2006-12-10 07:56:39 · 3 answers · asked by zachary m 1 in Science & Mathematics ➔ Mathematics
what is the value of x on a triangle if one acute angle says (4x-20) and the other acute angle says 3x so what is the other acute angle?
2006-12-10 08:15:27 · update #1
what is the value of x on a triangle if one acute angle says (4x-20) and the other acute angle says 3x what is the last acute angle?
2006-12-10 08:24:21 · update #2
You need a value for the 3rd angle. is there a number there?
The way you would figure it out is to add all three angles and set the answer to 180.
So it would look like:
(missing angle) + (4x - 20) + 3x = 180
and solve for x.
2006-12-10 08:00:47 · answer #1 · answered by Jim Burnell 6 · 0⤊ 0⤋
Since you only reference 2 angles, maybe you have a right triangle in thsi problem. The angles in any triangle sum up to 180, so the sum of the other two angles would be 90
(4x - 20) + 3x = 90
7x - 20 = 90
7x = 110
x = 110/7
And maybe you just left out some information
2006-12-10 16:10:26 · answer #2 · answered by kindricko 7 · 0⤊ 0⤋
Inside Angles of Triangle total 180 degrees... Therefore
Angle a=4x-20
Angle b=3x
Angle c=180-((4x-20)+3x)
Solve for x
180-(4x-20)-3x=Angle c
20-4x+3x+180-((4x-20)-3x)=180
20-1x+180-4x+20+3x=180
220-2x=180
220-180=2x
40=2x
20=x
Angle a=4x-20=60
Angle b=3x=60
Angle c=180-((4x-20)+3x)=60
This is a 60 degree equilateral TRIANGLE
Straight Algebra
2006-12-10 16:44:39 · answer #3 · answered by What is the meaning of life ? 1 · 0⤊ 0⤋