<u>1</u><u> </u><u>1</u><u>\</u><u>2</u><u>. </u><u> </u><u>s</u><u>o</u><u> </u><u>h</u><u>e</u><u> </u><u>h</u><u>a</u><u>d</u><u> </u><u>t</u><u>h</u><u>a</u><u>t</u><u> </u><u>f</u><u>r</u><u>a</u><u>c</u><u>t</u><u>i</u><u>o</u><u>n</u><u> </u><u>a</u><u>s</u><u> </u><u>a</u><u>l</u><u>l</u><u> </u><u>a</u><u>f</u><u>t</u><u>e</u><u>r</u>
Step-by-step explanation:
Each interior angle=140°
(n-2)180°/n=140°
180°n-360°/n=140°
180°n-360°=140°n
180°-140°=360°
40°n=360°
n=360°/40°
n=9
Hence, the number of sides of the polygon is 9.
It is nonagon .
Remember that exponentioal rule
x^m times x^n=x^(m+n)
therefor
7^4 times 7^-6=7^(4-6)=7^(-2)
remember the other rule
x^-m=1/(x^m) so
7^-2=1/(7^2)=1/49
answe ris A