Question

If BC = 6 and AD = 5, find DC.

Answer 1

whats the whole question?

Answer 2

let DC =x

BD² = 5X

according to pythagorean theorem:

BD²+DC²=BC² (in triangle BCD)

5x+x²=6²
x²+5x-36=0

x = 4 and x= -9 (according to quadratic formula)

real solution is x=4 ( length cannot be negative)

DC=4

Answer 3

"If BC = 6 and AD = 5, find DC" appears to be out of context. Where's the diagram that shows points B, C, A and D and line segments BC, AD and DC? Please share it.

Answer 4

yes. I'm baffled by the question as it stands!!

Answer 5

@sdftnstgs: Please repost your question when you're able to share the diagram. Thanks.

Answer 6

diagram, please? Use the Draw utility (below).