The sum of two numbers is 28. the first number, x, is three
times the second number, y.
which system of equations can be used to find the two
numbers?
x+y=28
1x=3+y
o | xy=28
[x=y
{ xy=28
1x=3+y
x+y=28
1x=34
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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.

answer: howdy

step-by-step explanation: