1. Determine the ISBN check digit for the book Davao History by Corcino, Ernesto (1998). The first 12 digits of the ISBN are 978971920070_.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
1. Determine the ISBN check digit for the book Davao History by Corcino, Ernesto (1998). The first 12
digits of the ISBN are 978971920070_.
2. A purchase order for the book The Mathematics for the Modern World by Dale Hathaway with the
ISBN 9780201611298. Verify if the ISBN is valid.
6. The first 11 digits of the UPC of the Coca Cola Zero are 04900004256_. Find its check digit.
7. The UPC of the Procter & Gamble 27782 Tide 20 Ounce Tide Reg Powder is 037000277828. Verify
if it is a valid UPC.
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