relationship between a number of student complaints (x) and failure rate (y) was studied in 1500 female university students by using the least-squares criterion. The following equation of line was obtained from this study: -0.00127 + 0.0180x The above equation implies that: A. on average it takes 1.8 complaints to increase failure rate by 1% В. each student complaint increases failure rate by 1.27% С. each complaint increases failure rate by an average of amount of 1.8% D. each complaint increases failure rate by exactly 0.018
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.


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