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3 years ago

6

Find the slope of the line that passes through the points (4, 3) and (2, 7).

1 answer:

Debora [2.8K]3 years ago

6 0

Answer: -2/1

Step-by-step explanation:

Slope = Change in y/Change in x

Equation:

(7-3)/(2-4)

Evaluate:

4/-2

Simplify:

-2/1

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uranmaximum [27]

Answer:

The second answer. If I got it wrong tried my best

Step-by-step explanation:

brainliest

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3 years ago

FIRST PERSON GETS BRAINLIEST

Sunny_sXe [5.5K]

X = 61 degrees.
Find the number of degrees in a pentagon by using the following formula:
(number of sides - 2)180 = 540.
There are 540 degrees in a pentagon.
Since we know four of the angles, we can subtract them from 540 to get the fifth angle.
540-138-144-107-90 = 61

Hope this helped =)

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3 years ago

Read 2 more answers

There are six songs on your playlist. With

Viefleur [7K]

Answer:

1 in 36

Step-by-step explanation:

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3 years ago

Divide £21 in ratio 3:4

xxMikexx [17]

3+4 = 7
so
21 / 7 3

3 x 3 = 9
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answer
£21 in ratio 3:4 is £9:£12

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4 years ago

Which statement is not true for a binomial distribution with n = 15 and p = 1/20 ? a) The standard deviation is 0.8441 b) The nu

malfutka [58]

Answer:

d) The highest probability occurs when x equals 0.7500

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability, given by the following formula:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

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

In this problem, we have that:

$n = 15, p = \frac{1}{20}$

a) The standard deviation is 0.8441

$\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{15*0.05*0.95} = 0.8441$

This is correct

b) The number of trials is equal to 15

n is the number of trials and $n = 15$ . So this option is correct.

c) The probability that x equals 1 is 0.3658

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 1) = C_{15,1}.(0.05)^{1}.(0.95)^{14} = 0.3658$

This option is correct.

d) The highest probability occurs when x equals 0.7500

False. The number of sucesses is a discrete number, that is, 0, 1, 2,...,15. P(X = 0.75), for example, does not exist.

e) The mean equals 0.7500

$E(X) = np = 15*0.05 = 0.75$

This option is correct.

f) None of the above

d is false

3 0

3 years ago