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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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A company is completing research and development for software which it is planning to produce in approximately 2 years time. Whi
likoan [24]

Answer:

The transistor density of the hardware which will exist in 2 years time will likely be double the current processing speeds.

Explanation:

The other 3 options are incorrect

7 0
3 years ago
To save a new copy of an existing database, a user can open the original database and select ________ from the file tab.
Yuri [45]
And select copy from the file tab.
6 0
3 years ago
A piece of glass has a thin film of gasoline floating on it. A beam of light is shining perpendicular on the film. If the wavele
kobusy [5.1K]

Answer:

200 nm

Explanation:

We need a constructive interference to see the bright reflection

we know that 2t=m\lambda  where m=1 and \lambda is the wavelength of the gasoline

so \lambda =\frac{560}{1.4}=400nm

putting the value of m and \lambda in thickness equation

t=\frac{1\times 400}{2}=200nm

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3 0
4 years ago
Write a SQL statement to display the WarehouseID, the sum of Quantity On Order, and the sum of QuantityOnHand, grouped by Wareho
mariarad [96]

Answer:

The corrected question is:

Write an SQL statement to display the WarehouseID, the sum of QuantityOnOrder and sum of QuantityOnHand, grouped by WarehouseID and QuantityOnOrder. Name the sum of QuantityOnOrder as TotalItemsOnOrder and the sum of QuantityOnHand as TotalItemsOnHand. Use only the INVENTORY table in your SQL statement.

Answer to this corrected question:

SELECT WarehouseID,

SUM(QuantityOnOrder) AS TotalItemsOnOrder,

SUM(QuantityOnHand) AS TotalItemsOnHand

FROM INVENTORY

GROUP BY WarehouseID, QuantityOnOrder;

According to the given question:

SELECT WarehouseID,

SUM(QuantityOnOrder) + SUM(QuantityOnHand) AS TotalItemsOnHand    

FROM INVENTORY

GROUP BY WarehouseID, QuantityOnOrder;

Explanation:

  • In the SQL statement SELECT statement is used to select the data from the table. Here the SELECT statement is used to select WarehouseID, Sum of the columns QuantityOnOrder and QuantityOnHand from INVENTORY table.
  • The sum of QuantityOnOrder and QuantityOnHand columns are given the name of TotalItemsonHand (In case of the corrected question the sum of column QuantityOnOrder is named as TotalItemsOnOrder and the column QuantityOnHand is named as TotalItemsOnHand ) using Alias AS. Alias is the temporary name given to the columns or table to make them  more readable.
  • GROUP BY statement is used to arrange or "group" same data and is often use with aggregate functions like SUM function here. So the grouping here is done based on two columns WarehouseID and QuantityOnOrder.
  • SUM function in this SQL statement is an aggregate function to calculate the sum of all value in the columns QuantityOnOrder and QuantityOnHand.
3 0
3 years ago
What are the three major functions of a game engine?
zzz [600]
Three major functions of a game engine would be Physics, Programming, and an audio engine should be some major functions of a game engine.
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3 years ago
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