Solve the equation.
+ 
= -1
A. 
B. {5}
C. {0}
D. ?
Answer: D
Mathematics
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Multiply and simplify. Assume that all variables represent nonnegative numbers.
(
+ 
)
A. 
+ 
B. 15
C. 
D. 5 + 
Mathematics
Solve.If the three lengths of the sides of a triangle are known, Heron's formula can be used to find its area. If a, b, and c are the three lengths of the sides, Heron's formula for area is: A = 
where s is half the perimeter of the triangle, or s = 
(a + b + c).Use this formula to find the area of the triangle if a = 9 cm, b = 11 cm and c = 16 cm. 
A. 3
sq. cm
B. 18
sq. cm
C. 180
sq. cm
D. 18
sq. cm
Mathematics
Perform the indicated operations.
? 
+ 
? 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the surface integral where S is the surface with parametric equations x = 7uv, y = 6(u + v), z = 6(u - v), u² + v² = 3.
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Mathematics