Find the inverse of the matrix, if possible.A = 
A. 
B. 
C. 
D. No inverse
Answer: D
Mathematics
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Write the number in scientific notation.2,070,000
A. 2.7 × 106 B. 2.07 × 104 C. 2.07 × 105 D. 2.07 × 106
Mathematics
Solve the problems.A quality-control inspector examined 210 calculators and found 15 of them to be defective. At this rate, how many defective calculators will there be in a batch of 14,490 calculators?
A. 69 B. 5 C. 1,035 D. 3,150
Mathematics
Find the sum and simplify the answer.
+ 
+ 
A. 
B. 
C. 
D. 
Mathematics
Sketch the vectors u and w with angle ? between them and sketch the resultant.
= 8, 
= 16, ? = 15°
A. 
B. 
Mathematics