Find the perimeter. Use ? ? 3.14. Round the answer to the nearest te nth.
A. 54.8 m
B. 61.7 m
C. 73.7 m
D. 30.8 m
Answer: A
Mathematics
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Solve the problem.Find the half-life of the radioactive element radium, assuming that its decay constant is 
with time measured in years.
A. 1600 years B. 2308 years C. 800 years D. 1400 years
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Solve the problem.The result of applying the same glide reflection twice is equivalent to a single
A. rotation. B. glide reflection. C. translation. D. reflection. E. none of these
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Provide an appropriate response.
Solve the system of equations graphically:y = 
x + 1
y = x - 1
A. 
B. 
C. 
D. 
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Find the value of the variable that satisfies the equation.-3x = -13x - 90
A. x = 30
B. x = -9
C. x = - 
D. x = 
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