Find the perimeter. Use 3.14 for ? when needed.
A. 90 cm
B. 50 cm
C. 410 cm
D. 70 cm
Answer: D
Mathematics
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Find the probability.A family has five children. The probability of having a girl is 1/2. What is the probability of having exactly 2 girls and 3 boys?
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Which of the following statements is true?
A. An isosceles right triangle is its own gnomon. B. A golden rectangle is its own gnomon. C. an equilateral triangle is its own gnomon. D. A 30°-60°-90° triangle is its own gnomon. E. none of these
Mathematics
Find the direction angle ? for the given vector. Let 0° ? ? < 360° and round ? to the nearest tenth when appropriate.
A. 225° B. 315° C. 270° D. 45°
Mathematics
Simplify the radical expression. Assume all variables represent nonnegative real numbers.
A. xy
B. xyz
C. x
D. xy
Mathematics