Answer:
7/15 Hope it helps
Step-by-step explanation:
You can round 396 to 400 and 71 to 70. then you just multiply them and get 28,000. :))
Answer:
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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:
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<em> -- proved</em>