Dr/dt = 0.00025/min
V = πr^2h
dV/dt = 2πrh dr/dt
Here, r = 3.8/2 = 1.9, h = 6
dV/dt = 2π(1.9)(6)(0.00025) = 0.00285π = 0.00895 in^2/min
Answer:
4
Step-by-step explanation:
REMEMBER: Y is = f(x).
So the function is equal to the y value.
When x is 3, y is (if you go up the line intersects at) 4.
The value of he function when x = 3 is 4.
4a-9b=22
substitute b=-2
4a -9(-2) = 22
4a +18 =22
subtract 18 from each side
4a = 4
divide by 4
a =1
Choice C
Yes, although this is unlikely as every time she flips the coin there is a 50% chance of getting heads. Therefore, there is a possibility of her getting heads every time
The margin of error for a 95% confidence interval is 0.93.
mean (μ) = 23.4, standard deviation (σ) = 7.6, sample (n) = 254, confidence = 95% = 0.95
α = 1 - C = 1 - 0.95 = 0.05
α/2 = 0.05/2 = 0.025
The z score of α/2 is equal to the z score of 0.475 (0.5 - 0.025) which is equal to 1.96.
The margin of error (E) is given by:

The margin of error for a 95% confidence interval is 0.93.
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