Answer:
Step-by-step explanation:
The rate of change in the temperature T of coffee at time t is written as 
(remember derivatives are used to express rates of change, and in our case the rate of change of the temperature T). The difference between the temperature M of the air at time t, and the temperature T of the coffee at time t can be expressed as 
Saying that the rate of change in the temperature T is proportional to the difference between M and T is just a way of saying that the rate of change in the temperature T is equal to the difference between M and T, multiplied by some constant k (whose value we don't know, but still that's what it means).
Therefore we get
Simplify 3x - 5 + 12x - 4x + 14 to 11x + 9
11x + 9 = 86
Subtract 9 from both sides
11x = 86 - 9
Simplify 86 - 9 to 77
11x = 77
Divide both sides by 11
x = 77/11
Simplify 77/11 to 7
<u>x = 7</u>
For 14/28 is simplest form would be 1/2 and 8/28 in simplest form would be 2/7. I hope this helps. ^^
Answer:
27.5 inches.
Step-by-step explanation:
Since the wooden frame is of rectangular shape as shown below:
The length of the diagonal is AC.
Now, find AC by applying Pythagoras theory in triangle ABC
