Four ninths plus one ninth
2 answers:
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The value of y is 3 when x is 6.
Solution:
The given table is the amount of cheese in ounces and the cost price.
Let x represents the amount of cheese and y represents the cost price.
The formula which derived from the table is y = x ÷ 2.
That is .
<u>To find the value of y when x is 6:</u>
Substitute x = 6 in the formula, we get
y = 3
Hence the value of y is 3 when x is 6.
We want to compute
The goal is to write it in the following form:
First step: How many "copies" of does
contain? We can write
, so the answer is
copies.
If we distribute to
, we get
If we were done, then this product would have matched the numerator at the start. But it doesn't; there are still some terms that need to vanish. In particular, we still have to account for
Second step: How many copies of can we find in
? Well,
, so the answer is
. Then
but this still doesn't match the original numerator. We still have to deal with
Third step: How many copies of can we get out of
?
. Then
This also doesn't match the original numerator. We have a difference between what we have and what we want of
But we also can't divide into chunks of
, and we can't continue the division algorithm.
Our final answer would be
For the second problem, you should find