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Nonamiya [84]
3 years ago
14

gretchen and henrik are meeting at a park. gretchen lives 2.4 miles away from the park and bikes at a constant rate of 12 miles

per hour. henrik lives 8.4 miles away from the park and he drives at a constant rate of 36 miles. per hour. if they both head out at the same time , who will arrive first and by how many minutes?
Mathematics
2 answers:
shepuryov [24]3 years ago
6 0
1)t=S/U=2.4/12=0.2
2)t=S/U=8.4/36=0,23
3)0.23-0.2=0.03




lina2011 [118]3 years ago
6 0

60 minutes per hour / 12 miles per hour = 5 minutes per mile

2.4 miles * 5  = 12 minutes for Gretchen


60 / 36 = 1.67 minutes per mile

8.4 * 1.67 = 14 minutes for Henrik

 Gretchen arrives first by 2 minutes

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A mathematical expression is an expression which uses mathematical symbols and mathematical operations to represent an idea.

Two mathematical expressions are equivalent if they have the same value

The expression that is equivalent to negative two raised to the fourth power divided by negative two raised to the second power can be written as (-2)⁴/(-2)² = 2²

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1) No. 28/21 does not end up being equal to 2.
2) No. 45/5 does not equal 18/2
3) No. For something to be proportional, it should at least have the smaller number in the same place.
4) No. 25/12 does not equal 53/40
5) Yes. 4/2 is equal to 14/7
6) Yes. 4/1 is equla to 12/3
7) No. For something to be proportional, it should at least have the smaller number in the same place.
8) No. 44/9 is not equal to 36/11
9) Yes. 10/5 is equal to 16/8
10) Yes. 24/12 is equal to 14/7
11) No. 24/4 is not equal to 42/9
12) Yes. Both equal 1.
13) Yes. 20/5 is equal to 44/11
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15) Yes . 40/4 is equal to 10/1
16) Yes. 36/4 is equal to 45/5
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21) Yes. 36/24 is equal to 3/2.
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24) No. 34/7 is not 4
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27) Yes. This is proportional.
28) Yes. This is proportional.
29) No. This is not proportional.
30) No. This is not proportional
31) Yes. This is proportional.
32) Yes. This is proportional
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