naichazhenzhu300 naichazhenzhu300

20-02-2022
Mathematics

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Given that AOB, COD, and EOF are straight lines, Find the value of 'a' of the following figures. C F 2aº За°— 10° А. B O 4a°-17° E D

Given that AOB COD and EOF are straight lines Find the value of a of the following figures C F 2aº За 10 А B O 4a17 E D class=

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unicornetfairies unicornetfairies

20-02-2022

Answer:

2a + 4a-17 + 3a - 10 = 180

9a - 27 = 180

+27

9a. =207

÷9

a= 23

Check:

2x23=46

4x23 - 17 =75

3 x 23 - 10 =59

Angle on straight lines adds to 180 (46+75+59=180)

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