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lys-0071 [83]
2 years ago
15

Fiona is drawing polygons on a computer. She wants to map a regular 9-sided polygon back onto itself using a reflection. Which s

et of lines can Fiona choose from for her line of reflection?. A) any line passing through the center of the polygon
B) any perpendicular bisector of one of the sides

C) any line joining the midpoints of any two sides

D) any line parallel to a side of the polygon
Computers and Technology
2 answers:
Airida [17]2 years ago
8 0
The set of lines that Fiona can choose from for her line of reflection is B) any perpendicular bisector of one of the sides. 
Rus_ich [418]2 years ago
4 0
The answer is "<span>B) any perpendicular bisector of one of the sides".
</span>
We can define a line of reflection as the line in which a shape is reflected, or we can say that it is the mirror in which the shape is reflected. The line of reflection is the perpendicular bisector of any pair of corresponding points. If you want to join sets of corresponding points on the object and image, then the line of reflection will slice the lines framed down the middle.
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5.19 LAB: Exact change - functions
matrenka [14]

Answer:

def exact_change(user_total):

    if user_total <=0:

         print("No change")

    else:

         num_dollars = int(user_total/100)

         user_total = user_total % 100

         num_quarters= int(user_total/25)

         user_total = user_total % 25

         num_dimes= int(user_total/10)

         user_total = user_total % 10

         num_nickels= int(user_total/5)

         num_pennies= user_total % 5

         if num_dollars >= 1:

              if num_dollars == 1:

                   print(str(num_dollars)+" num_dollars")

              else:

                   print(str(num_dollars)+" amountdollars")

         if num_quarters>= 1:

              if num_quarters== 1:

                   print(str(num_quarters)+" quarter")

              else:

                   print(str(num_quarters)+" quarters")

         if num_dimes>= 1:

              if num_dimes== 1:

                   print(str(num_dimes)+" dime")

              else:

                   print(str(num_dimes)+" dimes")

         if num_nickels>= 1:

              if num_nickels== 1:

                   print(str(num_nickels)+" nickel")

              else:

                   print(str(num_nickels)+" nickels")

         if num_pennies>= 1:

              if num_pennies== 1:

                   print(str(num_pennies)+" penny")

              else:

                   print(str(num_pennies)+" pennies")

           

user_total = int(input("Enter user_total Here:  "))

exact_change(user_total)

Explanation:

The explanation is long. So, I added it as an attachment.

Download txt
6 0
2 years ago
Read 2 more answers
(1) Output a menu of automotive services and the corresponding cost of each service. (2 pts) Ex: Davy's auto shop services Oil c
Wittaler [7]

Answer:

service1_cost = 0

service2_cost = 0

print("Davy's auto shop services")

print("Oil change -- $35, Tire rotation -- $19, Car wash -- $7, Car wax -- $12")

service1 = input("Select first service: ")

service2 = input("Select second service: ")

if service1 == "Oil change":

   service1_cost = 35

elif service1 == "Tire rotation":

   service1_cost = 19

elif service1 == "Car wash":

   service1_cost = 7

elif service1 == "Car wax":

   service1_cost = 12

elif service1 == "-":

   service1 = "No service"

   service1_cost = 0

if service2 == "Oil change":

   service2_cost = 35

elif service2 == "Tire rotation":

   service2_cost = 19

elif service2 == "Car wash":

   service2_cost = 7

elif service2 == "Car wax":

   service2_cost = 12

elif service2 == "-":

   service2 = "No service"

   service2_cost = 0

print("- - -")

print("Davy's auto shop invoice")

print("Service 1: " + service1 + " costs $" + str(service1_cost))

print("Service 2: " + service2)

print("Total: $" + str(service1_cost + service2_cost))

Explanation:

- Initialize the variables for cost values

- Ask the user for the services

- Depending on the user choice, calculate the cost of each service using if else structure

- Print the chosen services, cost of each service and total cost    

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2 years ago
The piston engine uses the ________ to convert the reciprocating motion of the piston into rotary motion.
PSYCHO15rus [73]

The piston engine uses the crankshaft to convert the reciprocating motion of the piston into rotary motion.

<span>The crankshaft is used to convert reciprocating motion of the piston into rotary motion, while the conversion process is called torque, which is a twisting force. Aside from crankshaft, there are a total of four parts of the engine that work together in order to convert the reciprocating motion into rotary motion namely cylinder, or also called the chamber of the piston, the piston itself, and the connecting rod.</span>

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2 years ago
Which task can a company perform with intranets?
gregori [183]
I would probably say C, Though you might want a second, person to clarify. But My answer is C..
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2 years ago
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Donna often travels around the world. When she travels, she needs to access her emails from different locations. However, to kee
juin [17]

The answer is B: Yahoo! mail

Donna is able to install Yahoo! mail as an app on her portable devices like phones and tablets and be able to organize her Google mails, Outlook, and yahoo accounts. The beauty of it is that you are able to sign in with any account (non-Yahoo emails). anywhere and at any time. It also provides 1000 GB of free secure cloud storage.



6 0
2 years ago
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