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4 years ago

Graph the following inequality on the number line above. 3x < 12

Mathematics

1 answer:

shtirl [24]4 years ago

4 0

We need to isolate x by diving 3 on both sides and you get x<4. To graph this, put an open circle around 4 (because 4 cannot be one of the solutions) and draw an arrow going left because x can be anything below 4

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A survey found that the American family generates an average of 17.2 pounds of glass garbage trash each year. Assume the standar

SIZIF [17.4K]

Answer: 0.8137

Step-by-step explanation:

As per given , we have

$\mu= 17.2\ ,\ \sigma=2.5$

Sample size : n= 47

Let $\overline{X}$ be the sample mean o.

Then, the probability that the mean of a sample of 47 families will be between 16.6 and 17.6 pounds will be :

$P(16.6$

$=P(-1.645$

[∵ $z= \dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$ ]

$=P(z$

$=0.8636793-(1- 0.9500151)$ [By using p-value calculator]

$=0.8636793-0.0499849=0.8136944\approx0.8137$

Hence, the probability that the mean of a sample of 47 families will be between 16.6 and 17.6 pounds= 0.8137

6 0

4 years ago

Fourteen less than five times number is three times a number. Define a variable, write an equation, and solve to find the number

goldenfox [79]

5a-14=3a
-5a -5a
-14= -2a
---- ----
-2 -2
<span>7=a

a is the variable, </span><span>5a-14=3a and a equals 7.</span>

8 0

3 years ago

PLEASE HELP

Serhud [2]

Answer:

D. -1.560x + 22.105

3 0

3 years ago

Descriptive statistic that tells us where the scores tend to cluster in a set of measurements?

DIA [1.3K]

They're several answers to this question, depending on the circumstances and what you are trying to show with the statistics. typically we use mean, median, and mode the most

6 0

3 years ago

Question 2 (2 points)

katovenus [111]

Answer:

x^(2) + 14 x + 49

Step-by-step explanation:

7 0

3 years ago