Tell whether the angle is acute, right, obtuse, or straight.?ADB 
A. Obtuse
B. Straight
C. Right
D. Acute
Answer: B
Mathematics
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Find the vertex of the parabola.y = x2 - 4
A. (-4, 0) B. (0, -4) C. (4, 0) D. (0, 4)
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Use the graph of the function f, plotted with a solid line, to sketch the graph of the given function g.g(x) = f(x) + 1
A. 
B. 
C. 
D. 
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Find the angle between the two planes.
?
?
A. 77.7° B. 76.7° C. 79.7° D. 78.7° E. 75.7°
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Use the properties of logarithms to find the value of the expression.Let logb A = 3 and logb B = -2. Find logb AB.
A. -6 B. 1 C. 5 D. 6
Mathematics