Question

which set of numbers could represent the lengths of the sides of a triangle?
a. 9,12,21
b. 8,12,24
c. 8,12,18
d. 9,12,15

Answer 1

a couldn't, because 9 + 12 isn't greater than 21.
b couldn't, because 8 + 12 isn't greater than 24
both c and d could, because a+b>c and b+c>a and a+c>b

Answer 2

so can you help me solve it?

Answer 3

is that from pre-Algebra

Answer 4

algebra 1B i believe

Answer 5

the answer is both C and D. If it is multiple choice, are you sure you didn't post it incorrectly?

Answer 6

Im sure

Answer 7

is it asking for a right triangle? Because then D. would be the answer.