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daser333 [38]
3 years ago
15

Pls help again (picture below)

Mathematics
1 answer:
Olenka [21]3 years ago
8 0

Answer:

C 10 to the power of 7 equals 10,000,000 and x 3.45 = 3450000000

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.

6 0
3 years ago
Solve for given replacement set for 21- 5x -4 = x +4 ( 0, 2, 4 )
FrozenT [24]
\left[x \right] = \left[ \frac{13}{6}\right][x]=[​6​​13​​]
totally answer
3 0
3 years ago
If 21 is added to a number the result is 40 less than twice the number what is the number?
Karolina [17]
If 21 is added to (+ 21) a number (x) the result (=) is 40 less than (- 40) twice the number (2x)

x + 21 = 2x - 40   Add 40 to both sides
x + 61 = 2x           Subtract x from both sides
      61 = x             Switch the sides to make it easier to read
       x = 61


7 0
3 years ago
Find the sum of
Mars2501 [29]

If I read it right then 1. -147

2. -100

4 0
3 years ago
An oil company fills 1 over 12 of a tank in 1 over 3 hour. At this rate, which expression can be used to determine how long will
IrinaK [193]

Answer:

(1/3)x12 hrs

Step-by-step explanation:

5 0
3 years ago
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