echasteen05 echasteen05

18-11-2020
Mathematics

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50 POINTS!!! WILL MARK BRAINLIEST!!!
solve numbers 16 and 18
show work please

50 POINTS WILL MARK BRAINLIESTsolve numbers 16 and 18 show work please class=

Respuesta :

mhanifa mhanifa

18-11-2020

Answer:

16) 102°
18) 75°

Step-by-step explanation:

16)

∠QPR = 1/2(QR + SV)

26x - 2 = 1/2(131 + 18x + 1)
26x - 2 = 66 + 9x
26x - 9x = 66 + 2
17x = 68
x = 68/17
x = 4

∠QPR = 26*4 - 2 = 102°

18)

mBC = ?

∠BAC = 1/2(mBC + mFD)

8x + 6 = 1/2(8x + 11 + 9x - 7)
8x + 6 = 1/2(17x + 4)
16x + 12 = 17x + 4
17x - 16x = 12 - 4
x = 8

mBC = 8*8 + 11 = 75°

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