Exercise 2 — Matrix file The file format for the matrix will have the first line contain 2 integers, which are the number of rows and columns. After this line, repeatedly count from 0 to 9, filling in the matrix size conditions as specified above. For example:

3 4

0 1 2 3

4 5 6 7

8 9 0 1

Randomly create different sized arrays with random numbers. There should be a space between each number. You will be using this file when reading data from a file. Hint: Consider using nested loops and modulus arithmetic (“%”) top help create this program. please help

Write a 500 word essay on why eliminating carcinogens from the environment would be a more successful strategy than attempting to find a cure for cancer. You can organize the essay as if it were a rhetorical (argumentative) essay.  1) Introductory paragraph that includes your point or view, three reasons that you will argue (ordered from strong to strongest), and some background, 2) Paragraph 2: argument in favor of point 1 (strong point), 3) Paragraph 3: argument in favor of point 2 (stronger point), 4) Paragraph 4: argument in favor of point 3 (strongest point), and 5) Paragraph 5: summary of argument (powerful restatement of first paragraph).

Solving Differential Equations using Laplace Transform

a) y" - y' -2y = 0

y(0) = 1, y'(0) = 0

answer: y = 1/3e^2t + 2/3e^-t

b) y" + y = sin2t

y(0) = 2, y'(0) = 1

answer: y(t) = 2cost + 5/3 sint - 1/3sin2t

c) y^4 - y = 0

y(0) = 0, y'(0) = 1, y"(0) = 0, y'''(0) = 0

answer y(t) = (sinht + sint)/2

0. 1. There are 3 machine operators in a manufacturing factory. Every day, each operator works for a single shift of 7.5 hours. The factory operates 5 days a week.
1. Last month, in the first week (Week 1), the factory arranged overtime of 1 hours on 4 days for 2 machine operators. What is the utilization of operators in Week 1?
2. Because of the overtime in Week 1, there was no more overtime in Week 2. One of the operators even idled for 3 hours in 1 workday without anything to do. What is the utilization of operators in Week 2?

Assume that you have a sample of

n 1 equals 8n1=8​,

with the sample mean

Upper X overbar 1 equals 48X1=48​,

and a sample standard deviation of

Upper S 1 equals 4 commaS1=4,

and you have an independent sample of

n 2 equals 12n2=12

from another population with a sample mean of

Upper X overbar 2 equals 35X2=35

and the sample standard deviation

Upper S 2 equals 7.S2=7.

Complete parts​ (a) through​ (d) below.

What is the value of the​ pooled-variance t Subscript STATtSTAT test statistic for testing Upper H 0 : mu 1 equals mu 2H0: μ1=μ2​?, In finding the critical​ value, how many degrees of freedom are​ there?, Using a significance level of alpha α equals=0.250.25​, what is the critical value for a​ one-tail test of the hypothesis, Upper H 0 : mu 1 less than or equals mu 2H0: μ1≤ μ2 against the alternative Upper H 1 : mu 1 greater than mu 2 question mark, What is your statistical​ decision?

Python query for below:

There are different ways of representing a number. Python’s function isdigit() checks whether the input string is a positive integer and returns True if it is, and False otherwise. You are to make a more generalised version of this function called isnumeric().

Just like isdigit(), this function will take input as a string and not only return a Boolean True or False depending on whether the string can be treated like a float or not, but will also return its float representation up to four decimal places if it is True.

Remember that numbers can be represented as fractions, negative integers, and float only. Check the sample test cases to understand this better.

Input: One line of string. The string will contain alphabets, numbers and symbols: '/' '.' '^'

Output: One line with True/False and then a space and the number with 4 decimal places if it is true and ‘nan’ if it is false

Sample Input 1: .2
Sample Output 1:
True 0.2000

Sample Input 2: 1 /. 2
Sample Output 2:
True 5.0000

Sample Input 3: 3^1.3
Sample Output 3:
True 4.1712

Sample Input 4: 3/2^3
Sample Output 4:
False NaN
Explanation:
if '^' and '/' are both present then give False. Since it is ambiguous, 2^5/5 can be seen as 2^(5/5) or (2^5)/5 likewise 3/2^3 can be seen as 3/(2^3) or (3/2)^3

Sample Input 5: 1.2.3
Sample Output 5:
False NaN

Sample Input 6: -2.
Sample Output 6:
True -2.0000

QUESTION 4 CVP Analysis

Guide to marks: 20 marks – 4 for a, 4 for b, 4 for c, 8 for d
Show all calculations to support your answers.

A manufacturer can make two products, A and B. The following data are available:B

(a)Calculate the unit contribution margin for each product.
(b)This month the manufacturer will specialise in making only Product B. How many does he need to sell to break even?
(c)If they specialise in making only A what is the breakeven sales volume for the month in sales dollars?
(d)He now decides to manufacture both A and B this month in the ratio of 3 of A to 1 of B.
(i)How many of each product must be sold to earn a profit of $3,500 before tax for the month?
(ii)How many of each product must be sold to earn a profit of $8,400 after tax (of 30c in the dollar) for the month?

PLEASE USE THE ECLIPSE.

I want to make a program that shows whether the correct number is correct or incorrect.

Example: how much is 1+1?

option 1: 2

option 2: 3

option 3: 4

option 4: 5

option 5: 6

The answer is 1. because the answer is 2 and the option number is 1.

Write a Java application that simulates a test. The test contains at least five questions about first three lectures of this course. Each question should be a multiple-choice question with 4 options.

Design a Test class. Use programmer-defined methods to implement your solution. For example:

• create a method to simulate the questions – simulateQuestion
• create a method to check the answer – checkAnswer
• create a method to display a random message for the user – generateMessage
• create a method to interact with the user - inputAnswer

For each question:

• If the user finds the right answer, display a random congratulatory message (“Excellent!”,”Good!”,”Keep up the good work!”, or “Nice work!”).
• If the user responds incorrectly, display an appropriate message and the correct answer (“No. Please try again”, “Wrong. Try once more”, “Don't give up!”, “No. Keep trying..”).
• Use random-number generation to choose a number from 1 to 4 that will be used to select an appropriate response to each answer.
• Use a switch statement to issue the responses, as in the following code:

switch ( randomObject.nextInt( 4 ) )

{

case 0:

return( "Very good!" );

……

}

At the end of the test display the number of correct and incorrect answers, and the percentage of the correct answers.

Your main class will simply create a Test object and start the test by calling inputAnswer method.