Write the expression in the standard form a + bi.-6i(-4 + 7i)
A. 42 + 24i
B. -42 + 24i
C. 24i + 42i2
D. 24i - 42i2
Answer: A
Mathematics
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Use the graph of the quadratic function to determine the sign of the leading coefficient, the vertex, and the equation of the axis of symmetry.
A. Negative; (3, -2); x = 3 B. Positive; (3, -2); x = 3 C. Positive; (3, -2); y = -2 D. Positive; (-3, -2); x = -3
Mathematics
Write a true sentence using either < or >.-0.143 
8
A. -0.143 < 8 B. -0.143 > 8
Mathematics
Use the distributive property to write the expression without parentheses. Then simplify, if necessary.3(10x - 5)
A. 45x B. 13x - 8 C. 30x - 15 D. 30x - 5
Mathematics
Solve.x2 = 0.64
A. 0.8 B. ±0.8 C. ±9 D. 32
Mathematics