Determine whether the lines through each pair of points are perpendicular.(4, -9) and (-12, -7); (3, -8) and (2, -16)
A. perpendicular
B. not perpendicular
Answer: A
Mathematics
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A. 3 edges B. 6 edges C. 9 edges D. 18 edges
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Solve the problem.Write 270 out of 500 zoo animals as a decimal and as a percent.
A. 0.54, 540% B. 0.54, 54% C. 0.54, 5.4% D. 5.4, 540%
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Find the x- and y-intercepts for the equation. Then graph the equation.x + 4y = 4
A. 
, 
B. 
, 
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Solve the problem.The voltage E in an electrical circuit is given by E = 1.2 cos 80?t, where t is time measured in seconds. Find the amplitude.
A. 1.2 B. 80? C. 2.4 D. 80
Mathematics