Question

What is the length of ?

Answer 1

notice those two triangles
they each have 2 eaual angles, so that means they ARE?

Answer 2

similar?

Answer 3

erk equal rather

anyhow... yeap, they're similar, thus, use proportions to get "x" :)

Answer 4

help help needs the help

Answer 5

84/7 is 12 (the proportion) but my options are a)144 b)128 c)108 and d)136 for x
and anything subtracted by156 will make it smaller than x and thus doesnt make sense? because it has to be 12x greater than x @jdoe0001

Answer 6

ohhh! i see its rotated! ty @jdoe0001

Answer 7

hmmm \(\bf \cfrac{AB}{DE}=\cfrac{AC}{CE}\implies \cfrac{84}{7}=\cfrac{156-x}{x}\)

Answer 8

i think i did my math wring:
84x=1092-7x
77x=1092
x=14.18
@jdoe0001
none of my options is that

Answer 9

77x?

Answer 10

84x-7x=77x @jdoe0001

Answer 11

hmmm

Answer 12

oh i see i was supposed to add dgnfjkrbgeaorbgja ty @jdoe0001

Answer 13

yeap

Answer 14

\(\bf \cfrac{AB}{DE}=\cfrac{AC}{CD}\implies \cfrac{84}{7}=\cfrac{156-x}{x}
\\ \quad \\
84x=1092-7x\implies 91x=1092\implies x=\cfrac{\cancel{1092}}{\cancel{91}}\implies x=12\)