Answer:
x=9
Step-by-step explanation:
So first subtract 8 on both Sides
3x+8-8=35-8
3x=27
Now divide 3 on both sides to isolate the variable x
x=9
So x=9
The answer is 12.6
419 is 420 because we are estimating so find 1% of 420 which is 4.2 then multiply 4.2×3 to get 12.6
(a^2+b)^2 - (a^2-b)^2, if a=4 b=1.
Answer:

Step-by-step explanation:
Newton's cooling model is:

Where
t is the time in hours
is the ambient temperature
is the initial temperature of the body

We know that:


Then after 7 hours the temperature of the liquid will be:


C. They are equal to each other I think