Check the addition. If the answer is incorrect, find the correct answer.
14,723
A. Incorrect; should be 14,623
B. Incorrect; should be 14,833
C. Incorrect; should be 13,723
D. Correct
Answer: D
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Solve the problem.Triangle A has sides measuring 5 feet, 12 feet and 13 feet; triangle B has sides measuring 5 feet, 12 feet and 
Which triangles, if any, are right triangles?
A. A B. B C. A and B D. neither triangle
Identify the polynomial as a monomial, binomial, or trinomial. Give the degree of the polynomial.10y9
A. Binomial, degree 10 B. Binomial, degree 9 C. Monomial, degree 10 D. Monomial, degree 9
Convert the measurement as indicated.34,085 ft = 
mi 
ft
A. 6 mi 2405 ft B. 6 mi 2305 ft C. 5 mi 2505 ft D. 7 mi 2405 ft
Solve the problem.A certain radioactive isotope has a half-life of approximately 1450 years. How many years would be required for a given amount of this isotope to decay to 80% of that amount?
A. 3367 yr B. 387 yr C. 467 yr D. 290 yr