Wife is under 18 Wife is over 25 at time of marriage. at time of marriage. d = 4n + 5 d = 2.3n + 1.5. %3D Probability of Divorce, by Wife's Age at Marriage 70% 60% Wife is under 50% age 18. 40% 30% 20% Wife is over 10% age 25. 10 15 Years after Marrying Percentage of Marriages Ending in Divorce
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.
The line graphs in Figure show the percentages of marriages ending in divorce based on the wife’s age at marriage.Here are two mathematical models that approximate the data displayed by the line graphs:
In each model, the variable n is the number of years after marriage and the variable d is the percentage of marriages ending in divorce.
a. Use the appropriate formula to determine the percentage of marriages
ending in divorce after 10 years when the wife is over 25 at the time of
marriage.
b. Use the appropriate line graph in Figure to determine the percentage
of marriages ending in divorce after 10 years when the wife is over 25 at the time of marriage.
c. Does the value given by the mathematical model underestimate or overestimate the actual percentage of marriages ending in divorce after
10 years as shown by the graph? By how much?
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