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8090 [49]
2 years ago
9

Solve x+1>3. Graph the solution.

Mathematics
1 answer:
sp2606 [1]2 years ago
5 0

Answer:

x>2

Step-by-step explanation:

x+1>3.

Subtract 1 from each side

x+1-1 > 3-1

x>2

There is an open circle at 2 and the lines goes to the right

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Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p. n=500, x=
DiKsa [7]

Answer:

0.3581<x<0.4429

Step-by-step explanation:

Using the formula for calculating the confidence interval of the population proportion p expressed as:

Confidence interval = p ± Z * √p(1-p)/n

p is the population proportion = x/n

p = 200/500

p = 0.4

Z is the z-score at 95% CI = 1.96

n is the sample size = 500

Substituting the given parameters into the formula we will have;

Confidence interval = 0.4 ± 1.96 * √p(1-p)/n

Confidence interval = 0.4 ± 1.96 * √0.4(0.6)/500

Confidence interval = 0.4 ± 1.96 * √0.24/500

Confidence interval = 0.4 ± 1.96 * √0.00048

Confidence interval = 0.4 ± 1.96 * 0.0219

Confidence interval = 0.4±0.04294

Confidence interval = (0.3571, 0.4429)

Hence the confidence interval of the population mean is 0.3581<x<0.4429

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3 years ago
Please help math 1-2 high school solving proofs.
Dafna1 [17]

Answer:

1= A

2= C

Step-by-step explanation:

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3 0
2 years ago
45% of a number is 180
topjm [15]

Step-by-step explanation:

45% of number = 180

=> 100% of number = 180 * (100/45) = 400.

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Please help my brain is dead -_-
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