The oldest child in a family of four children is twice as old as the yougest. The two middle children are 12 and 15 years old. I
f the average age of the children is 12.75 , how old is the youngest child?
1 answer:
Answer:
8 years old
Step-by-step explanation:
oldest= 16
8+12+15+16= 51
51/4 = 12.73 ( average)
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Answer:
7
Step-by-step explanation:
Answer:
Present Day:
Bob:Rob:Difference
3 : 4 : 1
6 : 12 : 2
4 years ago:
Bob:Rob:Difference
5 : 7 : 2
80/400 as a decimal is 0.2
Y = 7.25x
Where x = hours.
You can get this by dividing the amount by the amount of hours in each pair.
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).
It's not linear because it doesn't take the form

and it's not possible to rewrite it as such.