Hey there!
Here is your answer:
<u><em>The proper answer to this question is "21378.6".</em></u>
Reason:
<span><u><em>2.13786 *10^4</em></u>
<u><em>Since the exponent is positive move to the right.</em></u>
<u><em>2_1_3_7_8.6</em></u>
<em>Therefore the answer is 21378.6!</em>
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit</span>
20*15=300
It's "too short", but there's not much else to say here.
The oposite angles must be equal and adjacent angles must be supplementary
so
D=B and A=C
and
A+D=180=A+B=B+C=C+D
so ifD=42, then
A+D=180
A+42=180
minus 42 both sides
A=138=C
angle C has to be 138 degrees
7.186<7.36<7211<14320.........