Solve the problem.Sue can sew a precut dress in 3 hours. Helen can sew the same dress in 2 hours. If they work together, how long will it take them to complete sewing that dress? Give your answer rounded to one decimal place, if necessary.
A. 1.8 hr
B. 5 hr
C. 1.2 hr
D. 2.5 hr
Answer: C
Mathematics
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Write the word phrase as an algebraic expression. Twice the sum of a number x and twelve
A. 2x - 12 B. 2(x + 12) C. 2(x - 12) D. 2x + 12
Mathematics
Perform the division.(35m9n - 30m8n5 + 20m7n7) ÷ (5m6n)
A. 7m15 - 6m14n6 + 4m13n8 B. 29 C. 7m3 - 6m2n4 + 4mn6 D. 7m3 - 30m8n5 + 20m7n7
Mathematics
Determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the common difference; if it is geometric, find the common ratio.{4n - 2}
A. Arithmetic; d = -2 B. Arithmetic; d = 4 C. Geometric; r = 4 D. Neither
Mathematics
Add and, if possible, simplify.8 + 
A. 
B. 
C. 
D. 
Mathematics