Express the vector as a product of its length and direction.2j + 
k
A. 
B. 
C. 
D. 
(j + k)
Answer: C
Mathematics
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Provide an appropriate response.Find the greatest common factor of 42, 84, and 210.
A. 14 B. 21 C. 7 D. 42
Mathematics
Write the complex number in rectangular form.3
A. 
+ 
i
B. 
+ 
i
C. 
+ 
i
D. 
+ 
i
Mathematics
Solve the problem.In a certain memory experiment, subject A is able to memorize words at a rate given by 
In the same memory experiment, subject B is able to memorize at the rate given by 
How many more words does subject B memorize from t = 0 to t = 19 (during the first 19 minutes)?
A. 65 B. -7 C. 52 D. -21
Mathematics
Multiply.
A. 2470 B. 2560 C. 2460 D. 2360
Mathematics