3 years ago

Which of the following is equal to the rational expression when x ≠5 or -3?

Mathematics

1 answer:

Wewaii [24]3 years ago

8 0

Answer:

Step-by-step explanation:

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After calculating the sample size needed to estimate a population proportion to within 0.05, you have been told that the maximum

Svetlanka [38]

Answer: 40000

Step-by-step explanation:

The formula to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$ , where p is the prior estimate of the population proportion.

Here we can see that the sample size is inversely proportion withe square of margin of error.

i.e. $n\ \alpha\ \dfrac{1}{E^2}$

By the equation inverse variation, we have

$n_1E_1^2=n_2E_2^2$

Given : $E_1=0.05$ $n_1=1000$

$E_2=0.025$

Then, we have

$(1000)(0.05)^2=n_2(0.025)^2\\\\\Rightarrow\ 2.5=0.000625n_2\\\\\Rightarrow\ n_2=\dfrac{2.5}{0.000625}=4000$

Hence, the sample size will now have to be 4000.

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2 years ago

A water cooler holds 15 liters of sports drink. Approximately how many gallons is this? (1 gallon = 3.785 liters)

Katena32 [7]

Approximately 3.9 gallons I’m sure of

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3 years ago

Let f(t)=6−2t2. Evaluate f(t+1).

tia_tia [17]

Answer:

f(t+1)= -4t+2

Step-by-step explanation:

Subsitute the given vaule into the function and evaluate.

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2 years ago

124 ounces decreased by 67%

slavikrds [6]

40.92 ounces.
You can find it by multiplying 124 by 0.33

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3 years ago

Read 2 more answers

What is the probability that the outcome is a 6?

STatiana [176]

Answer:

depends on what it is. like is it a dice or something you're pulling out of a bag.

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3 years ago