A news bulletin reports a powerful earthquake 200 kilometers off the coast of California. Hours later, there's no sign of any tsunami anywhere on the West Coast. Why not?

A survey asking students whether or not they snacked most days reports a margin of error of $5 \%$. About how many students do you think were surveyed?

Hydrolysis of the compound $B_5H_9$ forms boric acid , $H_3BO_3.$ Fusion of boric acid with sodium oxide forms a borate salt, $Na_2B_4O_7$. Without writing complete equations, find the mass (in grams) of $B_5H_9$ requ ired to form 151 g of the borate salt by this reaction sequence.

A certain element $X$ forms a compound with oxygen in which there are two atoms of $X$ for every three atoms of $\mathrm{O}$. In this compound, $1.125 \mathrm{~g}$ of $X$ are combined with $1.000$ $\mathrm{g}$ of oxygen. Use the average atomic mass of oxygen to calculate the average atomic mass of $X$. Use your calculated atomic mass to identify the element $X$.

Amazon.com, Inc.’s financial statements are presented in Appendix D. Financial statements of Wal-Mart Stores, Inc. are presented in Appendix E. Instructions for accessing and using the complete annual reports of Amazon and Wal-Mart, including the notes to the financial statements, are also given in Appendices D and E, respectively.

Instructions
What conclusions concerning these two companies can be drawn from these data?

Ziegler Corporation reports net income of $380,000 and a weighted-average of 200,000 shares of common stock outstanding for the year. Compute the earnings per share of common stock.

State the claim mathematically. Write the null and alternative hypotheses. Identify which is the claim.

A research organization reports that 33% of the residents in Ann Arbor, Michigan are college students.

Do you think that mandatory standards should be developed for the design of graphs of financial data that are included in annual reports and other periodic communications to investors? Why, or why not?

Now, fill in the blanks in the following sentences with the correct forms of the verbs in parentheses.
Nosotras... hoy, ¿no? (patinar)

Consider the transition between two forms of solid tin, $\operatorname{Sn}(s$, gray $) \rightarrow \operatorname{Sn}(s$, white $)$. The two phases are in equilibrium at $1 \mathrm{bar}$ and $18^{\circ} \mathrm{C}$. The densities for gray and white tin are $5750$ and $7280 \mathrm{~kg} \mathrm{~m}^{-3}$, respectively, and the molar entropies for gray and white tin are $44.14$ and $51.18 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$, respectively. Calculate the temperature at which the two phases are in equilibrium at $350 . \mathrm{bar}$.

Which of the following items should be disclosed in interim reports?

a. Total assets
b. Total liabilities
c. Cash flow from operating activities
d. Gross revenues

Determine whether the pair of ratios forms a proportion.

$$\frac { 2 } { 5 }$$

and

$$\frac { 10 } { 25 }$$

Determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. Credit reports contain bankruptcy information.

Given item below contains an error in sentence structure, subject-verb agreement, pronoun, antecedent agreement, placement of a modifier, verb forms, pronoun forms, or formal, standard English Revise given sentence to correct any errors.
Each of the gymnasts performed their routine for the coach.