Question

Plz.someone help me one question only plz.plz​

Answer 1

x = 30

b = 30

a = 90

Explanation:

So first let's find the 'X'

we already know one angle - 30 degrees

i think you should know the straight equals 180 so we minus 180 to 30

- 180 - 30 = 150

then we know there is 2x and 3x, which is unknown so in this we actually divide 150 with 5 cause 2 + 3 = 5, to get the x value

so x = 30

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so you know the progress so I will write the answers now

x = 30

b = 30

a = 90

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so just to check the answers I will add all the numbers to equal it to 360

30 + 90 + 60 + 30 + 60 + 90 = 360

Answer 2

Explanation:

30 + 2x + 3x = 180 {Straight line angles}

30 + 5x = 180 {Combine like terms}

5x = 180 - 30 {Subtract 30 from both sides}

5x = 150

x = 150/5 {divide both sides by 5}

x = 30

30 + 3x + a = 180 {Straight line angles}

30 + 3*30 + a = 180

30 + 90 + a = 180

120 + a = 180

{Subtract 120 from both sides}

a = 180 - 120

a = 60

b + 2b + a = 180 {Straight line angles}

3b + a = 180

3b + 60 = 180

3b = 180 - 60 {Subtract 60 from both sides}

3b = 120

b = 120/3

b = 40