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777dan777 [17]
3 years ago
12

Which expression can be used to model the phrase “ the sum of three and a number”?

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
5 0

Answer:

x + 3

Step-by-step explanation:

A 'sum' means addition, 'a number' is represented by a variable, in this case, I chose 'x'.  I could have picked any variable I wanted.

The sum of three and a number means:  three plus some number, which is

 3 + x       in math language.     We write variables before constants, so it gets

                  rewritten as x + 3

Oliga [24]3 years ago
5 0

Answer:

A) 3 + x

Step-by-step explanation:

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