Explain what the "sky's starry questions" might mean.

The mean of 10 scores is 11.6. What is the sum of the scores?

What does the word empirical in empirical formula mean?

What does suboptimization mean?

Write the given number in simplest form, without a negative radicand.

$$\sqrt{-169}$$

Determine the total number of valence electrons for each of the following: a. $\mathrm{SBr}_2$ b. $\mathrm{NBr}_3$ c. $\mathrm{CH}_3 \mathrm{OH}$ d. $\mathrm{NH}_4{ }^{+}$

Identify the hypothesis and conclusion in the following propositions, and state their truth values. Then determine whether the entire proposition is true or false.

If London is in Mongolia, then Chicago is in America.

Seventy-six percent of the brass instruments in the band leading the parade were trombones. If there were 100 brass instruments, how many were trombones?

What does the "$E$" mean, such as in the number $9.0122222900391E-5$ ?

The central irony in this story-the difference between what should and what does happen-revolves around an injustice done to the main character. Explain what this irony is. How does the end of the story reveal yet another irony and yet another injustice?

A milling operation was used to remove a portion of a solid bar of square cross section. Knowing that $a=1.2 \mathrm{~in}$, $d=0.8 \mathrm{~in}$, and $\sigma_{all}=8\mathrm{~ksi}$, determine the magnitude P of the largest forces that can be safely applied at the centers of the ends of the bar.

How many of the carbons in 2-methylpentane $\left[\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CHCH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}\right]$ are prochirality centers? A. One B. Two C. Three D. Four

Find the geometric mean of the two numbers. 14 and 20.

Divide: $31_{\text { seven }} \sqrt{2426_{\text { seven }}}$.