Answer:
<em></em>
<em></em>
<em></em>
Step-by-step explanation:
Required
Show that:

To make the proof easier, I've added a screenshot of the triangle.
We make use of alternate angles to complete the proof.
In the attached triangle, the two angles beside
are alternate to
and 
i.e.


Using angle on a straight line theorem, we have:

Substitute values for (1) and (2)

Rewrite as:
<em></em>
<em> -- proved</em>
Answer:
150 ft. x 400 ft. = 60,000
Step-by-step explanation:
Answer:
x+2y=-7
Step-by-step explanation:
2y + x =-7
x+2y=-7
Step-by-step explanation:
<h3> cookbooks : novels </h3><h3> 2 : 11 </h3><h3> So 6 : 33 </h3>
<h3> cookbooks : reference books </h3><h3> 3 : 4 </h3><h3> So 6 : 8 </h3>
novels : cookbooks : reference books
<h3> 33 : 6 : 8 </h3>
Answer:
15x 12y=489
Step-by-step explanation:
In the problem it says that x is the number of adult shirts which 15 and y is the number for a youth shirt. So it would be 15x 12y. Hope this helped! :D