Find the circumference or area of the circle, as requested. Give an exact answer (in terms of ?) and an approximation using 3.14 for ?. If necessary, round to two decimal places.Find the circumference
A. ? m; 24.12 m
B. 1.6? m; 5.02 m
C. 3.2? m; 10.05 m
D. 6.4? m; 20.1 m
Answer: D
Mathematics
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Solve the problem.Two tracking stations are on the equator 148 miles apart. A weather balloon is located on a bearing of 
from the western station and on a bearing of 
from the eastern station. How far is the balloon from the western station? Round to the nearest mile.
A. 436 mi B. 445 mi C. 505 mi D. 514 mi
Mathematics
Translate to an equation and solve.What is 84% of 104?
A. n = 0.84 × 104; 87.36 B. n = 84 × 104; 8736 C. 104 = 0.84 × n; 873.6 D. n = 0.084 × 104; 8.74
Mathematics
Solve the proportion and check.
= 
A. 
B. 4
C. 8
D. 1
Mathematics
Evaluate the expression.8-1 + 7-1
A. 1
B. 
C. 
D. 2
Mathematics