Given: and Prove: slope of × slope of = -1

StatementsReasons
1.
is similar to Given
2.Property of similar triangles
3. slope of
slope of Definition of slope
4. slope of slope of Multiplying the slopes
5. slope of slope of Substitution property of equality
6. slope of slope of = -1Simplifying the right side

The table shows the proof of the relationship between the slopes of two perpendicular lines. What is the missing statement in step 2?

A.

B.

C.

D.

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.