Find the indicated quantity.a3, when a46 = - 49, a49 = - 52
A. - 1
B. - 7
C. 8
D. - 6
Answer: D
Mathematics
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Find the equation for the level surface of the function through the given point.f(x, y, z) = 
+ 
, (5, e6, e-4)
A. -5e-4 - 5e6 + 4e5 + 1 = 
+ 
B. -4e-4 - 6e6 + 4e5 + 1 = ln ? + 1 + t et
C. -4e-4 - 6e6 + 4e5 - 9 = 
+ 
D. -4e-4 - 6e6 + 4e5 + 1 = 
+ 
Mathematics
The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).2xy = 5
A. 2r cos ? sin ? = 5 B. r2 sin 2? = 5 C. r2 cos ? sin ? = 10 D. r2 sin 2? = 10
Mathematics
Use the cofunction identities to find an angle ? that makes the statement true.sin (? + 4°) = cos (? + 6°)
A. ? = 
B. ? = 10°
C. ? = 40°
D. ? = 
Mathematics
Decide whether the slope is positive, negative, zero, or undefined.
A. Undefined B. Negative C. Positive D. Zero
Mathematics