Fatima has 3 packs of batteries. Each pack contains 4 batteries. She gives her brother 8 batteries to put in his toy robot. Let b represent the number of batteries Fatima has left. Which equation could be used to find the value of b?

Answer: See explanation

Explanation:

Let b represent the number of batteries Fatima has left.

The equation that can be used to find the value of b goes thus:

(3 × 4) = b + 8

12 = b + 8

b = 12 - 8

Therefore, based on the above equation, the number of batteries that Fatima has left will be 4.

An array is mirrored if one half of the array is a reflection of the other. For example, these are mirrored arrays:

int[] a = {5, 4, 3, 4, 5};
int[] b = {9, 2, 2, 9};

The intent of the following methods is to determine whether an array is mirrored or not.

public boolean isMirrored(int[] array) {
// Add code here
}

private boolean isMirrored(int[] array, int leftIndex, int rightIndex) {
if (leftIndex > rightIndex) return true;
if (array[leftIndex] != array[rightIndex]) return false;
return isMirrored(array, leftIndex + 1, rightIndex - 1);
}

Which of the following statements, when inserted at the comment, “Add code here”, would complete the first isMirrored() method, call the second isMirrored() method, and produce the correct results?
A. return isMirrored(array)
B. return isMirrored(array, 0, 0)
C. return isMirrored(array, 0, array.length - 1);
D. return isMirrored(array, array[leftIndex], array[rightIndex]);


Which of the following is a method of the File class that can return an array of Files in a directory?
A. listFiles()
B. files()
C. getFiles()
D. directory()



Consider the following code.

public static int fileMethod(File dir) {
File[] files = dir.listFiles();
if (files == null) return 0;

int count = 0;
for (File f : files) {
if (f.isFile()) count++;
else count += fileMethod(f);
}
return count;
}

If dir represents a starting directory, which of the following statements best describes the operation of fileMethod()?
A. It counts and returns the number of files and directories inside dir and all subdirectories of dir.
B. It counts and returns the number of files, not counting directories, inside dir and all subdirectories of dir.
C. It counts and returns the number of files and directories only inside dir and inside only the first subdirectory found inside dir.
D. It counts and returns the number of files, not counting directories, but only those found inside dir and not its subdirectories.



Which of the following methods will correctly calculate the factorial of a positive number using iteration?
A.
public static long factorial(int n) {
if (n == 0) return 1;
else return n * factorial(n);
}
B.
public static long factorial(int n) {
if (n == 0) return 1;
else return n * factorial(n - 1);
}
C.
public static long factorial(int n) {
int product = n;
while (n > 0) {
n--;
product *= n;
}
return product;
}
D.
public static long factorial(int n) {
int product = n;
while (n > 1) {
n--;
product *= n;
}
return product;
}

Consider the following code.

public static String display(String s, int c) {
if (c == 0) return s;
else {
if (c > 3) return "-" + display(s, c - 1) + "-";
else return "=" + display(s, c - 1) + "=";
}
}

Which of the following methods most accurately reproduces the behavior of the display() method without using recursion?
A.
public static String d1(String s, int c) {
String retVal = "";
for (int i = 0; i < c; i++) {
if (i > 3) retVal += "-" + s + "-";
else retVal += "=" + s + "=";
}
return retVal;
}
B.
public static String d2(String s, int c) {
String retVal = "";
for (int i = 0; i < c - 3; i++) {
retVal += "-";
}
for (int i = 0; i < Math.min(3,c); i++) {
retVal += "=";
}
retVal += s;
for (int i = 0; i < Math.min(3,c); i++) {
retVal += "=";
}
for (int i = 0; i < c - 3; i++) {
retVal += "-";
}
return retVal;
}
C.
public static String d3(String s, int c) {
String retVal = "";
for (int j = 0; j < c - 3; j++) {
retVal += "-";
}
for (int j = 0; j < 3; j++) {
retVal += "=" + s + "=";
}
for (int j = 0; j < c - 3; j++) {
retVal += "-";
}
return retVal;
}
D.
public static String d4(String s, int c) {
String retVal = "";
for (int i = 0; i < c; i++) {
for (int j = 0; j < c - 3; j++) {
retVal += "-";
}
retVal += "===" + s + "===";
for (int j = 0; j < c - 3; j++) {
retVal += "-";
}
}
return retVal;
}

write examples of hacking in internet?​

You defined a class as follows.

def __init__(self, style, color):
self.style = style
self.color = color
This portion is the _____.


creator

instantiator

constructor

initiator

pls help!! which of the following is not a step required to view a web page?

Engineers at Edison Laboratories developed a _____ strip that allowed them to capture sequences of images on film.


kinetoscope

selenium

cotton

celluloid

adassadad saflalfaklfajfklajfalkfjalkfjalkfalkf

does anyone know what's wrong with this code

A small computer on a smart card has 4 page frames. At the first clock tick, the R bits are 1000 (page 0 is 1 and the rest are 0). At subsequent ticks, the values are 0110, 0101, 1010, 1101, 0101, 0011, and 1100. If the aging algorithm is used with a 16-bit counter, give the values of the four counters after the last tick. If page fault occurs, which page should be swapped out

Rachel selected a part of her audio file in the audio editing software and increased its decibel value. Which audio editing effect has Rachel used here?
A.
fade out
B.
normalize
C.
noise Reduction
D.
amplify
E.
compressor

select all the correct answers
which two programming languages are most commonly used to write web based software programs?
1. Python
2. C
3. PHP
3. Ada

what os the full form of cpu​

What browser do you use?
Brave
Chrome
Firefox
Opera
Edge
Tor


​

If you ship bakudeku. I swear.
*RANTS*

A chain of coffee servers is sending a spreadsheet of projected costs and profits to some of its investors. When, Kyle, the administrator making the spreadsheet, adds an image of his company’s logo, he realizes it would fit and look best if turned to read sideways.

How can Kyle change the image to make it fit in such a way?

He can select the image and hold down on the green handle above it while sliding the mouse.
He can select the image and hold down Control while sliding the scroll bar to the right.
He can press the PivotTable button and select “Rotate 90 degrees” and then click OK.
He can click on the Pictures Tool tab and select press Artistic Effects to access the rotate option

You have created a group policy that prevents users in the accounting department from accessing records in a database that has confidential information. The group policy is configured to disable the search function for all users in the Accounting OU no matter which workstation is being used. After you configure and test the policy, you learn that several people in the Accounting OU have valid reasons for using the search function. These users are part of a security group named Managers. What can you do to prevent the Group Policy object (GPO) that you have configured from applying to members of the Managers group

select the correct answer
which sentence correctly describes a low-level language?
A. programs are written in source code
B. programs are written in hexadecimal or binary code
C. programs are translated to machine code by a complier
D. programs can be easily written and debugged

Which file type is best for saving line art and animated images?

DOC
GIF
JPG
MP3

What defines employability

PLEASE HELP ME!!! Please don't answer if you're just going to guess.

In this line from a data file, what do you call the comma?
dog, 23, 15
The comma is _____
-Choices-
a BOL set of characters,
an EOL set of characters,
a delimiter.

What is the name of the User-defined function that is mentioned in the code?

1. why is manufacturing considered the biggest contributor to progress

Construct :
4 input NOR Gate Truth Table.

The _____________ command is used to stop the FOR...NEXT loop prematurely.​

HELPPPP KOKICHI IS OUT TO KILL ME

Need answer ASAP!!!!!

Select the correct answer.
What stage of software development incorporates planning to help make changes in the project plan based on reviews?
OA.project startup
OB. proposal stage
OC. periodic checks
OD. product delivery

…..is the smallest size in audio files

Match the network topology to its description. 1. bus data is certain to reach its destination 2. mesh no danger of data collision with this topology 3. ring limited expansion capability 4. star nodes are connected to a central hub

what is the most popular monitor​

PLZ HELP FAST
The third party which is authorized to make a final decision in a dispute is called the ______.
a.
Mediator
b.
Arbiter
c.
Supervisor
d.
Manager


Please select the best answer from the choices provided

A
B
C
D

You are planning a storage solution for a new Windows server. The server will be used for file and print services and as a database server. The new server has five hard disks, all with equal capacity. Your storage solution should meet the following requirements: System files should be on a volume separate from data files. All volumes should be protected so that the server can continue to run in the event of a failure of one of the disks. The data volume should be optimized for improved disk access times. You will use Windows Disk Management to create and manage the volumes. What should you do