Compare and contrast the Lewis structures of nitromethane, CH3NO2, and methyl nitrite, CH3ONO. Write at least two resonance forms for each molecule. Based on your examination of the resonance forms, what can you say about the polarity and bond order of the two NO bonds in each substance?

Compare and contrast the Lewis structures of nitromethane, $\mathrm{CH}_3 \mathrm{NO}_2$, and methyl nitrite, $\mathrm{CH}_3 \mathrm{ONO}$. Write at least two resonance forms for each molecule. Based on your examination of the resonance forms, what can you say about the polarity and bond order of the two NO bonds in each substance? (Nitromethane is used as a solvent as well as a building block in organic synthesis. The two embedded oxygens allow it to burn with less atmospheric oxygen, a quality exploited by drag racers, who add "nitro" to their fuel for extra power).

For aesthetic reasons, chains are sometimes used instead of downspouts on small buildings in order to direct roof runoff water from the gutter down to ground level. The architect of the illustrated building specified a 6-m vertical chain from A to B, but the builder decided to use a 6.1-m chain from A to C as shown in order to place the water farther from the structure. By what percentage n did the builder increase the magnitude of the force exerted on the gutter at A over that figured by the architect? The chain weighs 100N per meter of its length.

The following items apply to determining sample sizes using random sampling from large populations for attributes sampling. Select the most appropriate response for each question.

a. If all other factors specified in a sampling plan remain constant, changing the ARO from 5% to 10% will cause the required sample size to

$\quad\quad$ (1) increase.

$\quad\quad$ (2) remain the same.

$\quad\quad$ (3) decrease.

$\quad\quad$ (4) become indeterminate.

b. Of the four factors that determine the initial sample size in attributes sampling (population size, tolerable exception rate, acceptable risk of overreliance, and expected population exception rate), which factor has the least effect on sample size?

$\quad\quad$ (1) Population size

$\quad\quad$ (2) Expected population exception rate

$\quad\quad$ (3) Tolerable exception rate

$\quad\quad$ (4) Acceptable risk of overreliance

c. The sample size of a test of controls varies inversely with:

$$\begin{array}{lcc} & \textbf{Expected Population} & \textbf{Tolerable}\\ & \textbf{Exception Rate} & \textbf{Exception Rate}\\ \\ (1) & \text{No} & \text{Yes}\\ (2) & \text{Yes} & \text{No}\\ (3) & \text{No} & \text{No}\\ (4) & \text{Yes} & \text{Yes}\\ \end{array}$$

George and Aliyah are determining the probability of randomly choosing a blue or red marble from a bag of 8 blue marbles, 6 red marbles, 8 yellow marbles, and 4 white marbles. Is either of them correct? Explain.

Determine whether the given equation is linear or nonlinear. $9 x-7=4 x+3$

Solve each quadratic equation by completing the square. $x^{2}-3 x=28$

Daniela habla sobre su familia y el lugar donde vive. Escucha con atención cada parte y di si crees que eso es algo positivo o negativo para la sociedad. Explica por qué.

How did the arrival of Europeans affect both Native American and European cultures?

Use the given figure to solve the following exercise.

If $m \angle Y D F=121$ and $\overrightarrow{D R}$ bisects $\angle F D I$, find the measure of the following angle.

$$\angle R D I$$

A prestigious college is interested in factors that might be associated wit h better graduation rates . The administrators wonder whether there is a relationship between acceptance rates and graduation rates . Using the regression output, identify the standard deviation of the residuals and explain what it means in the context of the problem. $\newline$ Dependent variable is 6-Year Graduation Rate $\newline$ R-squared= 69.6% $\newline$ s = 2.86 with 50 - 2 = 48 degrees of freedom $\newline$

$$\begin{alignat*}{7} \textbf{Variable} \quad &\textbf{Coefficient} \quad &\textbf{SE(Coeff)} \quad &\textbf{t-Rate} \quad &\textbf{P-Value} \\ \text{Intercept} \quad & 97.663 \quad & 0.84406 \quad & 114.999 \quad & <0.0001\\ \text{Acceptance Rate} \quad & -0.25101 \quad & 0.023951 \quad & -10.480 \quad & <0.0001 \end{alignat*}$$

The college administrators in the exercise, tested the hypotheses $H_0: \beta_1=0$ vs $H)A:\beta_1\ne0$ and rejected the null hypothesis because the P-value was less than 0.000 l. What can they conclude about the relationship between admission rates and graduation rates?

Factor each quadratic expression

$$2x^2+7x-15$$

Busca la palabra o frase que corresponde a cada definición. (pp. 73, 81)

• crecer
• descubrir
• la zona peatonal
• botar
• el basurero
• el porvenir
• los carros eléctricos
• la fábrica
• la energia solar
• los aparatos eléctricos
• el ayuntamiento
• el aire
• mejorar
• sembrar
• crear

lo que respiramos

Quale set di coppie ordinate rappresenta una funzione?

A {(1, 1); (2, 2); (3, 3); (4, 4)},

B {(1, 0); (2, 1); (1, 3); (2, 4)},

C {(1, 1); (1, 2); (1, 3); (1, 4)},

D {(10, 1); (10, 2); (12, 3); (12, 4)}