Rationalize the denominator. Assume that all radicands represent positive real numbers.
A. 
(
+ 1)
B. 
(
+ 1)
C. 
(
+ 1)
D. 
(
- 1)
Answer: B
Mathematics
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Evaluate the spherical coordinate integral.
A. 
?
B. 
?2
C. 
?2
D. 
?
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The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using backward substitution.
Write the solution as an ordered pair, if possible.
A. (2, 15) B. No solution C. (15, 2) D. (14, - 2)
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Use sum-to-product formulas to rewrite the expression as a product.cos 19° - cos 49°
A. -2 cos 34° cos 15° B. 2 sin 34° cos 15° C. -2 sin 34° sin 15° D. 2 sin 34° sin 15°
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Graph the inequality.x > 1
A. 
B. 
C. 
D. 
Mathematics