Classify the angle as acute, obtuse, straight, or right. For right and straight angles indicate the number of degrees in the angle.
A. Straight (180°)
B. Right (90°)
C. Acute
D. Obtuse
Answer: B
Mathematics
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A parabolic mirror reflects light in a beam when the light source is placed at its focus. How far from the vertex of the parabolic reflector should the light source be placed? (All measurements are in feet.)
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?
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A. 4 feet B. 1 foot C. 16 feet D. 32 feet E. none of these
Mathematics
Write the percent as a decimal.100%
A. 100 B. 1 C. 0.01 D. 0.1
Mathematics
Solve the problem.In a chemistry class, 4 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 2.0 L B. 4.0 L C. 1.0 L D. 3.0 L
Mathematics
Solve.49,413.7 = 9099.958 + z
A. 40,213.342 B. 40,263.742 C. 40,370.752 D. 40,313.742
Mathematics