Solve the problem. Use 3.14 for ?.The striking circle in field hockey is a semicircle with a radius of 15.6 yd. Find the area of the semicircle.
A. 382.0752 yd2
B. 764.1504 yd2
C. 3056.6016 yd2
D. 97.968 yd2
Answer: A
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Multiply. Write the result in the form a + bi.
? 
A. -15 B. 15i2 C. -15i D. 15
Solve the formula for n.
?
?
A. 
B. 
C. 
D. 
E. 
Divide. Round your answer to the nearest hundredth when necessary.37.6 ÷ 47
A. 1.8 B. 0.8 C. 8 D. 18
Solve the system as matrix equations using inverses.A company produces three models of MP3 players, models A, B, and C. Each model A machine requires 
of electronics work, 2.8 hours of assembly time, and 4.4 hours of quality assurance time. Each model B machine requires 
of electronics work, 
of assembly time, and 
of quality assurance
time. Each model C machine requires 
of electronics work, 
of assembly time, and 
of quality assurance time. There are 
available each week for electronics, 
for assembly, and 
for quality assurance. How many of each model should be produced each week if all available time must be used?
A. Model A: 28
Model B: 22
Model C: 45
B. Model A: 31
Model B: 20
Model C: 44
C. Model A: 30
Model B: 15
Model C: 50
D. Model A: 30
Model B: 20
Model C: 45