Answer:
Step-by-step explanation:
Given
Vector A has two units in length due to west i.e.
Vector B has one unit in length due to North i.e.
Also 
i.e. 
also 
i.e. 
From 1 and 2
Answer:
1 chocolate will cost about $0.73
Explanation:
You'd have to fine the unit rate. To do so you divide the cost,$11, by the number of chocolates,15 .
Answer:
4.732 grams
Step-by-step explanation:
2 US fluid ounces is exactly 59.147059125 mL of volume. 8% of that volume is 4.73176473 mL.
For a solution of this type, where 1 g/100 mL is considered a 1% solution this is the number of grams of solute needed.
About 4.732 grams of solute are needed to prepare 2 fl oz of 8% solution.
_____
We have assumed that 1 gram of solute gives you 1 gram of iodine. Depending on the exact solute used, that may or may not be the case.
Since 12 inches is 1 foot, 8 inches must be 96 inches (8 x 12)
the ratio is 3:96.
Oh wait, it can be divided once more by 3.
Therefore, the (final) answer for the scale of the drawing is 1:32
