Use the quadratic formula to solve the equation.2x2 = -5x - 7
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Replace the Cartesian equation with an equivalent polar equation.x2 + 4y2 = 4
A. r2(cos2? + 4 sin2?) = 4 B. r2(4 cos2? + sin2?) = 4 C. 4 cos2? + sin2? = 4r D. cos2? + 4 sin2? = 4r
Mathematics
Write a fraction to represent the shaded part of the figure.
A. 
B. 
C. 
D. 
Mathematics
Solve.30% of the students in a school are male. If there are 660 students altogether, how many students are male?
A. 2200 students B. 5 students C. 462 students D. 198 students
Mathematics
Write the expression in the standard form a + bi.(6 + 9i) - (-8 + i)
A. -2 + 10i B. 14 - 8i C. -14 - 8i D. 14 + 8i
Mathematics