Find the equation in standard form of the parabola described.The focus has coordinates (2, 0), and the equation of the directrix is x = -2.
A. y2 = 8x
B. y2 = 2x
C. x2 = 8y
D. y2 = -8x
Answer: A
Mathematics
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Use the laws of exponents to simplify. Write the answer with positive exponents.(5a1/7 ? b5/7)3
A. 125a3/7b15/7 B. 125(ab)15/7 C. 15a3/7b5/7 D. 5a3/7b15/7
Mathematics
Solve the equation by the method of your choice. Simplify irrational solutions, if possible.(x + 4)(x + 1) = 28
A. {-4, -1} B. {1, 4} C. {-3, 8} D. {-8, 3}
Mathematics
Expand using the binomial theorem.(x + 4y)4
A. x4 + 16x3y + 96x2y2 + 16xy3 + 256y4 B. x4 + 16x3y + 128x2y2 + 256xy3 + 256y4 C. x4 + 16x3y + 96x2y2 + 256xy3 + 256y4 D. x4 + 4x3y + 96x2y2 + 128xy3 + 256y4
Mathematics
Fill in the blank with one of the words or phrases listed below.
To write a decimal or fraction as a percent, multiply by 
.
A. 
B. 100%
C. 0.01
D. percent
Mathematics