2006-06-06 10:03:59 · 9 answers · asked by riema 1 in Science & Mathematics ➔ Mathematics
4x+x+40+2x = 180
7x+40 = 180
7x = 140
x = 140/7
x = 20
2006-06-06 10:06:48 · answer #1 · answered by Brad K 2 · 0⤊ 0⤋
20
2006-06-06 17:07:03 · answer #2 · answered by James 1 · 0⤊ 0⤋
All angles within a triangle add up to 180
(4x) + (x + 40) + (2x) = 180
4x + x + 40 + 2x = 180
7x + 40 = 180
7x = 140
x = 20
4(20) = 80
20 + 40 = 60
2(20) = 40
ANS : 20°
2006-06-07 15:01:25 · answer #3 · answered by Sherman81 6 · 0⤊ 0⤋
x=20
2006-06-06 17:15:52 · answer #4 · answered by tony 1 · 0⤊ 0⤋
x = 20
2006-06-06 17:09:45 · answer #5 · answered by 'Blank' 3 · 0⤊ 0⤋
x=20
2006-06-06 17:06:36 · answer #6 · answered by Cirque Du Freak 4 · 0⤊ 0⤋
40
2006-06-06 17:05:04 · answer #7 · answered by playfultoyz 4 · 0⤊ 0⤋
x=20.
4x +(x+40) +2x = 180
7x= 140
x=20.
2006-06-06 17:07:07 · answer #8 · answered by P W 2 · 0⤊ 0⤋
x = 20
the angles are 80 degrees, 60 degrees, and 40 degrees, all adding up to 180 degrees
2006-06-06 17:06:19 · answer #9 · answered by Mike 2 · 0⤊ 0⤋