Where is the rest of the question?
Answer:
10
Step-by-step explanation:
a). (17º-17'-17") = 17<span><span>º + 17'/60 + 17"/3600 = </span>17.288055...</span><span>º
</span>17.288055...º / 4 = 4.322...º = <em>4</em><span><em>º - 19' - 19.25" </em><em /></span><span><== <span>a resposta</span>
b) (18º: 8 + 23º: 4 - 8º)
18</span><span>º / 8 = 2.25</span><span>º
23</span><span><span>º / 4 = </span> 5.75</span><span>º
(2.25</span><span>º + 5.75</span><span><span>º </span>- 8º) = <em>0</em></span> <== a resposta
The first one you pick goes with 2 and the exponent -5 on the top
The second one you pick goes into I think into the 2 and exponent -32
And the third one you pick goes into the 1
The last one matches with the last one
Ik I might be late or this might not help but