The table shows how the cost of Paco‘s birthday party depends on the number of guest call support those birthday party determine the cost of having 12 guest at the party

the answer is c)8

step-by-step explanaction:

step-by-step explanation:

answer is (b.

164 ft2)

a base  

18

b base  

7

h height  

8

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