Concept explainers
a.
Tofind:the number of feet the submarine descends per minute.
a.
Answer to Problem 42IP
The submarine descends at a speed of 24 feet/minute.
Explanation of Solution
Given information:
Consider the information provided, Joseph was tracking a submarine which was descending at a speed of 480 feet in 20 minutes.
Calculation:
To find the number of feet the submarine descends per minute. The total submarine descends is to be divided by the total time taken to descend.
As, Distance = Speed
Or, Speed
Therefore,
So, The submarine descends at a speed of 24 feet/minute.
b.
To write: an expression to determine the change, in feet, of the submarine’s elevation after any number of minutes.
b.
Answer to Problem 42IP
The expression to determine the change in elevation of submarine is
Explanation of Solution
Given information:
Consider the information provided, Joseph was tracking a submarine which was descending at a speed of 480 feet in 20 minutes.
Calculation:
The expression to determine the change in elevation of submarine is
Where,
c.
To draw: a table using the expression written in part b, showing the change in submarine’s depth after 5, 10, 15 and 18 minutes.
c.
Answer to Problem 42IP
The table showing the change in submarine descend is,
Minutes | Change in the submarine’s depth |
5 | |
10 | |
15 | |
18 |
Explanation of Solution
Given information:
Consider the information provided, Joseph was tracking a submarine which was descending at a speed of 480 feet in 20 minutes.
Calculation:
The table showing the change in submarinesdepth during different minutes using the expression
Minutes | Change in the submarine’s depth |
5 | |
10 | |
15 | |
18 |
Chapter 2 Solutions
Glencoe Math Accelerated, Student Edition
Additional Math Textbook Solutions
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