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3 years ago

Is 45/27 equivalent??????

Mathematics

1 answer:

Nat2105 [25]3 years ago

8 0

Yes because it is proportional.

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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.

6 0

3 years ago

Need some help with this question please.

enyata [817]

Anwser:

Y= -2(x)+5

Step by step explanation

Math class

4 0

2 years ago

Select all of the expression that are equivalent to 4(3x + 14y)

ASHA 777 [7]

Answer:

12x + 64y

Step-by-step explanation:

This is the distributed property. You need to apply it according to this question

8 0

3 years ago

HELP MOI. Ty friends

stiv31 [10]

$3.19

That will be the answer sir/ma’am

6 0

3 years ago

Read 2 more answers

The sale price S (in dollars) of an item is given by the formula S=L−rL, where L is the list price (in dollars) and r is the dis

ser-zykov [4K]

The sale price S (in dollars) of an item is given by the formula

S=L−rL , where L is the list price (in dollars) and r is the discount rate.

Since, S = L -rL

rL = L -S

r = $\frac{L-S}{L}$

r = $1-\frac{S}{L}$

Since, the listed price of the shirt is $30, we have to find the discount rate.

Therefore, r = $1-\frac{S}{30}$ is the discount rate.

7 0

3 years ago

Read 2 more answers