Karina has 20 foot piece of ribbon. How many cus does she need to make cut 10 pieces of ribbon from it?
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To determine the number of cuts Karina needs to make 10 pieces of ribbon from a 20-foot piece of ribbon, we need to consider the following:
Each cut divides the length of the ribbon into two pieces. So, each cut creates one piece of ribbon.
Since Karina needs 10 pieces of ribbon, she needs to make 9 cuts.
To clarify, the first cut will divide the 20-foot ribbon into two pieces, the second cut will divide one of the previous pieces into two smaller pieces, and so on, until there are 10 pieces in total.
Therefore, Karina needs to make 9 cuts to obtain 10 pieces of ribbon.