Heyitsmeeeeee Heyitsmeeeeee
  • 12-08-2018
  • Mathematics
contestada

A. 170
B. 300
C. 155
D. 280
Need help asap

A 170 B 300 C 155 D 280 Need help asap class=

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sqdancefan
sqdancefan sqdancefan
  • 12-08-2018

The measure of the external angle is half the difference of the measures of the arcs it intercepts.

... (5x-10) = (1/2)(195 - (8x+17))

... 10x - 20 = 178 - 8x

... 18x = 198

... x = 11

Arc EHF = 195° + (8·11 +17)° = 300°

The appropriate selection is

... B. 300

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