3. Identify the property used: (9+4) +7=(4 + 9) +7 A. Commutative Property of Addition
B. Associative Property of Addition
C. Distributive Property
D. Identity Property

B. Associative property of addition.

Step-by-step explanation:

The identity property involves zeros, so we know it's not that one.

The distributive property is when you have a number, and then two other numbers in parenthesis and you multiply the numbers by the number outside the parenthesis. (ex: 4(1 + 3) you would do 4 x 1 and 4x 3 and add them together) and we know it's not that one because it doesn't show the distribution.

The associative property states that you can re-group numbers and you will get the same answer, and since it has parenthesis, we know it's this one.

The commutative property states that you can move numbers around and still arrive at the same answer.

the clues that signal the reader should change tone are the punctuation marks, the grammatical signs. for example, the quotation marks at the beginning of something someone else said literally or the exclamation marks.

the tone of the first line of dialogue until "gettysburg" is a kind tone, a tone of advise. the narrator is trying to the other person in doing something he or she obviously is finding hard to do by giving a piece of advise and bringing up a memory of a successful similar case.

the clue that the reader understand how to read the word "bang" is the exclamation mark. it gives the word a surprise tone, a strong accent.

the best tone for reading the word "bang" is an exciting tone, a surprise one, even a loud one.

the words that should be read with a formal tone are the ones that give factual information. the sentence: mister lincoln couldn't think of anything to say at the gettysburg" gives information about an event and it needs to be read formally, also, when the narrator wants to transmit calmness, a formal and slow tone is needed, because people also transmit messages with the vibrations of our voices and tones.

step-by-step explanation:

your mom