What is the surface area of 8ft 3ft 3ft 3ft

Mathematics

1 answer:

Rainbow [258]2 years ago

3 0

Answer:

multiply them all and you will get the answer. use calculator

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(f^3-5f+25)-(4f^2-12f+9)

pochemuha

Answer:

3−42+7+16

Step-by-step explanation:

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The population of a certain country can be modeled by the equation , where P(t)=40e^0.02t is the population in millions and t is

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Hoochie [10]

Answer:

(cx)2-(dy) 2

Step-by-step explanation:

Formula a2-b2= (a+b) (a-b)

By given formula

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In a sample of 42 water specimens taken from a construction site, 26 contained detectable levels of lead. Construct 90% confiden

hram777 [196]

Answer:

(0.4958, 0.7422)

Step-by-step explanation:

Let p be the true proportion of water specimens that contain detectable levels of lead. The point estimate for p is $\hat{p}=26/42=0.6190$ . The estimated standard deviation is given by $\sqrt{\hat{p}(1-\hat{p})/n}=\sqrt{(0.6190)(1-0.6190)/42}=0.0749$ . Because we have a large sample, the 90% confidence interval for p is given by $0.6190\pm z_{0.05}0.0749$ where $z_{0.05}=1.6448$ is the value that satisfies that above this and under the standard normal density there is an area of 0.05. So, the confidence interval is $0.6190\pm (1.6448)(0.0749)$ , i.e., (0.4958, 0.7422).