Find the length of an arc intercepted by a central angle ? in a circle of radius r. Round your answer to 1 decimal place.r = 16.05 cm.; ? = 
? radians
A. 67.2 cm
B. 33.6 cm
C. 134.5 cm
D. 21.4 cm
Answer: A
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What number should be added to complete the square of the expression?x2 - 
x
A. 
B. - 
C. 
D. - 
Use the principle of estimation to find an estimate for the calculation.625,381 × 793
A. 420,000,000 B. 560,000,000 C. 480,000,000 D. 42,000,000
Solve the problem.A doctor has told a sick patient to take vitamin pills. The patient needs at least 37 units of vitamin A, at least 8 units of vitamin B, and at least 26 units of vitamin C. The red vitamin pills cost 
each and contain 7 units of A, 1 unit of B, and 2 units of C. The blue vitamin pills cost 
each and contain 3 units of A, 1 unit of B, and 7 units of C. How many pills should the patient take each day to minimize costs?
A. 6 red and 2 blue B. 7 red and 1 blue C. 8 red and 0 blue D. 2 red and 6 blue
Factor.1000s3 + 1
A. (10s - 1)(100s2 + 10s + 1) B. (1000s + 1)(s2 - 10s + 1) C. (10s + 1)(100s2 + 1) D. (10s + 1)(100s2 - 10s + 1)