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AlladinOne [14]
3 years ago
8

Is : -.6 IRRATIONAL? yes or no

Mathematics
2 answers:
Anastaziya [24]3 years ago
7 0

Answer:

I would say -6 is an irrational number.

Step-by-step explanation:

Either way, -6 is a rational number, because it can be expressed as a fraction where the numerator and denominator are integers and the denominator doesn't equal 0.

(Can you help me on another question)

My question box doesn´t work.

zimovet [89]3 years ago
6 0
Yes i believe it is a irrational
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B. One arm extended straight to the side

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2 years ago
Which statement would produce a tautology?<br> p q<br> p q<br> p p<br> q p
Vladimir [108]
Hello There!

I'm assuming it is p p.

Hope This Helps You!
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- Hannah ❤
3 0
3 years ago
Read 2 more answers
When we toss a coin, there are two possible outcomes: a head or a tail. Suppose that we toss a coin 100 times. Estimate the appr
marin [14]

Answer:

96.42% probability that the number of tails is between 40 and 60.

Step-by-step explanation:

I am going to use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

100 tosses, so n = 100

Two outcomes, both equally as likely. So p = \frac{1}{2} = 0.5

So

E(X) = np = 100*0.5 = 50

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{100*0.5*0.5} = 5

Estimate the approximate probability that the number of tails is between 40 and 60.

Using continuity correction.

P(40 - 0.5 \leq X \leq 60 + 0.5) = P(39.5 \leq X \leq 60.5)

This is the pvalue of Z when X = 60.5 subtracted by the pvalue of Z when X = 39.5. So

X = 60.5

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

Z = \frac{60.5 - 50}{5}

Z = 2.1

Z = 2.1 has a pvalue of 0.9821

X = 39.5

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

Z = \frac{39.5 - 50}{5}

Z = -2.1

Z = -2.1 has a pvalue of 0.0179

0.9821 - 0.0179 = 0.9642

96.42% probability that the number of tails is between 40 and 60.

8 0
3 years ago
Find the slope of the line below. Enter your answer as a fraction of
Levart [38]

Answer:

  • \boxed{\sf{\dfrac{3}{10}}}

Step-by-step explanation:

Use the slope formula.

<h3 /><h3>What is a slope?</h3>

Slope is a surface with one end higher than the other and with no steps. It proceeds at an angle. The path sloped down to the beach.

So, the property possessed by a line or surface that departs from the horizontal.

<u>Slope formula:</u>

\longrightarrow \sf{\dfrac{y_2-y_1}{x_2-x_1} }

(-6,-2) (4,1)

  • y₂=1
  • y₁=(-2)
  • x₂=4
  • x₁=(-6)

<u>Rewrite the problem down.</u>

\sf{\dfrac{1-\left(-2\right)}{4-\left(-6\right)}}

<u>Solve.</u>

1-(-2)=1+2

<u>Add.</u>

1+2=3

4-(-6)=4+6

4+6=10

\boxed{\sf{\frac{3}{10} }}

Therefore, the slope is 3/10, which is our answer.

To learn more about slope:

brainly.com/question/24241142

brainly.com/question/66944

#SPJ1

4 0
2 years ago
Which statement about the ordered pairs (−9,3) and (2,−4) is true for the equation 6x−y2=14 ?
ehidna [41]

Answer:

What are the statements to choose from? Send me a message with the choices.

Step-by-step explanation:

6x-2y=14

+2y +2y

6x=14+2y

5 0
3 years ago
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