Answer:
8
Step-by-step explanation:
average is calculated as
average = 
= 13 ( multiply both sides by 2 )
sum of 2 eldest = 26
Then for the 4 children
average =
=
= 8
Answer: 36
Step-by-step explanation:
1) substitute x for 6
get f(-5)=6(1--5)= 6+30=46
You can't use distributive property by a calculator
I think it’s 5. I’m not sure
20t +15t+90+25t-75=60t+15
60t+15/3=20t+5 as the average
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