Find the length of the missing side of the right triangle. Round to three decimal places, if necessary.a = 10, b = 24
A. c = 25
B. c = 18
C. c = 26
D. c = 22
Answer: C
Mathematics
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Find A?B, the union of sets A and B.
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Mathematics
Find the prime factorization of the number. ? 864 ?
A. 
B. 
C. 
D. 
E. 
Mathematics
Factor the expression completely. If the polynomial will not factor, write "prime."4x4 - 81
A. (2x2 + 9)(2x2 - 9) B. prime C. (2x2 + 9)2 D. (2x2 - 9)2
Mathematics
Solve the problem.John (whose line of sight is 6 ft above horizontal) is trying to estimate the height of a tall oak tree. He first measures the angle of elevation from where he is standing as 35°. He walks 30 feet closer to the tree and finds that the angle of elevation has increased by 12°. Estimate the height of the tree rounded to the nearest whole number.
A. 67 ft B. 86 ft C. 61 ft D. 90 ft
Mathematics