Find the circumference of the circle.
Approximate the circumference. Use ? ? 3.14.
A. 7.620 ft
B. 37.68 ft
C. 113.040 ft
D. 18.840 ft
Answer: B
Mathematics
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Perform the matrix operation.Let A = 
. Find 4A.
A. 
B. 
C. 
D. 
Mathematics
Use an Euler diagram to determine whether the argument is valid or invalid.All birds have feathers.
Therefore, no mammals are birds.
A. valid B. invalid
Mathematics
Use the quadratic formula to solve the equation.x2 + 16x + 53 = 0
A. {8 - 
, 8 + 
}
B. {8 + 
}
C. {-8 - 
, -8 + 
}
D. {-16 + 
}
Mathematics
Factor.t2 + 1.4t + 0.49
A. t(t + 1.4) B. (t + 1.4)2 C. (t2 + 0.7)2 D. (t + 0.7)2
Mathematics