Answer:
The magnitude of the given vector is 40.72 units.
Step-by-step explanation:
The given vector is 
We know that for any vector 'r'
the magnitude is given by

Comparing with the given vector we have
x = -3
y = 40
z = 7
Thus the magnitude equals


Answer:
the answer is 4.75
Step-by-step explanation:
5-0.25=4.75
Answer:
Hence the expression 
Step-by-step explanation:
Explanation
- The given expression is (a + b)(2a+3 b).
- We have to multiply the given expression.
- Multiply the (a + b) by 3b, multiply the (a + b) by 2a then add like terms.

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