set up a ratio to find the length:
15/12 = DE/16
cross multiply the 15 & 16:
15 * 16 = 240
divide that by 12 to get DE
240 / 12 = 20
DE = 20
Answer: Yes
Step-by-step explanation:
See attached file. Brainly did not allow me to send my explanation normally. Sorry for the trouble!
Answer:
<h2>E. 22</h2>
Step-by-step explanation:
<em>Look at the picture</em>.
The lines <em>l</em> and <em>m</em> are parallel, therefore alternate interior angles are congruent.
Therefore 
Supplementary angles add up to 180°.
Therefore
<em>add 16 to both sides</em>
<em>subtract 5x from both sides</em>

We know: the sum of the triangle angle measures is 180°.
Therefore we have the equation:

7 x 2 = 14
3 x 1 = 3
14+3 = 17
answer 17 unit^2
Please help!
Remember what we know about vertical angles and solve for x.
Answer: