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. 2.5 hr
D. 1.2 hr
Answer: D
Mathematics
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Solve the problem. Round to the nearest hundredth.What is 170% of 313?
A. 53.21 B. 5321.00 C. 53,210.00 D. 532.10
Mathematics
Determine the amplitude, range, and period of the function and sketch its graph.y = sin (x + ?)
A. amplitude: 1; range: [2, 4]; period: 2?
B. amplitude: 1; range: [-1, 1]; period: 2
C. amplitude: 1; range: [-1, 1]; period: 2?
D. amplitude: 1; range: [-1, 1]; period: 2?
Mathematics
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. - 
D. 
Mathematics
If a family has 4 children, in how many ways could the parents have 2 boys and 2 girls as children? ? __________ ways ?
Fill in the blank(s) with the appropriate word(s).
Mathematics