Solve the problem.The temperature at the South pole was 37° at 8 am. At 3 pm, it was -26°. By how many degrees did the temperature drop?
A. 11°
B. -11°
C. 63°
D. -63°
Answer: C
Mathematics
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Multiply.(-x)(x - 7y)(x - 9y)
A. -x2 + 16xy - 63y2 B. -x3 - 16xy + 63y2 C. -x3 + 16x2y - 63xy2 D. -x3 - 16x2y + 63xy2
Mathematics
Find the numerical value of the expression for 
and 
A. a) 
b) 
B. a) 
b) 
C. a) 
b) 
D. a) 
b) 
Mathematics
Solve the system of equations. Let z be the parameter. 7x + 3y + 5z = -14 3x + y + 2z = -1
A. 
B. (-11 + z, 35 + z, z)
C. 
D. 
Mathematics
?Determine the convergence or divergence of the p-series 
.
?
A. ?The series converges. B. The series diverges.
Mathematics