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2 years ago

11

edward deposited $5,500 into a savings account 2 years ago. The simple interest rate is 4%. How much money did edward earn in

interest?

2 answers:

vovangra [49]2 years ago

8 0

Jxjsjdnxncbbdnxbdhdhxhxhhxjdj hello this is my mom phone

alexira [117]2 years ago

3 0

Answer:

$440 in interest

Step-by-step explanation:

5500*0.08 (because 4% interest * 2 years)

440

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Jones has a 100-acre farm. he sells it to a developer who is going to build houses. the developer will use 10% of the land for s

Sholpan [36]

The first thing we must do is find the amount of land that will be used for the 120 lots.
We must remember that 10% of the land will not be used for the lots.
We have then:
$100 - (0.10) * (100) = 100 - 10 = 90 acres.
$
Then, we must consider the following conversion of units:
$1 acre = 43560 ft ^ 2
$
Applying the conversion we have:
$(90) * (43560) = 3920400 ft ^ 2
$
Then, the amount of square feet for each lot is given by:
$3920400/120 = 32670 ft ^ 2
$
Answer:
There will be 32670 square feet in each lot.

6 0

3 years ago

A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:

marin [14]

Answer:

$Range = 85$

$\sigma = 28.71$

$Interval = [666.78, 781.62]$

Step-by-step explanation:

Given

The data for 25 undergraduates

Solving (a): Range and Standard deviation

The range is:

$Range = Highest - Least$

From the dataset:

$Highest = 772$

$Least = 687$

So:

$Range = Highest - Least$

$Range = 772-687$

$Range = 85$

The standard deviation is:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n}}$

First, calculate the mean

$\bar x = \frac{769 +691 +............+715}{25}$

$\bar x = \frac{18105}{25}$

$\bar x = 724.2$

So, the standard deviation is:

$\sigma = \sqrt{\frac{(769-724.2)^2 +(691-724.2)^2 +(699-724.2)^2 +(730-724.2)^2 +............+(715-724.2)^2}{25}}$

$\sigma = \sqrt{\frac{20604}{25}}$

$\sigma = \sqrt{824.16}$

$\sigma = 28.71$

Solving (b): The interval of the 95% of the observation.

Using the emperical rule, we have:

$Interval = [\bar x - 2*\sigma, \bar x+ 2*\sigma]$

$Interval = [724.2 - 2*28.71, 724.2 + 2*28.71]$

$Interval = [666.78, 781.62]$

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2 years ago

What is the area of this rectangle?

Pani-rosa [81]

Answer:

39

Step-by-step explanation:

You find the area by multiplying the length times the height which is what I did 13 x 3 = 39

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Step-by-step explanation:

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