Write the expression in the standard form a + bi.(9 + 6i) - (-3 + i)
A. 12 - 5i
B. -12 - 5i
C. 12 + 5i
D. 6 + 7i
Answer: C
Mathematics
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Provide an appropriate response. Find the x- and y-intercepts for the quadratic equation y = x2 + 6x + 8.
A. x-intercepts -2 and -4; y-intercept -8 B. x-intercepts -2 and -4; y-intercept 8 C. x-intercept 6; y-intercept 8 D. x-intercepts 2 and 4; y-intercept 8
Mathematics
Find the exact value of the expression.sin 220° cos 100° - cos 220° sin 100°
A. 
B. - 
C. - 
D. - 
Mathematics
Solve the problem.How many different three-digit numbers can be written using digits from the set {5, 6, 7, 8, 9} without any repeating digits?
A. 10 B. 60 C. 120 D. 20
Mathematics
Determine the slope and the y-intercept of the graph of the equation.11x + y + 2 = 0
A. m = 11; (0, -2)
B. m = - 
; 
C. m = - 
; 
D. m = -11; (0, -2)
Mathematics