Determine the indefinite integral. Check your work by differentiation.
d?
A. cot ? + C
B. ? + tan ? + C
C. cos2 ? + C
D. -cot ? + C
Answer: D
Mathematics
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Solve the problem by guessing and adjusting.Mitra created a mosaic design using square 4-by-4 cm white tiles and rectangular 
centimeter black tiles. She used twice as many white tiles as black tiles. The finished pattern was 2704 square centimeters in area. How many rectangular tiles did she use?
A. 52 B. 20 C. 104 D. 212
Mathematics
Use unit ratios to convert the units.1
pints to cups
A. 4 c B. 2 c C. 3 c D. 6 c
Mathematics
Simplify. Unless otherwise specified, assume that variables can represent any number.
A. 
B. 3 - x
C. x - 3
D. 
- 3
Mathematics
Evaluate the expression.(97)
A. 1 B. 18 C. 36 D. 72
Mathematics