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Serggg [28]
3 years ago
14

DISTRIBUTIVE PROPERTY TO WRITE EXPRESSION THAT IS EQUIVALENT TO 2(3X-9)

Mathematics
1 answer:
Basile [38]3 years ago
4 0

Answer:

6x-18

Step-by-step explanation:

multiply 2by 3x

and 2 by -9

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Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 76.676.6
faltersainse [42]

Answer:

Step-by-step explanation:

Researchers measured the data speeds for a particular smartphone carrier at 50 airports.

The highest speed measured was 76.6 Mbps.

n= 50

X[bar]= 17.95

S= 23.39

a. What is the difference between​ the carrier's highest data speed and the mean of all 50 data​ speeds?

If the highest speed is 76.6 and the sample mean is 17.95, the difference is 76.6-17.95= 58.65 Mbps

b. How many standard deviations is that​ [the difference found in part​ (a)]?

To know how many standard deviations is the max value apart from the sample mean, you have to divide the difference between those two values by the standard deviation

Dif/S= 58.65/23.39= 2.507 ≅ 2.51 Standard deviations

c. Convert the​ carrier's highest data speed to a z score.

The value is X= 76.6

Using the formula Z= (X - μ)/ δ= (76.6 - 17.95)/ 23.39= 2.51

d. If we consider data speeds that convert to z scores between minus−2 and 2 to be neither significantly low nor significantly​ high, is the​ carrier's highest data speed​ significant?

The Z value corresponding to the highest data speed is 2.51, considerin that is greater than 2 you can assume that it is significant.

I hope it helps!

3 0
3 years ago
Which equation is true for x = 1.8?
Rina8888 [55]

Answer:

First equation is the right answer.

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Hence proved

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Helga [31]

Answer:

Step-by-step explanation:

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Firstly, we multiply n to get rid of it by both sides. Since n is dividing a.

d=m+a/n

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Answer:

ok

Step-by-step explanation:

what do u mean by the simplest form?

8 0
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