Add or subtract the rational numbers. Express the sum or difference as a rational number in lowest terms.- 
+ 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Draw a tree diagram for the experiment. Then use the diagram to find the number of possible outcomes.Spin the spinner once and roll a die. 
A. 9 B. 12 C. 36 D. 18
Mathematics
Provide an appropriate response.Are two equilateral triangles always similar? Explain why or why not.
What will be an ideal response?
Mathematics
Solve the problem.A sample of 300 g of lead-210 decays to polonium-210 according to the function given by 
where t is time in years. What is the amount of the sample after 60 years (to the nearest g)?
A. 230 g B. 32 g C. 2046 g D. 44 g
Mathematics
Graph the inverse function.y = sec-1 2x
A. 
B. 
C. 
D. 
Mathematics