Answer:13hrs
Step-by-step explanation:
Initial Temperature = 21°c
final temperature = -18°c
rate of decrease = 3°c/hr
for every hour the temperature decreases by 3°c.
What time does it take to get to 0c = . 21(°c) / 3(°c/hr) = . 7hr
what time does it take to get to -18c = 18(°c) / 3(°c/hr) = . 6hr
Total Time taken = . 7hr + 6hr = 13hr
Alternative solution
Initial Temperature = 21°c
final temperature = -18°c
rate of decrease = 3°c/hr
(21 + 18)°c/ 3(°c/hr) . = . 13hr
I really don't understand what your saying but.....
1/3 = 0.3333333...... and 3/4 = 0.75 = 75%
Hope this helps:)
Answer:
Step-by-step explanation:
It will never be positive becasue there is a negitive sign in the equation. negitives overule positives. Therefor it will never be positive.
25 students attended the play, $4 per student with a total of $100, 100 / 4 = 25
5 inches into centimeters is 12.7 because 2.54 cm is in an inch so multiple 2.54 by 5 and get 12.7