Find the directrices of the hyperbola.49x2 - 576y2 = 28,224
A. x = ± 
B. y = ± 
C. y = ± 
D. x = ± 
Answer: D
Mathematics
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Solve by factoring and using the principle of zero products.49k2 = 9
A. 
, - 
B. 
, - 
C. 3, 0
D. 
, 0
Mathematics
Find the root. Round to three decimal places if necessary.
A. 7.8 B. 1.950 C. 15.469 D. 60.84
Mathematics
Convert. Round to the nearest tenth unless otherwise indicated.A summer day on the North Slope of Alaska can have a temperature as low as -11°C. What is t his temperature in degrees Fahrenheit?
A. 12.2°F B. -6.1°F C. 23.9°F D. -19.8°F
Mathematics
Solve using the absolute value property.| 5x - 8 | = 7
A. 
B. 
C. 
D. 
Mathematics