1. controle if no numbers are missing and the numbers are in the right order
2. the formula is x-a so a=1
3. write everything out in the scheme
4. let the first number drop down
5. multiply the answers by a
6. add the number that are under each other
7. repeat 5 and 6 until to you're done
8. write down the equation
9. last number in the scheme is your residue, which means that you write it at the end, outside of the ()
Answer:
30 in^2
Step-by-step explanation:
When you reduce the total size by 0.5, the total area is divided by 4.
12 inches x 12 inches equals square foot
equals 144 square inches
3/10 and 4/10 and 4/12 and 9/12
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