Answer: It will take 3.75 hours to reach 20°C.
Solution:
The bottle temperature begins at the freezer temperature of –16° C
How many hours will it take to reach 20° C?
Change in temperature=20°C – (–16°C)
Change in temperature=20°C+16°C
Change in temperature=36°C
The bottle temperature will go up a steady 9.6° C every hour. Using a rule of three:
9.6°C → 1 hour
36°C → x
x=(36°C)(1 hour)/(9.6°C)
x=3.75 hours
Answer: It will take 3.75 hours to reach 20°C.
Ok so what I am seeing is Y=-4x+2 which equals Y=6x-8. So what I would do is combine the two problems so you would get 2Y=2X-6. Now divide everything by 2, so Y=X-3.
Answer:
x and y = (2,-1)
Step-by-step explanation:
3x + 5y = -11
3x = -1 - 7y
-(-1 - 7y) + 5y = -11
y = -1
3x=-1-7x(-1)
x = 2
(x,y) = (2,-1)
-3x2+5x(-1) = -11
3x2+7x (-1) = -1
-11 = -11
-1 = -1
solution
x and y = (2,-1)
Answer:
1/12
Step-by-step explanation:
Answer:
-5
Step-by-step explanation:
12+18y-7y+35=-8
11y+47=-8
11y=-55
y=-5
