The perimeter of triangleABC is 30 feet. AB = 5x - 7; BC = 3x +1; AC = 4x. List the angles of triangle ABC in order from smallest to largest.
Answer Choices:
Angle A, B, and C.
Angle A, C, and B.
Angle C, B, and A
Angle C, A, and B.

Question

The perimeter of triangleABC is 30 feet. AB = 5x - 7; BC = 3x +1; AC = 4x. List the angles of triangle ABC in order from smallest to largest. 
Answer Choices:
Angle A, B, and C.
Angle A, C, and B.
Angle C, B, and A
Angle C, A, and B.

anonymous · Answer

What is the range of possible values for x? The diagram is not to scale.

anonymous · Answer

Please help @campbell_st @Loser66 @SolomonZelman

campbell_st · Answer

well you know from the perimeter information


5x - 7 + 3x + 1 + 4x = 30

solve for x

then then substitute x back into each equation to find the length of each side

then use

largest angle opposite longest side

smallest angle opposite shortest side

middle side opposite middle angle

hope this helps

anonymous · Answer

Thank you @campbell_st !

anonymous · Answer

@Loser66  can you help with the second one?

loser66 · Answer

which is the second one?

anonymous · Answer

its okay, I finishes, thanks (: