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ANTONII [103]
3 years ago
12

Select the all numbers below which are rational numbers.

Mathematics
2 answers:
AfilCa [17]3 years ago
8 0

-76

10.030030030030030...

0.625

18.310

square root 0.25

5/9

tigry1 [53]3 years ago
5 0

Answer:

-76, 10.030030003, .625, 18.310, and 5/9 are rational numbers

Step-by-step explanation:

Rational Numbers can be expressed as p/q, and if they go on forever they repeat. Pi and the Square Roots are irrational as they can't be expressed as a fraction and don't have any pattern when they go on forever.

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Please help with problems 6 and 7.
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Step-by-step explanation:

It is 185 mi to fort Worth van drives 2 hours at 65 mph how far will he be from fort Worth

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2 years ago
Solve, cross multiply<br><br>(x+2) / 2x = 3/2
bonufazy [111]

Answer:

1

Step-by-step explanation:

x+2/2x=3/2

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5 0
2 years ago
The income distribution in a county is a normal distribution with a mean income of $10,000. The top 2.5% of the wage earners ear
earnstyle [38]

Answer:

<em>84%</em><em> of the wage earners earn less than $14,000 each. </em>

Step-by-step explanation:

The Empirical Rule (68-95-99.7%)-

According to this around 95% of the data will fall within two standard deviations of the mean.

As the bell curve is symmetrical, so the remaining 5% will be divided into 2 equal parts. So 2.5% will be above 2 standard deviation and 2.5% will be below 2 standard deviation.

As it is given that, the top 2.5% of the wage earners earn $18,000 or more, so 18,000 is 2 standard deviation away from the mean 10,000.

i.e 2\sigma=18000-10000=8000

\Rightarrow \sigma = 4000

We know that,

Z=\dfrac{X-\mu}{\sigma}

where,

X = raw score = 14,000

μ = 10,000

σ = 4,000

Putting the values,

Z=\dfrac{14000-10000}{4000}=\dfrac{4000}{4000}=1

Now, calculating the value from the z score table,

P(1)=0.8413=84.13\%

As the probability at z=1 is the area below that, so 84% of the wage earners earn less than $14,000 each.

6 0
3 years ago
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