Which step could you use to start solving the system of equations below? x + y = 3
-3x - 2y = -7

Group of answer choices
A. Multiply -3x - 2y = -7 by 2 and subtract it from x + y = 3

B. All of the above.

C. Multiply x + y = 3 by 3 and add it to -3x - 2y = -7

D. Add x + y = 3 to -3x - 2y = -7

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2

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