Sagot :
Answer:
x = 30
b = 30
a = 90
Step-by-step 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:
Step-by-step 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