Answer:
y= -31
Step-by-step explanation:
8.5(-4)= -34
-34+3= -31
Answer:
Step-by-step explanation:
The desired formula parameters for Newton's Law of Cooling can be found from the given data. Then the completed formula can be used to find the temperature at the specified time.
__
<h3>Given:</h3>

<h3>Find:</h3>
k
T(4)
<h3>Solution:</h3>
Filling in the given numbers, we have ...
185 = 68 +(208 -68)e^(-k·3)
117/140 = e^(-3k) . . . . . subtract 68, divide by 140
ln(117/140) = -3k . . . . . . take natural logarithms
k = ln(117/140)/-3 ≈ 0.060
__
The temperature after 4 minutes is about ...
T(4) = 68 +140e^(-0.060·4) ≈ 68 +140·0.787186
T(4) ≈ 178.205
After 4 minutes, the final temperature is about 178 °F.
Answer:

Step-by-step explanation:

Answer:
a) 
b) Irrational
Step-by-step explanation:
a) Let 
Then 
Subtract (a) from (b)



b) From part a)
is a rational number but
is an irrational number.
But
is not a rational number because the product of a rational number and an irrational number is an irrational number.
Answer:
B
Step-by-step explanation:
one half lb divided by 7 people will equal one fourteenth