Question

The lengths of the sides of a triangle form three consecutive odd numbers. The perimeter is 21 centimeters. What is the length of the longest side?

Answer 1

i had 7 and they said it was wrong.

Answer 2

well, all this question is asking is

"what consecutive odd numbers add up to 21? and what is the largest digit?"

Answer 3

for instance, 3+5+7 does not equal 21, therefore it can't be 7

7+9+11 does not equal 21, so it can't be 11

however, there is a sequence of odd numbers that includes 7, that equals 21.

Answer 4

it was 9

Answer 5

5+7+9=21

Answer 6

5+7+9 is the answer

Answer 7

longest side = 9