9 is 3 less than a number n in standard form
1 answer:
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Amount paid for the first book is $17.
Amount paid for the second book is 0.75 x 8 = $6
Total amount paid = $17 + $6 = $23
Total full cost of the two books = $17 + $8 = $25
Amount of discount = $25 - $23 = $2
% reduction =
Therefore, the <span>percent of the total cost of the two books reduced during the sale</span> is 8%
Amount paid for the second book is 0.75 x 8 = $6
Total amount paid = $17 + $6 = $23
Total full cost of the two books = $17 + $8 = $25
Amount of discount = $25 - $23 = $2
% reduction =
Therefore, the <span>percent of the total cost of the two books reduced during the sale</span> is 8%
The question is an illustration of solving equations using estimates.
The student's strategy makes sense because he uses estimation to solve the given equation
The correct sequence of equation is as follows:
We have:
Add 0 to the equation
Express 0 as 1 - 1
Add another 0
Express 0 as 3 - 3
Rewrite as:
Solve
Read more about estimation and equations at: