harpazo
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Section R.2
Algebra Essentials
Michael Sullivan
Textbook: College Algebra Edition 9
Find the value of each expression if x = 3 and y = -2.
50. |x| + |y|
Solution:
|3| + |-2|
3 + 2
Answer: 5
Yep, looks right to me.
53. 3|x| + 2|y|
Solution:
3|3| + 2|-2|
9 + 2(2)
9 + 4
Answer: 13
I say correct. You?
55. ||4x| - |5y||
Solution:
||4(3)| - |5(-2)||
||12| - |-10||
|12 - 10|
|2|
Answer: 2
Doing good so far, right?
Algebra Essentials
Michael Sullivan
Textbook: College Algebra Edition 9
Find the value of each expression if x = 3 and y = -2.
50. |x| + |y|
Solution:
|3| + |-2|
3 + 2
Answer: 5
Yep, looks right to me.
53. 3|x| + 2|y|
Solution:
3|3| + 2|-2|
9 + 2(2)
9 + 4
Answer: 13
I say correct. You?
55. ||4x| - |5y||
Solution:
||4(3)| - |5(-2)||
||12| - |-10||
|12 - 10|
|2|
Answer: 2
Doing good so far, right?