Numerade

Questions asked

BEST MATCH

What is the oxidation number of N in N2H4? +2 –2 +4 0 –4

BEST MATCH

In 2010, a study showed that 60% of Americans stated that television was their primary source for news, 10% primarily used their computer, 5% used their mobile device and 25% read newspapers. A media company has decided to conduct a study in the year 2024 and the observed frequencies are found below. Is there evidence to show how Americans consume news is different from the study in 2010? Observed: Source; Frequency: TV; 280, Computer; 206, Mobile; 194, Newspaper; 20 Expected: Source; Frequency: TV; ?, Computer; ?, Mobile; ?, Newspaper; ? Cell $\chi^2$ Source; Frequency: TV; ?, Computer; ?, Mobile; ?, Newspaper; ? a.) State the proper hypotheses. b.) State your level of significance. c.) Calculate the test statistic and the p-value. Then draw the appropriate distribution and label the test statistic and the p-value d.) Make a decision and state the reason for your decision. e.) Make a concluding statement in the context of the problem. Don't forget to to perform the post-bog opalygin if no00000

View Answer

BEST MATCH

Question 6 (10 points) For $\int \sin^7(\theta) \cos(\theta) d\theta$, use a suitable change of variables to determine the indefinite integral.

View Answer

BEST MATCH

The problem of "cyclical asymmetry" refers to the idea that Question 70 options: a) the monetary authorities have been less willing to use an easy money policy than they have a tight money policy. b) cyclical downswings are typically of longer duration than cyclical upswings. c) a tight money policy can force a contraction of the money supply, but an easy money policy may not achieve an expansion of the money supply. Tight money is better at causing an end to inflation but an easy money policy may not fight a recession effectively. d) an easy money policy can force an expansion of the money supply, but a tight money policy may not achieve a contraction of the money supply. Easy money may fight a recession effectively, but a tight money policy may not be effective in fighting inflation.

View Answer

BEST MATCH

4. Here are typical programs for time delay using loops when the microprocessor operates at 5 MHz. a) Draw the flow chart of each program and briefly explain how each functions. b) What is the difference between the two programs? c) What is the initial value of the registers for each program? d) Compute the time-delay T_(D) generated by each program. e) In Program #2, at which value should register B be initialized to produce a delay of 0.1s. Program #1 Memory address Machine Codes Labels Mnemonics Operands Comments T state 8000 06,80 MVI B,80 Initialize Register B 7 8002 05 LOOP DCR B Decrement Register B 5 8003 C2,03,80 JNZ LOOP Jump not zero to LOOP 10 Program #2 Machine address Codes 8200 06,80 8202 0E,FF 8203 0D 8204 C2,03,82 8207 05 8208 C2,02,82 Labels Mnemonics Operands MVI B,80 MVI C,FF DCR C JNZ LOOP-I DCR B JNZ LOOP-II Comments Initialize the Register B Initialize the Register C Decrement Register C Jump not zero to LOOP-I Decrement Register B Jump not zero to LOOP-II T state: 7 LOOP-II LOOP-I 5 10 5 10

View Answer

BEST MATCH

Hedrick Smith referred to an overabundance of each of these goods in the former Soviet Union EXCEPT: cross-country skis. accordions. rugs. radios.

View Answer

BEST MATCH

4. (a) Let $f: A \to B$ and $g: B \to C$ be functions. Show that if $g \circ f$ is injective, then so is $f$. (b) Give an example of sets A, B, C and functions $f: A \to B$ and $g: B \to C$ such that $g \circ f$ is injective but $g$ is not. 5. Let A be a finite set and $f: A \to A$ a bijection. Show that there exists a positive integer $n$ such that $f^n$ is the identity. (Here $f^n$ means $f$ composed with itself $n$ times). 6. Let A be any set, and let $A \to 2^A$ be any function. Show that $f$ is not surjective.

View Answer

BEST MATCH

T Find Mass, Mx, My and and y of the Lamina bounded by y = 4 - + 3, y = and z =0.and 2 with the density function (, y) = 7 - ( + y) . Provide an answer accurate to at least 2 decimal places. Diagram of Lamina Note: The graph is an example. The scale and equation parameters may not be the same for your particular problem. Mass : Mx= Mys Hint: Suggest using the rectangular coordinate system.

View Answer

BEST MATCH

Texts: Part A Find the admittance Yab in the circuit seen in (Figure 1). Take that R = 5 , R = 6 , R = 7 and R = 12.2 Express Yab in rectangular form. Express your answer in millisiemens to three significant figures. Enter your answer in rectangular form. View Available Hint(s) Submit Request Answer Provide Feedback Figure 1: -j12Ω ER, -j2Ω ER 3100Ω R

View Answer

BEST MATCH

2. $f(x, y) = \frac{x^2}{\sqrt{xy}}$, $g(x, y) = \frac{x^2 - 9y^2}{4y^2 - 4x^2}$, $h(x, y) = \frac{y^2 - x^6}{x^3y}$ a. Find and sketch the domains of $f$, $g$ and $h$. b. Find $\lim_{(x, y) \to (2, 1)} f(x, y)$, $\lim_{(x, y) \to (0, 11)} g(x, y)$, $\lim_{(x, y) \to (3, 3)} h(x, y)$. c. Show that $\lim_{(x, y) \to (0, 0)} f(x, y)$, $\lim_{(x, y) \to (0, 0)} g(x, y)$, $\lim_{(x, y) \to (0, 0)} h(x, y)$ does not exist. d. Find $\nabla f(x, y)$, $\nabla g(x, y)$, $\nabla h(x, y)$.

View Answer

ashley r.