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lisov135 [29]
3 years ago
11

The answer hdfbfifnfifndidndjxnxjdbx

Mathematics
1 answer:
natka813 [3]3 years ago
7 0
The answer would be H 17
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the local independent party wants to poll registered voters to see the proportion who would consider voting for an independent c
SpyIntel [72]

Answer: 1308

Step-by-step explanation:

Given : Level of confidence = 0.97

Significance level : \alpha=1-0.97=0.03

Critical value : z_{\alpha/2}=2.17

Margin of error : E=0.03

If prior proportion of population is unknown , then the formula to find the population proportion is given by :-

n=0.25(\dfrac{z_{\alpha/2}}{E})^2

\Rightarrow n=0.25(\dfrac{2.17}{0.03})^2=1308.02777778\approx1308

Hence, the minimum sample size needed =1308

6 0
3 years ago
Two boys earn money mowing lawns. Jacob mowed 12 lawns this week. He mowed 3 times as many lawns as Kevin mowed. In which equati
olya-2409 [2.1K]

Answer:

Kevin mowed 4 lawns

Step-by-step explanation:

Let the number of lawns Kevin mowed be x.

12 = 3x

x = 4

Topic: Algebraic equations

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3 0
3 years ago
Question 4 of 10
VARVARA [1.3K]

Answer:

A. x=3

Step-by-step explanation:

4(5x+3)=14x+30

multiply 4 to 5x and multiply 4 yo 3

20x+12=14x+30

move terms

20x-14x=30-12

subtract 20x to 14x and subtract 30 to 12

6x=18

divide both sides by 8

x=3

5 0
3 years ago
Find the value of C that makes the trinomial a perfect square
Dafna1 [17]

Answer:

{x}^{2}  + 28x + 4

Step-by-step explanation:

puting the value of x as 2

4+56+4=64

and 64 is the perfect square of 8

<h2><em><u>hope </u></em><em><u>it </u></em><em><u>helps</u></em><em><u> you</u></em><em><u><</u></em><em><u>3</u></em></h2>
5 0
2 years ago
The value of y is directly proportional to the value of x . If y=55 when x = 120 , what is the value of y when x = 60
Lady_Fox [76]

Answer:

The answer would be 27.5

Step-by-step explanation:

Divide 55 by 2

3 0
3 years ago
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