PLEASE ANSWER WITH A PROPER ANSWER QUICKLY If the first equation is multiplied by 3 and then the equations are added, the result is .
3 x + y = 3
x - 3 y = -2

8 x = 7
10 x = 7
10 x = 11

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

y do u put "subscirbe to ence" on a app for ppl who need with their work?