The mass of the earth is about 6 × 10/\−2 times the mass of Neptune. The mass of the earth is about 6 × 10/\24 kg. What is the mass of Neptune? Give your answer in scientific notation.
6 × 1026 kg
1 × 10/\28 kg
1 × 10/\26 kg
6 × 10/\28 kg

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

What is the length of ac in the given triangle?

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.