En un examen tipo test de 30 preguntas se obtienen 0.75 puntos por cada respuesta correcta y se
restan 0.25 por cada error. Si un alumno ha sacado
10.5 puntos. ¿Cuántos aciertos y cuántos errores
ha cometido?

answer: 4

step-by-step explanation:

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.

d. all of the above

step-by-step explanation:

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32