my college hive icon mycollegehive
Groups
My College Hive notifiction icon Questions
Connect / Friends
Tags
Quiz
Books
Liquid going through a cooling system is chilled so that its...
PSAT PSAT-math-test math
up
0
down

Liquid going through a cooling system is chilled so that its temperature decreases at a constant rate from 100°C to 25°C in 5 seconds. Which of the following functions represents the temperature C, in degrees Celsius, as a function of the time t, in seconds, after chilling began, for 0 ≤ t ≤ 5 ?

A) C = −25 + 15t

B) C = 25 − 15t

C) C = 25 + 15t

D) C = 100 − 15t

72 views
Share Follow
adeb
Asked by adebrep:453
School not set Nigeria
06 January 2021

Comments





1 answer(s)

Advertisement (continue below)

judziy
Judziy answeredrep:1.9K
University of Benin Nigeria
06 January 2021
up
0
down

Since the initial temperature of the liquid is 100°C and the initial time is at t = 0

Substituting t = 0 into the equation in choice D:

C = 100 − 15t

C = 100 - 15(0)

C = 100

Thus, only choice D has an initial temperature of 100 (at t = 0)

Answer: C

Share
Comments




Advertisement (continue below)


Groups

Advertisement (continue below)

Your Answer

How to insert math formulas/equations

my college hive loader icon



Related Tags

PSAT

2 followers

94 questions

PSAT-math-test

3 followers

94 questions

math

17 followers

1261 questions