Answer:

Step-by-step explanation:
In this problem we have a exponential function of the form

where
f(x) is the remaining mass of the element in grams
x is the time in minutes
a is the initial value (y-intercept of the exponential function)
b is the base
r is the rate

In this problem we have

---> is negative because is a decay's rate

substitute
The exponential function is equal to

For x=15 minutes
substitute in the function


Answer:
T= -36
Step-by-step explanation:
T + 8 x 18 = 108
Multiply 8 and 18
T + 144 = 108
Subtract 144 from both sides to get T alone
T = -36
Answer:
owo rawr pie jkjk
i never had pie but if i would try some i would go for cherry
Step-by-step explanation:
9514 1404 393
Answer:
32.7°
Step-by-step explanation:
Solve the given equation for C, then fill in the given values and evaluate.
C = arccos((a² +b² -c²)/(2ab))
Y = arccos((50² +90² -55²)/(2·50·90)) = arccos(7575/9000) ≈ 32.7°
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Y is angle A in the attached triangle solver.