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xenn [34]
3 years ago
5

A restaurant recorded the ages of customers on two separate days. You are going to write a program to compare the number of cust

omers in their twenties (ages 20 to 29). What is the missing line of code to count the number of customers in their twenties? customerAges = [13, 3, 11, 24, 35, 25, 15, 18, 1] count20s = 0 if 20 <= item <= 29: count20s = count20s + 1
Computers and Technology
1 answer:
nikklg [1K]3 years ago
4 0

Answer:

You will need to implement a for loop ( I am assuming this is java)

Explanation:

int count20s = 0;

for(int x =0; x< customerAges.length;x++){

if(20 <= customerAges[x] && customerAges[x] <= 29){

     count20s++;

}

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CHALLENGE ACTIVITY |
fredd [130]

Answer:

maxSum = FindMax(numA, numB) + FindMax(numY, numZ);  

The maxSum is a double type variable which is assigned the maximum of the two variables numA numB PLUS the maximum of the two variables numY numZ using FindMax function. The FindMax() method is called twice in this statement one time to find the maximum of numA and numB and one time to find the maximum of numY numZ. When the FindMax() method is called by passing numA and numB as parameters to this method, then method finds if the value of numA is greater than that of numB or vice versa. When the FindMax() method is called by passing numY and numZ as parameters to this method, then method finds if the value of numY is greater than that of numZ or vice versa. The PLUS sign between the two method calls means that the resultant values returned by the FindMax() for both the calls are added and the result of addition is assigned to maxSum.

Explanation:

This is where the statement will fit in the program.

#include <iostream>

using namespace std;

double FindMax(double num1, double num2) {

  double maxVal = 0.0;    

  if (num1 > num2) { // if num1 is greater than num2,

     maxVal = num1;  // then num1 is the maxVal.    }

  else {          

     maxVal = num2;  // num2 is the maxVal.   }

  return maxVal; }  

int main() {

  double numA;

  double numB;

  double numY;

  double numZ;

  double maxSum = 0.0;  

maxSum = FindMax(numA, numB) + FindMax(numY, numZ);  

  cout << "maxSum is: " << maxSum << endl;   }

Lets take an example to explain this. Lets assign values to the variables.

numA = 6.0

numB = 3.0

numY = 4.0

numZ = 9.0

maxSum =0.0

maxSum = FindMax(numA, numB) + FindMax(numY, numZ);  

FindMax(numA,numB) method call checks if numA>numB or numB>numA and returns the maximum of the two. Here numA>numB because 6.0 is greater than 3.0. So the method returns numA i.e. 6.0

FindMax(numY, numZ) method call checks if numY>numZ or numZ>numY and returns the maximum of the two. Here numZ>numY because 9.0 is greater than 4.0. So the method returns numZ i.e. 9.0

FindMax(numA, numB) + FindMax(numY, numZ) this adds the two values returned by the method FindMax for each call.

FindMax returned maxVal from numA and numB values which is numA i.e. 6.0.

FindMax returned maxVal from numY and numZ values which is numZ i.e. 9.0.

Adding these two values 9.0 + 6.0 = 15

So the complete statement  FindMax(numA, numB) + FindMax(numY, numZ) gives 15.0  as a result.

This result is assigned to maxSum. Hence

maxSum = 15

To see the output on the screen you can use the print statement as:

cout<<maxSum;

This will display 15

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3 years ago
10) What is the BEST way to rewrite sentence (1) to make it more
givi [52]
I believe the answer is D. It makes more sense and is the most correct grammatically.

Hope this helped and pls mark as brainliest!

~ Luna
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3 years ago
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How will you apply the different wiring devices according to its main purposes and functions?
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Answer:Wiring devices are current-carrying electrical or electronic products that serve primarily as a connection or control point for electrical circuits within a range of 0–400 amperes, 0–600 volts (AC and DC), and AC/DC (660 watts, 1,000 volts AC fluorescent) as well as certain non-current-carrying wiring devices and supplies.

Wiring devices include:

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Connector bodies and flanged outlets

Cover plates

General-use switches and dimmers

Lampholders (incandescent, fluorescent, cold cathode, neon, quartz lamps, and others)

Lighting control devices

Motion sensing and timer switches

Receptacles

Switch, outlet, FM/TV, blank, and telephone plates

Undercarpet premise wiring systems

Products include receptacle-type arc-fault circuit interrupters (AFCIs), protection devices that can detect an unintended electrical arc and disconnect the power before the arc starts a fire. AFCI technology in residential and commercial buildings is an important electrical safety device.

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