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emmasim [6.3K]
4 years ago
8

The arnold family arrived ar the beach at 10:30 A.M. Thay spent 3 3/4hours there. What time dud they leave the beach?

Mathematics
2 answers:
VMariaS [17]4 years ago
5 0
The arnold family arrived at the beach at 10:30 A.M.

10:30 

Add 3 hours and 3/4 minutes to that

3/4 = 75% of 60

.75 * 60 = 45

3 hours and 45 minutes 

10:30 >> 3 hours more = 1:30
1:30 + 45 mins = 2:15

Answer would be: They left at 2:15


natta225 [31]4 years ago
4 0
In order to answer this you first will add 3 hours to 10:30, this is 1:30. Then you need to know what 3/4 of an hour is. An hour is 60 minutes so you just break it into 4 parts, that is 15 minutes per part. so 15 times 2 equal 45 minutes. You add that to 1:30 and get 2:15. That means the arnold family left the beach at 2:15 pm.
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Answer:

GIVEN :

Patti is using mental math to evaluate the expression (70 + 12.8 + 30) + 6.1

TO FIND :

The properties of operations allow Patti to simplify.

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Given that Patti is using mental math to evaluate the expression (70 + 12.8 + 30) + 6.1.

Option d) She can use the commutative property to rewrite the expression as (70 + 30 + 12.8) + 6.1 is correct.

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<u><em></em></u>\frac{cosec\alpha(1-cosx^{2} \alpha ) }{sin\alpha cos\alpha  } = sec\alpha<u><em></em></u>

           

     

 

               

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