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Leona [35]
2 years ago
7

The Spinning Jenny reduced the number of workers necessary to _______. a.remove cotton seeds from fibers b.pump water from the m

ine c.plant seeds in a field d.turn yarn into cloth
Computers and Technology
1 answer:
bazaltina [42]2 years ago
5 0

The answer is D: Turn yarn into cloth.

During the industrial revolution, a number of new inventions in the textile industry greatly impacted this industry. However, it was the invention of the Spinning Jenny that is credited a lot. It helped move the textile industry from homes to factories and made wool spinning easier and faster. This invention, however, impacted the labor workforce. It reduced the amount of work needed to produce yarn. One worker was able to work 8 or more spools at once and rose to 120 due to technological advancements.

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Alina [70]
ITS TRUE!!I SEARCHED IT
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1 year ago
Consider the following method, which is intended to return an array of integers that contains the elements of the parameter arr
Gennadij [26K]

Code:

public static int[] reverse(int [] arr){

Int [] newArr = new int[arr.length];

for (int k = 0; k<arr.length;k++){

/*Missing statement */

}

return newArr;

Answer:

Replace the comment with:

newArr[k] = arr[arr.length-k];

Explanation:

Required

Complete the code

In the given code:

The first line of the given code defines the method

public static int[] reverse(int [] arr){

The next line declares array newArr withe same length as array arr

Int [] newArr = new int[arr.length];

The next line iterates through the elements of array arr

for (int k = 0; k<arr.length;k++){

The /* Missing statement */ is then replaced with:

newArr[k] = arr[arr.length-k];

The above statement gets the elements of array arr in reversed order.

This is so because, as the iteration iterates through array arr in ascending order, arr.length-k gets the element in reversed order

6 0
2 years ago
Select the correct text in the passage.
sergejj [24]

Answer:

2. Scientists use seismometers to measure the earthquake activity that occurs beneath a volcano. They then predict the eruption of that volcano.

Explanation:

The options are:

1. Before a volcano erupts, earthquake activity beneath the volcano decreases.2. Scientists use seismometers to measure the earthquake activity that occurs beneath a volcano. They then predict the eruption of that volcano.3. When a volcano erupts, the amount of carbon dioxide and sulfur dioxide emitted decreases. 4.Scientists measure the amount of these gases to determine the amount of magma present in the volcanic reservoir.

The answer is certainly 2. as seismometers are being used to find out the details of the earthquake activities which occur inside a volcano. And with this information, the volcanologists then predict the eruption of that particular volcano. Hence, the 2nd option does not have any factual errors, and all the others have factual errors.

5 0
2 years ago
Multiply each element in origList with the corresponding value in offsetAmount. Print each product followed by a semicolon (no s
Pavlova-9 [17]

Answer:

Replace /* Your code goes here */  with

for(i =0; i<NUM_VALS; i++) {

    printf("%d", origList[i]*offsetAmount[i]);

printf(";");

}

Explanation:

The first line is an iteration statement iterates from 0 till the last element in origList and offsetAmount

for(i =0; i<NUM_VALS; i++) {

This line calculates and print the product of element in origList and its corresponding element in offsetAmount

    printf("%d", origList[i]*offsetAmount[i]);

This line prints a semicolon after the product has been calculated and printed

printf(";");

Iteration ends here

}

5 0
2 years ago
Output each floating-point value with two digits after the decimal point, which can be achieved as follows:
sdas [7]

Answer:

The modified program in Python is as follows:

import math

paint_colors = {'red': 35,'blue': 25,'green': 23}

wall_height = int(input('Enter wall height (feet):\n'))

wall_width = int(input('Enter wall width (feet):\n'))

area = wall_height*wall_width

print('Wall area:',area,'square feet')

paint_needed = area/350.0

print('Paint needed: {:.2f} gallons'.format(paint_needed))

print('Cans needed:',round(paint_needed),'can(s)')

color = input("Choose a color to paint the wall: ")

print("Cost of purchasing", color, "paint: $",paint_colors[color])

Explanation:

The italicized are given from the question [unchanged]

<em>import math</em>

<em> paint_colors = {'red': 35,'blue': 25,'green': 23} </em>

<em>wall_height = int(input('Enter wall height (feet):\n')) </em>

This gets input for width

wall_width = int(input('Enter wall width (feet):\n'))

Calculate the wall area

area = wall_height*wall_width

Print the calculated wall area

print('Wall area:',area,'square feet')

Calculate the amount of paint needed

paint_needed = area/350.0

Print the amount of paint needed to 2 decimal places

print('Paint needed: {:.2f} gallons'.format(paint_needed))

Print the amount of can needed to nearest integer

print('Cans needed:',round(paint_needed),'can(s)')

Prompt user for color of paint [here, we assume the user input is correct]

color = input("Choose a color to paint the wall: ")

Prints the corresponding amount for the color

print("Cost of purchasing", color, "paint: $",paint_colors[color])

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1 year ago
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