Suppose that the methods used by shoppers to pay for merchandise are as shown in the given circle graph. Two shoppers are chosen at random. What is the probability that both shoppers paid for their purchases only in cash?

Completa las oraciones usando la forma apropiada del pretérito.
yo / caminar / al centro comercial

¿Qué quiere decir el honor se fue al aldea, huyendo de las ciudades?

For each of the given enzymes (a to $\mathbf{c}$ ), indicate which of the following are needed: $\mathrm{NAD}^{+}, \mathrm{H}_2 \mathrm{O}$, FAD, GDP.

c. isocitrate dehydrogenase

An ecosystem's ________ is the maximum number of individuals it can support over a long period of time.

To form S2- ions from gaseous sulfur atoms requires 214 k/mol, but these ions exist in solids such as K2S. Explain.

Explain the difference between the total percentage increase in real GDP between 2007 and 2017 and the average annual growth rate in real GDP between the same years.

For the reaction shown, calculate how many grams of each product form when the given amount of each reactant completely reacts to form products. Assume there is more than enough of the other reactant.

$$2 \mathrm{Al}(s)+\mathrm{Fe}_2 \mathrm{O}_3(s) \longrightarrow \mathrm{Al}_2 \mathrm{O}_3(s)+2 \mathrm{Fe}(l)$$

(a) $4.7 \mathrm{~g} \mathrm{Al}$

(b) $4.7 \mathrm{~g} \mathrm{Fe}_2 \mathrm{O}_3$

Find the value of y for the given value of x using two methods. First, substitute the value of x into the equation and then solve for y. Second, solve for y and then substitute the value of x into the equation.
4x + 9y = 30; x = 3

The two _______ shared a bedroom. (sibling)

In Exercise bellow, what power function will each graph resemble on a large scale?

$$s(t)=t\left(t^4+1\right)-12 t^5$$

Explain why polyploids might have a selective advantage over the parental genotypes:

Show that multiplication distributes over addition modulo n: $a(b+c) \equiv a b+a c$ (mod n).

Be sure that you've familiarized yourself with the second set of formulas presented in this section by working $5-8$ in the Concept and Vocabulary Check. In these Exercise, express each sum or difference as a product. If possible, find this product's exact value.

$$\cos 9 x-\cos 7 x$$