Math help.?

3 ⤊

find the measure of an angle who supplement measure nineteen times its measure.

2006-11-15 13:48:17 · 3 answers · asked by <3Aja*Marissa*Ashley<3 2 in Science & Mathematics ➔ Mathematics

3 answers

a + 19a = 180
20a = 180
a = 180/20
a = 9
Your angle is 9 degrees

2006-11-15 13:51:05 · answer #1 · answered by smarties 6 · 1⤊ 0⤋

Since supplementary angles must add up to 180Â°...
x = the measure of the angle in question
19x = supplement angle

x + 19x = 180
20x = 180
x = 9

Check: 9 + (19 * 9) = 9 + 171 = 180

So the answer is 9Â°.

2006-11-15 21:52:19 · answer #2 · answered by Anonymous · 1⤊ 0⤋

x+19x=180

20x=180

x=180/20

x=9

2006-11-15 21:50:20 · answer #3 · answered by jerzey79 2 · 1⤊ 0⤋