Suppose you arrange 48 into rows. the first row has 3 counters each row after that has 2 more counters than the row before. how many rows do yoy need to make to use all 48 counters

23.

Step-by-step explanation:

thats the answer

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.