the nearest dollar, will you be able to p

Nat2105 [25]

9514 1404 393

Answer:

$4127

Step-by-step explanation:

The amortization formula is good for finding this value.

A = P(r/12)/(1 -(1 +r/12)^(-12t))

where P is the amount invested at rate r for t years.

A = $600,000(0.055/12)/(1 -(1 +0.055/12)^(-12·20)) = $4127.32

You will be able to withdraw $4127 monthly for 20 years.

3 0

3 years ago

I am weighed on scales which have a 10% error, that is, the scales show me 10% heavier than my real weight. If I actually weigh

stiks02 [169]

Remember you said the scale shows you 10% heavier.

So that's an increase of 10%

So value = 10% + 100% = 110%

So scale would show 110% of 82

110% of 82

= (110/100) * 82

= 1.1 * 82

= 90.2

OR

We can simply find 10% of 82 and add it to the original 82.

10% of 82

(10/100) * 82

0.1 * 82 = 8.2

8.2 + 82 = 90.2 Same answer as before.

So scale shows 90.2 kg.

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3 years ago

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Researchers are interested if a school breakfast program leads to taller children. Assume that the population of all 5 year-old

DedPeter [7]

Answer:

$39-1.96\frac{1}{\sqrt{25}}=38.608$

$39+1.96\frac{1}{\sqrt{25}}=39.392$

So on this case the 95% confidence interval would be given by (38.608;39.392)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X=39$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma=1$ represent the population standard deviation

n=25 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

The margin of error is given by:

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

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a tabel to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that $z_{\alpha/2}=1.96$