Instrument/tool or questionnaires used in research should report how valid and reliable they are. What is one statistical measure used to determine scale reliability of an instrument/tool or questionnaire

for b its (t) and c its (d)

step-by-step explanation:

5/20 so 25%

step-by-step explanation:

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)

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