Auna hoja cuadrada y cuadriculada con 100 cuadritos por lado se le traza una diagonal principal. ¿cuántos triángulos como máximo se pueden contar en total?

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Need on this one asap im almost done with this subject

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?