Classify the angle as acute, right, obtuse, or straight.
A. Obtuse
B. Right
C. Acute
D. Straight
Answer: C
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Solve the problem.The elasticity ? of a particular thermoplastic can be modeled approximately by the relation 
, where T is the Kelvin temperature. If the thermometer used to measure T is accurate to 1%, and if the measured temperature is 473 K, how should the elasticity be reported?
A. ? = ± 0.004 B. ? = 0.176 ± 0.002 C. ? = 0.176 ± 0.004 D. ? = 0.176
Find the area or volume.Find the volume of the solid generated by revolving the region under the curve 
in the first quadrant about the y-axis.
A. 4?3 B. 4? C. 16? D. 2?
Solve the problem.An engine cylinder 15.6 cm deep is being bored such that the radius increases by 
How fast is the volume V of the cylinder changing when the diameter is 
A. 72 cm3/min B. 7.2 cm3/min C. 480 cm3/min D. 17.7 cm3/min
Factor the trinomial containing two variables.x2 + 5xy - 14y2
A. (x + 7y)(x - 2y) B. (x - y)(x + 2y) C. (x - 7y)(x + 2y) D. (x - 7y)(x + y)