Wendy says that she can find the sale price of an item by multiplying by the difference of 100% and the percent of the sale. Is Wendy correct? Explain and give an example.

Yes

Step-by-step explanation:

If it's a 20% discount,

She has to pay 100-20 = 80% of the marked prices.

Wendy is correct.

Step-by-step explanation:

Let's say an item costs $100, and the discount is 20%.

More common method:

The more common way to find the sale price is to find the amount of the discount, and then subtract it from the original price.

To find the amount of the discount, find 20% of $100:

20% of $100 = 0.2 * $100 = $20

The discount is $20.

Now we subtract $20 from $100 to find the sale price.

$100 - $20 = $80

The sale price is $80.

Wendy's method:

Now let's use Wendy's method on the same item and find its sale price.

The discount is 20%.

The difference between 100% and 20% is:

100% - 20% = 80%

Now we multiply the difference, 80%, by the original price.

80% * $100 = 0.8 * $100 = $80

The sale price is $80.

We used Wendy's method and we got the same answer.

Wendy is correct.

Explanation:

The original price of the item is 100% of the price since 100% means the entire amount. The percent of the sale is x%. The item costs y.

Common method:

Sale price = y - x%y

Wendy's method:

Sale price = (100% - x%)y

Keep in mind that 100% = 1 and x% = 0.01x.

Common method:

y - x%y = y - 0.01xy

Sale price = y - 0.01xy

Wendy's method:

(100% - x%)y = (1 - 0.01x)y = y - 0.01xy

In both cases, the sale price is y - 0.01xy, so Wendy's method works.

see below

step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.  

-2 is the right