Answer:
multiply all off that and get your andser
Answer:
29.6666666667
Step-by-step explanation:
Calculator
Answer:
21.68 minutes ≈ 21.7 minutes
Step-by-step explanation:
Given:

Initial temperature
T = 100°C
Final temperature = 60°C
Temperature after (t = 3 minutes) = 90°C
Now,
using the given equation

at T = 90°C and t = 3 minutes


or

taking the natural log both sides, we get
3k = 
or
3k = -0.2876
or
k = -0.09589
Therefore,
substituting k in 1 for time at temperature, T = 65°C

or

or

or

taking the natural log both the sides, we get
( -0.09589)t = ln(0.125)
or
( -0.09589)t = -2.0794
or
t = 21.68 minutes ≈ 21.7 minutes
Answer:
yes
Step-by-step explanation:
To determine if (- 8, - 7 ) is a solution to the equation
Substitute the values of x and y into the equation and if both sides are equal then it is a solution.
left side : 3(- 8) + 10 = - 24 + 10 = - 14
right side : 2y = 2(- 7) = - 14
Since both sides are - 14 then (- 8, - 7 ) is a solution to the equation.