Rewrite the equation in a rotated x'y'-system without an x'y' term. Express the equation involving x' and y' in the standard form of a conic section.31x2 + 10
xy + 21y2 -144 = 0
A. 
+ 
= 1
B. y'2 = -4
x'
C. 
+ 
= 1
D. x'2 = -4
y'
Answer: C
Mathematics
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Solve the system using matrices. -2x - y - 7z = -33-3x + 3y - 6z = -18 8x - 2y + z = 27
A. (4, 3, 4) B. (4, 4, 3) C. No solution D. (-4, 4, 8)
Mathematics
Provide an appropriate response.Find the derivative of y = 
by using the Quotient Rule and by using the Power Rule for Negative Integers. Show that your answers are equivalent.
What will be an ideal response?
Mathematics
Add or subtract. Express the answer as a mixed number.13
- 7
A. 6
B. 5
C. 4
D. 5
Mathematics
Find all complex solutions.x4 - 49 = 0
A. 
B. ± 
, ± i
C. 
, i
D. ± 
Mathematics