Free WACE Year 11 Mathematics Applications Flashcard Review
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Annual to weekly salary?
Divide by 52.
Fortnightly to average monthly?
Multiply by 26 and divide by 12.
Time-and-a-half rate?
1.5 times ordinary hourly rate.
Commission earnings?
Eligible sales × decimal commission rate, plus any stated base.
Unit price?
Price divided by quantity in standard units.
Percentage increase multiplier?
1 + percentage/100.
Remove 10% GST?
Divide inclusive price by 1.10.
Percentage profit on cost?
(Revenue − cost)/cost × 100.
Simple interest?
I = Prt with consistent time and rate units.
Compound balance?
A = P(1+r)ⁿ, using rate per compounding period.
P/E ratio?
Market price per share / annual earnings per share.
Why check spreadsheet formulas?
Incorrect references propagate when copied; manually verify a representative row.
What does substitution mean?
Replace every variable with its given numerical value.
Why bracket a negative substituted value?
Brackets preserve the sign when using powers and multiplication.
What is the subject of a formula?
The quantity isolated on one side of the equals sign.
What does $A2 fix?
Column A stays fixed; the row can change when copied.
What does B$1 fix?
Row 1 stays fixed; the column can change when copied.
How are matrix dimensions stated?
Rows × columns.
What is a row matrix?
A matrix with exactly one row.
What is an identity matrix?
A square matrix with diagonal ones and all other entries zero.