Find the solutions to the system of equations by the addition method.
- 
= 
+ 
= 
A. (
, 
)
B. (
, 
)
C. (
, 
)
D. (
, 
)
Answer: C
Mathematics
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Express the number in scientific notation.0.000315
A. 3.15 × 10-3 B. 3.15 × 104 C. 3.15 × 10-4 D. 3.15 × 10-5
Mathematics
Find the angle between the pair of vectors to the nearest tenth of a degree.
, 
A. 13.8° B. 47.6° C. 57.6° D. 23.8°
Mathematics
Find the Jacobian 
or 
(as appropriate) using the given equations.
A. 60
B. 
C. 20
D. 
Mathematics
Perform the indicated operation and write the answer in the form 
where a and b are real numbers.(3 + 4i) - (-6 + i)
A. -3 + 5i B. 9 + 3i C. -9 - 3i D. 9 - 3i
Mathematics