Answer:
see attached
Step-by-step explanation:
When there is a lot of repetitive calculation, I like to let a spreadsheet do it.
Of course, the quantities are ...
You can enter the fractions directly in the spreadsheet (=12/16, for example), and it will do the calculation. The recipe cost is the product of recipe quantity and unit cost.
The total recipe cost and per-portion calculations should be obvious: the total is the sum of ingredient costs; the per-portion cost is that total divided by 50 portions. The spreadsheet has been set to round to 2 decimal places (cents).
<em><u>Solution:</u></em>
We have to find the distance between two landmarks
<em><u>Use the law of cosines</u></em>
The third side of a triangle can be found when we know two sides and the angle between them
Here, angle between 90 meters and 130 meters is 65 degrees
From figure,
a = 90
b = 130
c = d
Therefore,
Thus, the distance between two landmarks is 123 meters