Use half-angle identities to find the exact value of the expression.sin 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the problem.A bike road race starts at an elevation of 700 feet and passes through 5 stages where the elevation changes by 
-292 ft, 525 ft, and 357 ft. At what elevation does the race end?
A. -2811 ft B. 2811 ft C. 1393 ft D. 1479 ft
Mathematics
Solve the problem.A number minus 20 times its reciprocal is 1. Find the number.
A. 5 B. -5 or 4 C. 5 or -4 D. 5 or 4
Mathematics
Replace the question mark by < or > to make a true statement.
? 
A. > B. <
Mathematics
Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.(x3 + 7xy - 5y2) - (9x3 + 5xy + y2)
A. -8x3 + 2xy - 6y2 B. 8x3 - 2xy - 4y2 C. 10x3 + 2xy - 6y2 D. -8x3 + 2xy - 4y2
Mathematics