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2 years ago

Solve the following compound inequality: 3<-2x-137.

Mathematics

1 answer:

yarga [219]2 years ago

3 0

Answer:

Step-by-step explanation:

Here you go mate

PEDMAS

STEP 1

3<-2x-137 equation

STEP 2

3<-2x-137 simplify by reversing equation

-2x-137>3

STEP 3

-2x-137>3 simplify

-2x>140

step 4

-2x>140 look for a number that can divide the two numbers like 2

-2x /-2 > 140 /-2

1>-70

answer

x>-70

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Step-by-step explanation:

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3 years ago

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Answer:

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3 years ago

An important factor in selling a residential property is the number of times real estate agents show a home. A sample of 23 home

liberstina [14]

Using the t-distribution, it is found that the 95% confidence interval for the mean number of people the houses were shown is (20.1, 27.9).

We have the <u>standard deviation for the sample</u>, hence the t-distribution is used to build the confidence interval. Important information are given by:

Sample mean of $\overline{x} = 24$ .
Sample standard deviation of $s = 9$ .
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The confidence interval is:

$\overline{x} \pm t\frac{s}{\sqrt{n}}$

In which t is the critical value for a <u>95% confidence interval with 23 - 1 = 22 df</u>, thus, looking at a calculator or at the t-table, it is found that t = 2.0739.

Then:

$\overline{x} - t\frac{s}{\sqrt{n}} = 24 - 2.0739\frac{9}{\sqrt{23}} = 20.1$

$\overline{x} + t\frac{s}{\sqrt{n}} = 24 + 2.0739\frac{9}{\sqrt{23}} = 27.9$

The 95% confidence interval for the mean number of people the houses were shown is (20.1, 27.9).

A similar problem is given at brainly.com/question/15180581

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Answer:

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