A pitching machine throws 70% strikes and 30% balls. Five pitches will be thrown by the machine.What is the probability the machine will throw one ball and four strikes?
A. 
B. 5 × 0.3 × 0.74
C. 0.3 + 4 × 0.7
D. 0.3 × 0.74
E. none of these
Answer: B
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Solve the problem.The volume V of a given mass of gas varies directly as the temperature T and inversely as the pressure P. A measuring device is calibrated to give 
when 
and 
What is the volume on this device when the temperature is 
and the pressure is 
style="vertical-align: -4.0px;" /> A. V = 244.4 in3 B. V = 18.8 in3 C. V = 224.4 in3 D. V = 264.4 in3
Find the part.0.4% of 2000 trees
A. 80 trees B. 800 trees C. 0.8 trees D. 8 trees
Solve triangle ABC. If necessary, round the answer to the nearest tenth.B = 35.0°, C = 108.9°, b = 28.5 centimeters
A. A = 36.1°, a = 29.3 cm, c = 47.0 cm B. A = 34.1°, a = 47.0 cm, c = 29.3 cm C. A = 34.1°, a = 49.00 cm, c = 31.30 cm D. A = 36.1°, a = 31.30 cm, c = 49.00 cm
Find the second-order partial derivative.Find fxx when f(x, y) = x4y5 - 
x7y7 + 17x - y.
A. 12x2y5 - 42
x5y7
B. 12x3y5 - 42
x6y7
C. 12x2y4 - 42
x5y6
D. 3x2y5 - 6
x5y7