Multiply.(-3 + 4x)(-7 + 4x)
A. 16x2 - 40x + 21
B. 4x2 - 40x - 40
C. 16x2 - 41x + 21
D. 16x2 + 21x - 40
Answer: A
Mathematics
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Apply Green's Theorem to evaluate the integral.
(7y + x) dx + (y + 4x) dyC: The circle (x - 5)2 + (y - 4)2 = 25
A. -270 B. -30 C. 75? D. -75?
Mathematics
Reduce the fraction.
A. 
B. 
C. 
D. 
Mathematics
Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.b = 20, c = 25
A. a = 5 B. a = 225 C. a = 45 D. a = 15
Mathematics
Determine the real solutions to the system of nonlinear equations.y2 + 2x2 = 28y2 - x2 = 1
A. (4, 
), (4, -
)
B. (3, 
), (3, -
), (-3, 
), (-3, -
)
C. (3, 
), (3, -
)
D. (4, 
), (4, -
), (-4, 
), (-4, -
)
Mathematics