Newton's law of cooling states that the rate of change of temperature of an object in a surrounding medium (called the ambient temperature) is proportional to the difference between the temperature of the medium and the temperature of the object. suppose a metal bar, initially at temperature 40 degrees celsius, is placed in a room that is held at the constant temperature of 20 degrees celsius. one minute later, the bar has cooled to 22.71 degrees celsius. write the differential equation that models the temperature in the bar t (in degrees celsius) as a function of time t (in minutes).

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

no association

step-by-step explanation:

if you have eyes and you can use them efficiently you can see that it just looks like random dots like do a line of best fit and like they're so spread out it's such a weak association you might as well consider it nonexistent