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3 years ago

If |x| = 7 and |y| = 13, then which of the following could be equal to x + y?

Mathematics

2 answers:

vichka [17]3 years ago

8 0

Answer:

Answer shown from explanation

Step-by-step explanation:

|x| means modulus of x such that positive or negative value of x evaluates to a positive value.

|x| = 7 is the same as x = -7 and x = 7

Similarly,

|y| = 13 is the same as y = -13 and y= 13;

Hence the possible values are;

7+13= 20

7-13= -6

-7-13= -20

-7 + 13 = 6

likoan [24]3 years ago

6 0

Answer:

20, -20, -6, 6

Step-by-step explanation:

x and y could be negative or positive.

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