Which of the following do you need to remeber about true/false questions?

What is the danger in judging someone according to his or her social networking profile

AfilCa [17]

They could find you and throw hands.

8 0

3 years ago

(1) Prompt the user for an automobile service. Output the user's input. (1 pt) Ex: Enter desired auto service: Oil change You en

Pavlova-9 [17]

Answer:

In Python:

#1

service = input("Enter desired auto service: ")

print("You entered: "+service)

#2

if service.lower() == "oil change":

print("Cost of oil change: $35")

elif service.lower() == "car wash":

print("Cost of car wash: $7")

elif service.lower() == "tire rotation":

print("Cost of tire rotation: $19")

else:

print("Invalid Service")

Explanation:

First, we prompt the user for the auto service

service = input("Enter desired auto service: ")

Next, we print the service entered

print("You entered: "+service)

Next, we check if the service entered is available (irrespective of the sentence case used for input). If yes, the cost of the service is printed.

This is achieved using the following if conditions

For Oil Change

if service.lower() == "oil change":

print("Cost of oil change: $35")

For Car wash

elif service.lower() == "car wash":

print("Cost of car wash: $7")

For Tire rotation

elif service.lower() == "tire rotation":

print("Cost of tire rotation: $19")

Any service different from the above three, is invalid

else:

print("Invalid Service")

6 0

3 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

For this problem, you will write a function standard_deviation that takes a list whose elements are numbers (they may be floats

Evgesh-ka [11]

Answer:

import math
def standard_deviation(aList):
sum = 0
for x in aList:
sum += x
mean = sum / float(len(aList))
sumDe = 0
for x in aList:
sumDe += (x - mean) * (x - mean)
variance = sumDe / float(len(aList))
SD = math.sqrt(variance)
return SD
print(standard_deviation([3,6, 7, 9, 12, 17]))

Explanation:

The solution code is written in Python 3.

Firstly, we need to import math module (Line 1).

Next, create a function standard_deviation that takes one input parameter, which is a list (Line 3). In the function, calculate the mean for the value in the input list (Line 4-8). Next, use the mean to calculate the variance (Line 10-15). Next, use sqrt method from math module to get the square root of variance and this will result in standard deviation (Line 16). At last, return the standard deviation (Line 18).

We can test the function using a sample list (Line 20) and we shall get 4.509249752822894

If we pass an empty list, a ZeroDivisionError exception will be raised.

3 0

3 years ago

Who could vote in the first democracy?

zmey [24]

B citizens

in the 4th century there were about 100k citizens. only about 40k could participate in the democratic process ( this is only if the question is referring to ancient democracy )

4 0

3 years ago