13. In AABC shown below, side CA is extended to point D with mZDAB = (180 – 3x),
mZB = (6x - 40)º, and m2C = (x + 20).
What is mZBAC? Justify your reasoning. Include a sketch of the given picture to
illustrate your solution.
1) 20°
2) 40°
3) 60°
4) 80°

answer: y=0 if that is what u r looking for

hi how are you doing today? if you ever need just tell me

step-by-step explanation:

isocolese triangle

we know that the line connect a and b is the hyptonuse

so first find the hypotonuse length using the distance formula, call the length c

since it is an isocolese triangle, the lengths of the legs are the same

using pythagorean theorem,

in this case, a=b since isocolese triangle so we get

or

we can find c so we can find the distances

we know that if we draw 2 circles, each has center at a and b, and find where they intersect, we can the 2 possible locations for c

if a has center at (xa,ya) and b has center at (xb,yb), then we can solve where

and

intersect to find where they intersect

i'm not going to put an example because i have to go to class. i hope this explanation is enough

$452.90 because you needed to round to the nearest cent