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statuscvo [17]
3 years ago
15

The ratio of boys to girls at the beach cleanup was 7:5. If there were 42 boys, how many girls were there.

Mathematics
1 answer:
nalin [4]3 years ago
7 0
30 girls because 42÷7=6 So multiply 6 by 5 and it gives you the ratio for girls
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Answer:

Option (B) is correct.

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Step-by-step explanation:

According to law of conservation of mass :

In a balanced chemical equation, the mass of reactants is always equal to the mass of products.

Here, Water 2H_{2}O is the reactant which has 4 units of Hydrogen and 2 units of oxygen.

and 2H_2+O_2 are products which also has 4 units 4 units of Hydrogen and 2 units of oxygen.

Thus, The mass of the reactants equals the mass of the products.

Thus, option (B) is correct.


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Answer:

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