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Mnenie [13.5K]
2 years ago
6

Is √7 a rational number? why or why not? Explain

Mathematics
2 answers:
Contact [7]2 years ago
8 0

Answer:

Is the Square Root of 7 Rational or Irrational? A rational number is defined as a number that can be expressed in the form of a quotient or division of two integers, i.e. p/q, where q is not equal to 0. ... Due to its never-ending nature after the decimal point, √7 is irrational.

Veronika [31]2 years ago
3 0

Answer: √7 is irrational because the square root of 7 isn't a perfect root.

Step-by-step explanation:

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zimovet [89]

Answer:

-7/8

Step-by-step explanation:

If two lines are parallel, they have the same slope. The slope of p is -7/8 (y=mx+b), so the slope of q is also -7/8.

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Which is the equation of a line that has a slope of 5 and passes through point (2, -3)?
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A study of recent records of car accidents revealed that average proportion of drivers who were distracted by their phones at th
aksik [14]

Answer:

At least 547 records need to be studied.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

Z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

And the margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence interval

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so z = 1.96.

In this problem, we have that:

M = 0.04, p = 0.35

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0.04 = 1.96\sqrt{\frac{0.35*0.65}{n}}

0.04\sqrt{n} = 0.93486

\sqrt{n} = 23.37

n = 546.2275

At least 547 records need to be studied.

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3 years ago
Which of the following is NOT true about the hypotenuse of a triangle?
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Answer:

I think this answer is 12.5

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