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3 years ago

K + L + M equals L + M + K what property does this demonstrate

2 answers:

8 0

K + L + M equals L + M + K demonstrates the commutative property, because you can "flip - flop" the numbers around in that property.

lutik1710 [3]3 years ago

6 0

This demonstrates the commutative property because the commutative property is a property where you can switch up the numbers all you want and still get the same answer. This only works with addition and multiplication.

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An author published a book which was being sold online. The first month the author sold 21000 books, but the sales were declinin

Wittaler [7]

Answer: 119,616

You may have to erase the comma when inputting the answer.

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Explanation:

The author sells 21,000 books in the first month.

Then they sell 21,000*(1-0.12) = 21,000*(0.88) = 18,480 in the second month.

Then they sell 18,480*(1-0.12) = 18,480*(0.88) = 16,262.4 = 16,262 in the third month.

And so on. These values follow a geometric sequence with first term a = 21,000 and common ratio r = 0.88

We can think of the 0.88 as 88% of the original value (since losing 12%, we keep the remaining 88%)

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Use the formula below to sum the first 9 terms of the geometric sequence

Plug in a = 21000 and r = 0.88

$S_n = a*\frac{1-r^n}{1-r}\\\\S_9 = 21000*\frac{1-0.88^9}{1-0.88}\\\\S_9 \approx 21000*\frac{0.6835216}{0.12}\\\\S_9 \approx 21000*5.6960133\\\\S_9 \approx 119,616.2793\\\\S_9 \approx 119,616\\\\$

The author sold about 119,616 books over the course of the first nine months.

4 0

2 years ago

What does the digit 6 represent in ?

marshall27 [118]

Answer:

6 is in ten place and its place value is 60, 3 is in ones place and its place value is 3.

4 0

3 years ago

PLEASE HELP THIS IS DUE IN LIKE AN HOUR

Setler [38]

I THINK the slope is y=2/1-3 or y=2/1+(-3) if you're looking for slope intercept form. but I for sure know the slope is positive. this is what the lines look like. hope this helps

3 0

2 years ago

Identify the level of measurement of the data, and explain what is wrong with the given calculation. In a survey, the favorite

Trava [24]

Answer:

The data are at the <u>Nominal</u> level of measurement.

The given calculation is wrong because average (mean) cannot be calculated for nominal level of measurement.

Step-by-step explanation:

The objective here is to Identify the level of measurement of the data, and explain what is wrong with the given calculation.

The data are at the <u> Nominal </u> level of measurement due to the fact that it portrays the qualitative levels of naming and representing different hierarchies from 100 basketball, 200 basketball, 300 football, 400 anything else

b) We are being informed that, the average (mean) is calculated for 597 respondents and the result is 256.1.

The given calculation is wrong because average (mean) cannot be calculated for nominal level of measurement. At nominal level this type of data set do not measure at all , it is not significant to compute their average (mean).

6 0

2 years ago

A dog’s weight dropped to 62 kg after its weight decreased by 7%. What was the dog’s original weight?

Alinara [238K]

Answer:

original weight= mass/weight

62kg/7

Step-by-step explanation:

8.85 original weight

5 0

1 year ago