Find the perimeter. Use 3.14 for ? when needed.
A. 167.316 km
B. 72.67 km
C. 136.815 km
D. 56.185 km
Answer: D
Mathematics
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Perform the indicated operation.
A. 400 B. 40 C. 0.0025 D. 25
Mathematics
Write an algebraic equation and use it to solve the problem.A promotional deal for long distance phone service charges a $15 basic fee plus $0.05 per minute for all calls. If Joe's phone bill was $52 under this promotional deal, how many minutes of phone calls did he make? Round to the nearest integer, if necessary.
A. 7 minutes B. 2 minutes C. 740 minutes D. 1340 minutes
Mathematics
Find the equation of the tangent line at the given value of x on the curve.2xy - y2 = 1, x = 1
A. y = x - 1 B. y = 1 C. x = 1 D. y = -x + 1
Mathematics
Simplify.8 × 0.2 + 1.1 ÷ 2 - 0.42
A. 5.09 B. 0.29 C. 9.19 D. 1.99
Mathematics