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3 years ago

PLEASE HELP NOW I WILL MARK BRAINLYST IF CORRECT What property of equality is demonstrated below? 2 + (5 + 6) = (2 + 5) + 6

Mathematics

1 answer:

deff fn [24]3 years ago

6 0

The property demonstrated in the example 2 + (5 + 6) = (2 + 5) + 6 is The Associative Property.

We can tell this is the associative property because of what the associative property states. The associative property states that it doesn't matter where you put parenthesis when adding or multiplying numbers. Since we see an equation that has addition, and two equations being equal to each other, despite having different placements of parenthesis, we can see that this equation is demonstrating The Associative Property.

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What is 11/12 - 2/3 <br> Subtracting Proper Fractions

alexgriva [62]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

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natima [27]

Answer:

We conclude that the population mean is 24.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 24

Sample mean, $\bar{x}$ = 22.8

Sample size, n = 100

Alpha, α = 0.05

Sample standard deviation, s = 8.3

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 24\\H_A: \mu \neq 24$

We use Two-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{22.8 - 24}{\frac{8.3}{\sqrt{100}} } = -1.44$

We calculate the p-value with the help of standard z table.

P-value = 0.1498

Since the p-value is greater than the significance level, we accept the null hypothesis. The population mean is 24.

Now, $z_{critical} \text{ at 0.05 level of significance } = \pm 1.96$

Since, the z-statistic lies in the acceptance region which is from -1.96 to +1.96, we accept the null hypothesis and conclude that the population mean is 24.

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Ne4ueva [31]

Answer: Let me try to figure this out but this is not 7-8 grade math level

Step-by-step explanation:

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Answer:

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