Which equation demonstatres the distributive property?

A. 39 + 9 = 45

B. 39 + 3 = 39(12 + 3)

C. 36 times 9 = 9 times 36

D. (12 + 3)3 = 3(12 + 3)

B

Step-by-step explanation:

The distributive property states that:

a(b + c) = ab + ac

Look at the choices:

A: 39 + 9 = 45

There's nothing of this form; in fact, there aren't even any parentheses, so eliminate A.

C: 36 times 9 = 9 times 36

This is saying 36 * 9 = 9 * 36. Again, there aren't any parentheses. Actually, this demonstrates the commutative property.

D: (12 + 3)3 = 3(12 + 3)

There are parentheses, but they're on both sides, so this can't be right, either. In fact, this is the associative property.

By elimination, the answer is thus B.

The rule of distributive property states that [ a(b + c) = ab + ac ].

So, we need to find an answer choice that contains that specific format.

Option A is incorrect because there is nothing to solve for on the right side.

Option B is correct because it contains the same format as the rule stated above.

Option C is incorrect because its the same as [ 36 * 9 = 9 * 36 ] and it's not in the same format as the rule.

Although Option D has half of the format in the rule, it doesn't have the other half containing what it looks like after the distributive property is appplied. So, this is incorrect as well.

Therefore, the answer is B.

Best of Luck!

hey there!

12 is twice as much as 6 because 6 goes into 12 2 times.

since the rabbit is twice as tall, we should multiply the weight of the first rabbit, 0.25, by 2.

0.25 x 2 = 0.5

therefore, the 12 inch chocolate rabbit weighs 0.5 lb, or half a pound.

hope this !

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.