Answer:
Step-by-step explanation:
If the liquid is cooling at a constant rate, then the equation for this is linear. We can use the info given to find the linear equation for this situation. We have 2 points: (2, 178) and (5, 154), where the x coordinate represents the time in minutes, and y represents the temperature. We use these values in the slope formula:
![m=\frac{154-178}{5-2}=-\frac{24}{3}=-8](https://tex.z-dn.net/?f=m%3D%5Cfrac%7B154-178%7D%7B5-2%7D%3D-%5Cfrac%7B24%7D%7B3%7D%3D-8)
Now we will use one of the points to finish writing the equation. I chose (2, 178), but it doesn't matter which one you choose; they will both give you the same equation in the end.
y - 178 = -8(x - 2) and
y - 178 = -8x + 16 so
y = -8x + 196
If we are looking for the temp when the liquid starting cooling, then we are looking for the temp at time 0, or when x = 0 (sincce x is our time).
y = -8(0) + 196 so
y = 196
That's the temp of the liquid before it started any cooling.
Answer
q = 13/2 or other forms are q = 6 1/2, q = 6.5
Step-by-step explanation:
Answer:
18.75
Step-by-step explanation:
just divide 3000 by 160 which is 18.75.
The answer is C 50 people because if you multiply the 40 percent by 2 you get 40 people then you can divide the 40 percent and add it to the 80 percent to get 50 ( ik it’s a lot)
Is it 0.5? if so, the answer is 0.25%
if it is supposed to be just a 5 then the answer would be 2.5%