Find the sum and simplify the answer. 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Identify the type of surface represented by the given equation.
+ 
= 
A.
| Ellipsoid |
B. Elliptical cone
C. Elliptical paraboloid
D. Hyperbolic paraboloid
Mathematics
Determine the appropriate rotation formulas to use so that the new equation contains no xy-term.3x2 + 2xy + 3y2 - 8x + 8y = 0
A. x = 
x' - 
y' and y = 
x' + 
y'
B. x = 
x' - 
y' and y = 
x' + 
y'
C. x = 
(x' - y') and y = 
(x' + y')
D. x = -y' and y = x'
Mathematics
Find the x-intercepts.y = -3x2 - 8x + 2
A. 
and 
B. No x-intercepts
C. 
and 
D. 
and 
Mathematics
Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. - 
Mathematics