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3 years ago

7 2/5 + 8 1/8 =write the answer in simplest form

Mathematics

2 answers:

Volgvan3 years ago

5 0

$\frac{621}{40}$

I hope that helped, Good luck! (:

Klio2033 [76]3 years ago

3 0

Hi there! First, let’s convert the fractions into LCD by finding the LCM of 5 and 8, which is 40. Concert the fractions into 7 16/40 and 8 5/40. When you add both numbers, you get 15 21/40 and that is in simplest form. The sum is 15 21/40.

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2 years ago

You volunteer to help drive children at a charity event to the zoo, but you can fit only 7 of the 18 children present in your va

yulyashka [42]

The answer is 19,448 different groups, using the formula from permutation and combinations C (n, r) = (n!) / (r! (n-r)!) which calculates the number of times where r objects can be chosen from n object.

So,

C (17,7) = (17!) / (7! *(17-7)!)

C (17,7) = (17!) / (7! *10!)

C (17,7) = (17*16*15*14*13*12*11*10!) / (7! *10!) then eliminate 10!

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4 years ago