Graph the ellipse.
+ 
= 1
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Simplify. Write your answer in the form a + bi, where a and b are real numbers.(12 + 9i) - (1 + 2i)
A. 11 + 7i B. 13 + 11i C. 13 - 7i D. -13 - 11i
Mathematics
Estimate the product by first rounding the factors as indicated.104 × 399 (nearest hundred)
A. 400,000 B. 40,000 C. 300,000 D. 30,000
Mathematics
Matrix A is given. Find appropriate identity matrices Im and In such that ImA = A and AIn = A.A = 
A. Im = In = 
B. Im = 
, In = 
C. Im = 
, In = 
D. Im = In = 
Mathematics
Simplify the algebraic expression.8x - 17 - 9x
A. -1x - 17 B. -1x + 17 C. -17x - 17 D. 1x - 17
Mathematics