Use the definition f'(x) = 
to find the derivative at x.f(x) = 3x4 - 9x3 + 4
A. 3x3 - 9x2 + 4
B. 12x3 - 27x2 + 4
C. 3x3 - 9x2
D. 12x3 - 27x2
Answer: D
Mathematics
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Perform the indicated operation. Write the result in the form a + bi.(-2.2 + 4.4i) - (-3.6 - 0.6i)
A. -5.8 + 3.8i B. 1.4 + 5i C. 2.2 + 4.2i D. 2.2 - 4.2i
Mathematics
Perform the operation and reduce to lowest terms.1
× 7
A. 7
B. 13
C. 12
D. 15
Mathematics
Graph the inequality.y > x2 + 4
A. 
B. 
C. 
D. 
Mathematics
Identify the triangle as acute, obtuse, or right. Also, identify the triangle as isosceles, equilateral, or scalene. Sides equal in length are marked.
A. right, isosceles B. acute, scalene C. acute, equilateral D. right, equilateral
Mathematics