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2 years ago

Why is 7.8 an irrational number?

Mathematics

2 answers:

andreyandreev [35.5K]2 years ago

6 0

Its 78/10 = 39/5
Hope it helps :)

Nesterboy [21]2 years ago

6 0

Answer: It is a rational number

Step-by-step explanation:

any number that can be written in the form of fraction is rational number (or as the a decimal that has a end or repeating decimal are rational number)

7.8=39/5

Hope this helps!! :)

Please let me know if you have any question

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A clinical trial was conducted to test the effectiveness of a drug for treating insomnia and older subjects before treatment 14

RideAnS [48]

Answer:

99% confidence interval estimate of the mean weight time for a population with drug treatments

(79.11 , 112.69)

Step-by-step explanation:

Step(i):-

Given data mean of the Population = 104 minutes

Given sample size 'n' =14

Mean of the sample(x⁻) = 95.9 minutes

Given Standard deviation = 24.4 minutes

Step(ii):-

99% confidence interval estimate of the mean weight time for a population is determined by

$(x^{-} - Z_{0.01} \frac{S.D}{\sqrt{n} } , x^{-} +Z_{0.01} \frac{S.D}{\sqrt{n} })$

$(95.9 - 2.576\frac{24.4}{\sqrt{14} } , 95.9+2.576\frac{24.4}{\sqrt{14} })$

On calculation , we get

(95.9 -16.79 , 95.9 +16.79)

(79.11 , 112.69)

Conclusion:-

99% confidence interval estimate of the mean weight time for a population with drug treatments

(79.11 , 112.69)

7 0

2 years ago

Will Smith obtained a $2,000 loan to purchase a computer. His interest rate is 7% ordinary interest for 108 days. How much inter

Liula [17]

2000x7/100=140
2000-140=1860

4 0

3 years ago

Please solve for the triangle thank you

Mazyrski [523]

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8 0

2 years ago

What is the constant of proportionality in the equation x/y=2/9?

prisoha [69]

Answer:

x/y=2/9

y = 9/2 x

Step-by-step explanation:

hope it's helpful ❤❤ THANK YOU.

4 0

2 years ago

Please help a14= 1 2 5

Butoxors [25]

ANSWER

$a_{14} = 5$

EXPLANATION

The given matrix is a 4 by 4 matrix.

We want to find

$a_{14}$

This is the entry in Row 1 Column 4.

We trace row 1 Column 4 and identify the entry in their intersection.

This entry is 5

$a_{14} = 5$

3 0

2 years ago