Insurance companies often try to calculate average life expectancy, that is, how long different populations can reasonably be expected to live. The companies do this for men and women and for people across all ethnicities. The equation L = 0.25y + 57 is a way of calculating a reasonable life expectancy for African American females. This equation is based on y, the number of years after 1900 that the women were born. What is the birth year for females who have a life expectancy of 72 years? 1994 1960 1954 1987 1972
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.
Insurance companies often try to calculate average life expectancy, that is, how long different populations can reasonably be expected to live. The companies do this for men and women and for people across all ethnicities. The equation L = 0.25y + 57 is a way of calculating a reasonable life expectancy for African American females. This equation is based on y, the number of years after 1900 that the women were born. What is the birth year for females who have a life expectancy of 72 years?
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1994 |
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1960 |
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1954 |
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1987 |
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1972 |
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