Rylan is testing 2 different types of nail polish on her fingernails to determine which one lasts longer. she purchases brand a and brand b from the drug store. she then paints her nails with brand a and her sister's nails with brand b. she compares the nail polish at the end of the week and determines that brand b lasts longer because there are fewer chips than brand a. why is her conclusion not valid?

she painted her sister's nails with brand a, not her own nails.
she painted her sister's nails with brand b, not her own nails.
she did not say how much each polish chipped by the end of the week.
she purchased 2 different types of nail polish.

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

Find the slope of the line that passes through the points (-2, 4) and (-5, -6). -2/7 10/3 -2/3

Two groups of students were asked how many hours they spent reading each day. the table below shows the numbers for each group: group a 1 2 1 1 3 3 2 2 3 group b 3 2 3 2 2 2 1 1 2 based on the table, which of the following is true? the interquartile range for group a students is 0.5 less than the interquartile range for group b students. the interquartile range for group a students is equal to the interquartile range for group b students. the interquartile range for group a employees is 0.5 more than to the interquartile range for group b students. the interquartile range for group a employees is 1 more than the interquartile range for group b students.