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goldenroses
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goldenroses
Score
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6
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7 Questions
0 Answers
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37
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+10
In how many ways can 4 distinct balls be distributed into 3 identical boxes if no box is empty?
In how many ways can 4 distinct balls be distributed into 3 identical boxes if no box is empty?
goldenroses
Sep 27, 2021
-1
64
1
+10
Find the number of ways of writing the positive integer 9 as the sum of exactly 5 positive numbers.
Find the number of ways of writing the positive integer 9 as the sum of exactly 5 positive integers, where the order of addends does not matter. 5 + 1 + 1 + 1 + 1 and 1 + 5 + 1 + 1 + 1 are considered one way.
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goldenroses
Sep 17, 2021
-1
92
1
+10
Distance, Rate and Time problem
A plane traveled 812 miles to Austin and back. The trip there was with the wind. It took 7 hours. The trip back was into the wind. The trip back took 14 hours. FInd the speed of the plane in still air and the speed of the wind.
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goldenroses
Jul 30, 2021
-1
79
1
+10
Distance, Rate and time problem
A jet left the airport flying north five hours before a passenger plane. The passenger plane flew in the opposite direction going 260 km/h faster than the jet for htree hoiurs after which time the planes were 2650 km apart. What was the jet's speed?
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goldenroses
Jul 30, 2021
-1
85
1
+10
Ashley left the hospital and traveled toward her friend's house. Emily left one hour later traveling at 60 mph in an effort to catch up to A
Ashley left the hospital and traveled toward her friend's house. Emily left one hour later traveling at 60 mph in an effort to catch up to Ashley. After traveling for four hours Emily finally caught up. Find Ashley's average speed.
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goldenroses
Jul 30, 2021