How is the product of 3 and –2 shown using integer tiles?

Mathematics

2 answers:

RideAnS [48]3 years ago

8 0

(3)×(-2)=-6 that's the answer

Nata [24]3 years ago

7 0

Answer:

-6

Step-by-step explanation:

Solution :

Since we are given that 3 * -2

SInce 2 has negative sign so will make groups of two negative signs

Since 3 is positive so we will make 3 groups of 2 negative signs (refer the attached figure)

So, there are three groups of two negative signs so there will be 6 negative signs.

Thus the answer will be -6

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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 standard deviation for the sample, 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 $s = 9$ .
Sample size of $n = 23$

The confidence interval is:

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

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

Then:

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