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melomori [17]
2 years ago
13

There are two algorithms called Alg1 and Alg2 for a problem of size n. Alg1 runs in n2 microseconds and Alg2 runs in 100n log n

microseconds. Alg1 can be implemented using 4 hours of programmer time and needs 2 minutes of CPU time. On the other hand, Alg2 requires 15 hours of programmer time and 6 minutes of CPU time.
1. If programmers are paid 20 dollars per hour and CPU time costs 50 dollars per minute, how many times must a problem instance of size 500 be solved using Alg2 in order to justify its development cost?

Computers and Technology
1 answer:
nataly862011 [7]2 years ago
8 0

The answer & explanation for this question is given in the attachment below.

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Write a program that calculates an adult's fat-burning heart rate, which is 70% of 220 minus the person's age. Complete fat_burn
Brut [27]

Answer:

def get_age():

age = int(input())

if(age>=18 and age<=75):

return age

else:

raise ValueError("Invalid age.")

def fat_burning_heart_rate(age):

return ((70 / 100) * (220 - age))

if __name__ == '__main__':

try:

age = get_age()

print("Fat burning heart rate for a",age,"year-old:",fat_burning_heart_rate(age),"bpm")

except ValueError as ve:

print(ve.args[0])

print("Could not calculate heart rate info.")

Explanation:

def get_age():

age = int(input())

if(age>=18 and age<=75):

return age

else:

raise ValueError("Invalid age.")

def fat_burning_heart_rate(age):

return ((70 / 100) * (220 - age))

if __name__ == '__main__':

try:

age = get_age()

print("Fat burning heart rate for a",age,"year-old:",fat_burning_heart_rate(age),"bpm")

except ValueError as ve:

print(ve.args[0])

print("Could not calculate heart rate info.")

The above program performs an operation to determine the percentage of fat burning rate.

It takes the value of the ages of some adult as input, performs a series of conditional statement function on them. Before given an output .

Kindly check attachment for output

8 0
2 years ago
Use the single-server drive-up bank teller operation referred to in Problems 1 and 2 to determine the following operating charac
elena-s [515]

Answer:

This question is incomplete, here's the complete question:

1. Willow Brook National Bank operates a drive-up teller window that allows customers to complete bank transactions without getting out of their cars. On weekday mornings, arrivals to the drive-up teller window occur at random, with an arrival rate of 24 customers per hour or 0.4 customers per minute. 3. Use the single-server drive-up bank teller operation referred to in Problems 1 to determine the following operating characteristics for the system: a.) The probability that no customers are in the system. b.) The average number of customers waiting. c.) The average number of customers in the system. d.) The average time a customer spends waiting. e.) The average time a customer spends in the system. f.) The probability that arriving customers will have to wait for service.

Explanation:

Arrival rate \lambda = 24 customers per hour or 0.4 customers per minute

Service rate \mu​ = 36 customers per hour or 0.6 customers per minute (from problem 1)

a.) The probability that no customers are in the system , P0 = 1 - \lambda / \mu

= 1 - (24/36) = 1/3 = 0.3333

b.) The average number of customers waiting

Lq = \lambda^2 / [\mu(\mu - \lambda)] = 242 / [36 * (36 - 24)] = 1.33

c.) The average number of customers in the system.

L = Lq + \lambda / \mu = 1.33 + (24/36) = 2

d.) The average time a customer spends waiting.

Wq = \lambda / [\mu(\mu - \lambda)] = 24 / [36 * (36 - 24)] = 0.0555 hr = 3.33 min

e.) The average time a customer spends in the system

W = Wq + 1/\mu = 0.0555 + (1/36) = 0.0833 hr = 5 min

f.) The probability that arriving customers will have to wait for service.

= 1 - P0 = 1 - 0.3333 = 0.6667

3 0
2 years ago
Arrays are described as immutable because they are two dimensional. are arranged sequentially. can be reordered. cannot be chang
Vlada [557]

Answer:

Arrays are described as immutable because they cannot be changed once they are defined.  (D on Edge)

Explanation:

It's in the notes and I just took the test (2020)

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A wand tool is to do that in an editing software.

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