Answer the question asked. When necessary, round to the nearest hundredth.One conveyor belt can move 1000 boxes in 10 minutes. Another can move 1000 boxes in 11 minutes. If another conveyor belt is added and all three are used, the boxes are moved in 3 minutes. How long would it take the third conveyor belt alone to do the same job?
A. 
min
B. 7
min
C. 1
min
D. 
min
Answer: B
Mathematics
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Estimate the following mentally.90 + 53 - 253 + 410
A. 700 B. 625 C. 300 D. 350
Mathematics
Round to the indicated place value.Round to the nearest thousandth: 0.3899
A. 0.400 B. 0.399 C. 0.390 D. 0.380
Mathematics
Simplify the exponential expression. Write any negative exponents as positive exponents. Assume all variables represent positive real numbers.(9x18y-2)9/2
A. 
B. 
C. 
D. 19,683x81y9
Mathematics
Solve the problem.In how many ways can a committee of seven people be chosen from 15 married couples if: (a) two particular couples must be on the committee?(b) no married couples may be on the committee?
What will be an ideal response?
Mathematics