You reflect triangle pqr, with vertices p(-2, -4), q(-3, -1), and r(-4, -4), across the y-axis to get triangle p′q′r′. what are the coordinates of triangle p′q′r′?

a. p′(-2, 4), q′(-3, 1), r′(-4, 4)

b. p′(2, -4), q′(3, -1), r′(4, 4)

c. p′(-2, 4), q′(-3, 1), r′(4, -4)

d. p′(2, -4), q′(3, -1), r′(4, -4)

Vertical angles must check all that apply

Which angle of rotation is an angle of rotational symmetry for all figures?

On a certain portion of an experiment, a statistical test result yielded a p-value of 0.21. what can you conclude? 2(0.21) = 0.42 < 0.5; the test is not statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 21% of the time, so the test is not statistically significant. 0.21 > 0.05; the test is statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 79% of the time, so the test is not statistically significant. p = 1 - 0.21 = 0.79 > 0.05; the test is statistically significant.