Completa las oraciones con la forma correcta del verbo entre paréntesis. En algunos casos puede haber más de una respuesta correcta.

Mis primos venezolanos se alegraban mucho de que nosotros _________ (ir) a visitarlos tan a menudo.

What is the pH of 1.00 L of rainwater that has dissolved $5.50 \mathrm{mg}$ of $\mathrm{NO}_2$ ? Assume that all of the $\mathrm{NO}_2$ has reacted with water to give nitric acid according to the reaction given in the Inquiry.

Estimate each sum or difference. State which method you used.

$$12.814 - 6.3791$$

A $\mathrm{W}410 \times 100$ structural steel wide- flange section is used as a horizontal lower chord member of a bridge truss. It is subjected to a tensile load of $1200 \mathrm{~kN}$. The orientation of the member is such that the $Y-Y$ axis (the weak axis) is horizontal. Calculate the maximum and minimum combined stresses due to the direct axial load and the member's own weight. The panel length (length of the member) is $8 \mathrm{~m}$.

If

$$\mathbf{P}=\left[ \begin{array}{ccc}{3} & {5} & {-11} \\ {10} & {2} & {6} \\ {-2} & {-1} & {7}\end{array}\right]$$

and

$$\mathbf{Q}=\left[ \begin{array}{ccc}{17} & {-4} & {3} \\ {-2} & {8} & {-8} \\ {3} & {-4} & {11}\end{array}\right] ,$$

find: a. P + Q b. P – Q c. Q - P

A $\mathrm{W16}\times 36$ structural steel wide-flange section is simply supported on a span length of $20 \mathrm{~ft}$. It is subjected to a uniformly distributed load of $1.0 \mathrm{~kips} / \mathrm{ft}$ and a concentrated load of $10 \mathrm{~kips}$ at midspan. a. Compute the maximum deflection using the formula method. b. Compute the maximum bending stress.

In this exercise, find (if possible) the following matrices:

$$a.\ AB\qquad b.\ BA$$

$$A=\left[\begin{array}{ccc} 2 & 4\\ 3 & 1\\ 4 & 2 \end{array}\right],\quad B=\left[\begin{array}{ccc} 3 & 2 &0\\ -1 & -3 &5\\ \end{array}\right]$$

What do you think will be the main factors influencing the number of children born to people of your generation?

Calculate the pH of the solution that results when 2.00 grams of $\mathrm{Mg}(\mathrm{OH})_2(s)$ is dissolved in $850.0 \mathrm{~mL}$ of $0.160 \mathrm{M} \mathrm{HCl}(a q)$.

Find the value of each variable. Do not use a calculator.

$$\left[\begin{array}{ccc}3+x & 4 & t \\ 5 & 8-w & y+1 \\ -4 & 3 & 2 r\end{array}\right]=\left[\begin{array}{ccc}9 & 4 & 6 \\ z+3 & w & 9 \\ p & q & r\end{array}\right]$$

Find each sum or difference.

$$\left[\begin{array}{ccc} 5 & -1.5 & 3.1 \\ 8 & 1.2 & -1 \\ 6 & 5.4 & -2.6 \end{array}\right]+\left[\begin{array}{ccc} 3.2 & 0 & -2 \\ -4.9 & -3.5 & 1.9 \\ 0.5 & -2.4 & 2.6 \end{array}\right]$$

Completa la frase Emplea la forma correcta del condicional perfecto del verbo (el condicional de haber y el participio pasado).

La Bella Durmiente__________ (dormir) para siempre, pero un príncipe la despertó con un beso.

Completa la frase Emplea la forma correcta del condicional perfecto del verbo (el condicional de haber y el participio pasado).

Ricitos de Oro __________(dormir) toda la noche en la cama del oso pequeño, pero los tres osos volvieron a casa.

Completa las oraciones sobre Mañana de sol y Paula con la forma correcta del condicional del verbo entre paréntesis.

¿Qué ________ (haber) pensado Marc Chagall del mural de la narradora?