Answer:
Here c represents the total number of children in choir.
As per the statement:
Total number of boys in choir = 12
It is also given that: Three sevenths of a children's choir are boys.
⇒ Total number of boys = 
or

By cross multiply we have;
84 = 3c
Divide both sides by 3 we have;
c = 28
Therefore, the total number of children in choir is 28 children
Answer:

Step-by-step explanation:
We can add the two equations to eliminate the variable
and solve for
:



Now, we can use substitution to solve for
:
(given)




Hope this helps :)
D+8=X
X-2=K
K+C
i hope that answers your question but you were not specific on telling me what to do.
Answer:
6) B distributive property 7) B distributive property 8) C associative property
Step-by-step explanation:
Answer:
1. 188.57 meters 2. 1254.20 metres
Step-by-step explanation: