Robert takes a roast out of the oven when the internal temperature of the roast is 165°f. after 15 minutes, the temperature of the roast drops to 135°f.

the temperature of the room is 70°f.

how long does it take for the temperature of the roast to drop to 110°f?

use the newton's law of cooling equation, t(t)=ta+(t0−ta)ekt .

enter your answer in the box. round your answer to the nearest minute.
me get to this answer?

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

The coordinates r(1, -3), s(3, -1) t(5, -7) form what type of polygon? a right triangle an acute triangle an equilateral triangle an obtuse triangle