Answer:2508
Step-by-step explanation:
To solve for cos use
adjacent over hypotenuse
divide the lengths of the sides
adj. / hyp.
51-34 gives us QR=17
Needs to have same relation as the known side 17/34=.5
So
14*2=28
To check
14/28=.5
It worked so PT=28
Answer: 
Step-by-step explanation:


<em>Thus, the expressions will be used: (5x² + 15x - 20) and (x + 4).</em>
<em>Let's check:</em>
