jordanizumi12 jordanizumi12

21-10-2019
Mathematics

contestada

<1 and <2 are supplementary angles. m< 1= 11a+19. m< 2 = 60 - 9. Find m<2.

lt1 and lt2 are supplementary angles mlt 1 11a19 mlt 2 60 9 Find mlt2 class=

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jimrgrant1 jimrgrant1

21-10-2019

Answer:

∠2 = 51°

Step-by-step explanation:

Supplementary angles sum to 180°, thus

11a + 19 + 6a - 9 = 180, that is

17a + 10 = 180 ( subtract 10 from both sides )

17a = 170 ( divide both sides by 17 )

a = 10

Hence

∠2 = 6a - 9 = (6 × 10) - 9 = 60 - 9 = 51°

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