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G S Rehill's Interactive Maths Software Series - "Building a Strong Foundation in Mathematics" from mathsteacher.com.au.

Order a 12-month Year 7 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 8 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 9 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 10 Interactive Maths software Homework Licence for only $19.95.

Year 9 Interactive Maths - Second Edition


Problem Solving

Example 45

The formula for the temperature in a certain mine shaft is

where T stands for the temperature in degrees Celsius and D stands for the depth, in metres, below the surface.

a.  Make D the subject of the formula.
b.  Find the value of D when T = 25.
Solution:

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