Answer:
24
Step-by-step explanation:
4/3=d/18
3d=4*18=72
d=24
Answer:
Step-by-step explanation:
The hypotheses are:
Null Hypothesis
Alternative Hypothesis
Since the t-statistic score is greater than the critical t-score, so the decision is to reject the null hypothesis.
<u>See image for detailed solution</u>
Answer: 28
Step-by-step explanation: 3(28)- 21=63
Answer:
Time,t that it will elapse before the concerntration of the dye in the tank reaches1% of its original value is 460.52 seconds
Step-by-step explanation:
Let Q(t) = amount of dye for all time,t.
Let Q'= rate in - rate out.
But Q/200 = concerntration of dye
Therefore rate out= Q/200 ×2.
Q'/Q = - 1/100
Dividing by Q gives
Ln/Q/ + c = -1/100t + c1
Integrating both sides with respect to t
Ln/Q/ = -1/100t + c2.
c1 and c1 are just another constants
Q= c3e^-t/100
Exponentiating both sides will cause the absolute values to get absorbed into the constants giving rise to a new constant c3
200= c3-0/100
c3= 200
2= 200e^-t/100
Ln1/100= - t/100
Ln0.01 = - t/ 100
Cross multiply
t= Ln0.01 × 100
t = 4.6052 ×100
t = 460.52seconds
12 e 14 e diga quais São os primos e quais São compostos
