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Let x = (58.72 x 406)/(0.845).
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2 partsStep-by-step solution
12 stepsStep 1: Let .
Step 2: Take the logarithm (base 10) of both sides.
Step 3: Apply logarithm properties and .
Step 4: Find the logarithm values.
Step 5: Substitute the values and calculate .
Step 6: Find the antilogarithm of .
Rounding to a reasonable number of significant figures (e.g., 4 or 5).
The evaluated value is .
Part a· 5 steps
Form quadratic equation to represent this situation.
Let the width of the rectangular plot be metres.
The length of the plot is 3 metres more than its width, so the length metres.
The area of a rectangle is given by length width.
The total area is 180 m.
Expand the equation.
Rearrange the equation into the standard quadratic form .
The quadratic equation is .
Part b
Solve the equation by factorisation method to find the dimensions of the plot.
The quadratic equation is .
Find two numbers that multiply to -180 and add to 3.
These numbers are 15 and -12.
Rewrite the middle term using these numbers.
Factor by grouping.
Set each factor to zero and solve for .
Since width cannot be negative, we take the positive value for .
Calculate the length using .
The dimensions of the plot are:
Width =
Length =
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