Final answer:
The magnitude of vector -3B is 5 units.
Step-by-step explanation:
The magnitude of a vector is the length or size of the vector. To find the magnitude of the vector -3B, we can use the formula:
|−3B| = √((-3)² + (-4)²)
|−3B| = √(9 + 16)
|−3B| = √25
|−3B| = 5
The magnitude of vector -3B is 5 units.
Learn more about Magnitude of a vector