Which numbers can represent the lengths of the sides of a triangle?
A) (1,3,4)
B) (4,4,9)
C) (5,7,9)
D) (8,5,3)
I tried adding the numbers and dividing them into 180 but they all heve decimals so i think i am doing it wrong Help please-- also could you tell me how you did it?
Thanks!
2007-11-15 07:19:37 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Well A squared + B squared = C squared which means that if you square the lowest 2 numbers it will equal the highest number when it is squared. But this equation didnt work for any of these problems. I think I'd go with B because all the others are scaline and B is iscoseles so its definitely different.
2007-11-15 07:33:06 · answer #1 · answered by Anonymous · 0⤊ 0⤋
c- 5,7,9
This is because to have a triangle, the sum of the two smaller sides (in this case 5 and 7) must be larger than the third side (in this case 9). 5+7=12 and 12>9. Therefore, 5,7,9 can be the sides of a triangle, but the other three sets of numbers don't work.
2007-11-15 15:28:38 · answer #2 · answered by mitell23 2 · 0⤊ 0⤋
in a triangle one side square plus the square of the other side should be more then the longest side square so in this question the answer is D
2007-11-15 15:26:06 · answer #3 · answered by KaReNjO 1 · 0⤊ 1⤋
C 5,7,9
The sum of any two sides must be greater than the third side.
2007-11-15 15:27:47 · answer #4 · answered by ironduke8159 7 · 0⤊ 0⤋
B
its to hard for me to explain how i did it, but its B
2007-11-15 15:28:32 · answer #5 · answered by Anonymous · 0⤊ 0⤋