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Sindrei [870]
3 years ago
8

Demarco substitutes a value for x in the equation 2x = 4.

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
6 0

Answer:

If both sides are equal

Step-by-step explanation:

If both sides are equal and are the same in both sides of the equation, than it is a solution.

For instance, the solution for 2x = 4, is x = 2 because 2(2) = 4 is 4 = 4.

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BRAINLIEST YOU WILL BE MARKED BRAINLIEST
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A right rectangular prism is 534 cm wide, 1012 cm long, and 8 cm tall. What is the volume of the prism?
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In a survey of 468 registered voters, 152 of them wished to see Mayor Waffleskate lose her next election. The Waffleskate campai
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Answer: b. Yes

Step-by-step explanation: Confidence Interval for a population proportion is calculated as:

p ± z\sqrt{\frac{p(1-p)}{n} }

where

p is the sample proportion

n is sample size

z is z-score, in this case, as it is 95%, z-score=1.96

Calculating confidence interval:

p=\frac{152}{468}

p = 0.3248

0.3248 ± 1.96\sqrt{\frac{0.3248(0.6752)}{468} }

0.3248 ± 1.96\sqrt{0.000468}

0.3248 ± 0.0425

Interval: 0.2823 < μ < 0.3673

The interval means we are 95% sure the true mean is between 0.2823 and 0.3673. As the campaign claims a proportion of no more than 0.32 of the voters wants to see Mayor Waffleskate defeated and the number is in the confidence interval, the claim is supported.

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