What's the missing number

3/9 = □/3

Do cross multiplication.

3/9 = □/3

3 × 3 = 9 × □

9 = 9 × □

9/9 = □

1 = □

◇ The missing number (□) is 1.

Hope it helps ⚜

step by step explanation: when u removing the parentheses and combined them that would be : x+3y-x-y=2y

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