Evaluate the expression when z = −1.9.
|z + 7.8|
Options:
A) 5.9
B) 7.8
C) 9.7
D) 3.9
Evaluate the expression when z = −1.9. |z + 7.8| What is the result?
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Evaluate the expression when z = −1.9.
|z + 7.8|
Options:
A) 5.9
B) 7.8
C) 9.7
D) 3.9
To evaluate the expression |z + 7.8| when z = -1.9, we start by substituting -1.9 for z:
1. Calculate z + 7.8:
[
-1.9 + 7.8 = 5.9
]
2. Take the absolute value:
[
|5.9| = 5.9
]
So the correct answer is A) 5.9. This is because the absolute value of a positive number is the number itself.