How high is the end of the ladder against the building?

D.

Step-by-step explanation:

its a right triangle, so we can use the pythagorean theorem to find h

(pythagorean theorem is a^2+b^2=c^2, c is the hypotenuse)

h^2+4^2=13^2

h^2+16=169

h^2=153

h=sqrt153

h≈ 12.4ft

c-4 is the final answer! : )

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.