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Romashka [77]
3 years ago
7

PLEASE HELP!!!!!!!!!!!!!!

Mathematics
1 answer:
creativ13 [48]3 years ago
4 0

Answer:

a+b=1

Step-by-step explanation:

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-2&lt;× and x&lt;7<br><img src="https://tex.z-dn.net/?f=%20-%202%20%3C%20x" id="TexFormula1" title=" - 2 &lt; x" alt=" - 2 &lt;
bixtya [17]

Answer:

-2 < x < 7

Step-by-step explanation:

And implies intersection

x can be anything greater than -2 but it also has to be less than 7.

Therefore between -2 and 7

7 0
3 years ago
3. A telephone calling center performs two types of solicitations: (1) donations and (2) sales. The center wants to determine ho
zzz [600]

Answer:

hang ups the receiver

Step-by-step explanation:

In this case, there is a difficulty for the call center to determine the average time that each caller spends on each type of request, since there is also the possibility that the recipient will not be interested in the call or hang up when receiving such a call. Therefore, in order to calculate this average in a more real way, the company must statistically monitor this data in relation to each hour of work and how many situations occurred in that hour, how many calls received were answered, how many received a busy signal, how many are not answered and how many calls last less than a minute if the recipient is not interested or hangs up.

Through this data, the company is able to monitor the calls and define telephone service strategies that can retain the customer more if the calls in less than a minute exceed conventional calls.

3 0
2 years ago
A certain intelligence test has an N(100, 100) distribution. To see whether intelligence is inherited, tests are given to the el
Anettt [7]

Answer:

Follows are the solution to the given choices:

Step-by-step explanation:

In choice a:

\to \mu = 100

In choice b:

\to \mu \neq 100

In choice c:

\to \ pop  \ average=100 \\\\ \to \ variance \ of \ pop = 100  \\\\\to pop  \ \  \sigma = \sqrt {(!00)} \\

               = 10

z= \frac{\bar x - \mu}{ \frac{\sigma}{\sqrt(n)}}\\\\

   =\frac{(105-100)}{\frac{10}{ \sqrt(16)}}\\\\=\frac{(5)}{ \frac{10}{4}}\\\\=\frac{5}{ \frac{5}{2}}\\\\= \frac{10}{5}\\\\=2

\to p==2\times (1- \ righttail)\\\\\to \ righttail\ \ p = \text{NORM.S.DIST(2,TRUE)}

                        =0.977249868

\therefore \\P=2 \times (1-0.9772)\\\\P=0.0455\\\\P

Null hypothesis to dismiss  

Alternate solution assumptions embrace  

There is really no valid proof at the 5% stage that  

Knowledge is legacy

In choice d:

Possibly information such as this reflect a sample population with such a true p = 0.0455 meaning in the hypothesis  

u is around 100.  

11 +001

7 0
3 years ago
What is the correct way to write 1,550,000,000 in scientific
Anika [276]
1.55 x10 to the power of 9

            9
1.55x10

should look something like that
6 0
3 years ago
Geri believed the answer to one of her homework problems was 2 cubed. After checking her work, she realized the correct answer w
Murrr4er [49]

Answer:

D

Step-by-step explanation:

7 0
3 years ago
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