Solve the equation.-7x + 7 + 5x = -2x + 12
A. all real numbers
B. {-7}
C. no solution
D. {5}
Answer: C
Mathematics
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Find the exact value of the trigonometric expression without the use of a calculator.If cos ? = - 
, 
< ? < ? and sin ? = - 
, ? < ? < 
, find the exact value of tan (? + ?).
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation. Write the result in the form a + bi.(9 + 8i) - (-3 + i)
A. 6 + 7i B. 12 + 7i C. 12 + 9i D. 6 + 9i
Mathematics
Add.688 + 31,732
A. 38,612 B. 32,420 C. 31,420 D. 33,850
Mathematics
Find the standard equation of the parabola that satisfies the given conditions. Vertex: (-4, 0); focus: (-5, 0)
A. (y + 4)2 = -4x B. x2 = -4(y + 4) C. y2 = -4(x + 4) D. (x + 4)2 = -4y
Mathematics