Find the circumference of the circle. Use 3.14 or 
for ? as indicated.Find the circumference. 
A. 
ft
B. 
ft
C. 
ft
D. 
ft
Answer: C
Mathematics
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A certain tree grows by 2/t + e(-t2/2) feet per year, where t is the time in years. Use the trapezoidal rule with whole year intervals to estimate the total growth during the stated time interval.From t = 1 to t = 6
A. 4.516 ft B. 5.012 ft C. 5.286 ft D. 4.183 ft
Mathematics
Find the missing angle or angles.
A. 41°, 82° B. 82°, 82° C. 41°, 123° D. 55°, 109°
Mathematics
Find the unknown value.50 is what percent of 40?
A. 125% B. 130% C. 80% D. 1.25%
Mathematics
Plot the point in a polar coordinate system.(4, 30°)
A. 
B. 
C. 
D. 
Mathematics