Courtney reduced the number of hours that she spends in front of screens each day. now she spends more time on homework. courtney was able to raise her grade point average (gpa) from 1.8 to 2.7. by what percentage did courtney raise her gpa? a) 67% b) 50% c) 33% d) 25%

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.

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation: