last min math II questions with PR #2

Archive SAT Subject Test Preparation
1

<p>I just finish my PR #2 and some of these i dont get:</p>

<p>16)in titheland, the first 1000 florins of any inheritance are untaxed. After the first 1000 florins, inheritance are taxed at a rate of 65%. how large must inheritance be, to the nearest florin, in order to amount to 2500 florins after the inhericane tax?
Answer: 2.58</p>

<p>21) runner A travels a feet every min. Runner B travels b feet every second. In one hour, runner A travels how much farther than runner B, in feet?</p>

<p>60(a-60b)</p>

<p>33) A wire is stretched from the top of the two-foot-tall anchor to the top of a 50 foot tall antenna. If the wire is straight and has a slop of 2/5, then what is the length of the wire in feet?
123.26</p>

<p>36) in triangle ABC, sinA/sinB = 7=10 and sinB/sinC=5/2. If angles A, B, and C are opp sides a,b, and c, respectively, and the triangle has a perimeter of 16, whats length of a?
5.3</p>

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<p>lol ur answer to 16 = ??? that’s not even 3 florins</p>

<p>u do this by setting up an equation: (x - 1000)*(1-.65)+1000=2500
im too lazy to do that out</p>

<p>21) the number of feet A travels = 60 <em>a, and the number of feet Btravels is 3600</em>b (3600 seconds in an hour). then you subtract 60a-3600b which is the same thing as 60(a-60b)</p>

<p>33) uh…just up a right triangle. 50/x = 2/5, solve for x, and do sqrt(50^2+x^2)</p>

<ol>
<li>use law of sines</li>
</ol>

3

<p>33) Use 48/x, not 50/x because it started 2 feet up.</p>