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BARSIC [14]
3 years ago
6

WILL MARK BRAINLIEST PLEASE HELP FAST !!!!! What is an equation in point-slope form for the linear function whose graph contains

the points (4,-7) and (5.O)? Show your work.
Mathematics
1 answer:
liraira [26]3 years ago
4 0

Answer:

y-0=7(x-5)

Step-by-step explanation:

We must first calculate the slope (m) by using the following formula:

m=\frac{y_{2}-y_1}{x_{2}-x_{1}} =\frac{0-(-7)}{5-4} =\frac{7}{1} =7

So our slope (m) is 7.  Now we will plug in our slope and we can choose any point either (4,-7) or (5,0).  I will choose (5,0) since it will make the math easier to work with and so:

y-y_{1}=m(x-x_{1})\\\\y-(0)=7(x-5)

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The probability of winning on a slot machine is 5%. If a person plays the machine 500 times, find the probability of winning at
tamaranim1 [39]

Answer:

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Step-by-step explanation:

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

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Normal probability distribution

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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:

n = 500, p = 0.05

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\mu = E(X) = np = 500*0.05 = 25

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{500*0.05*0.95} = 4.8734/tex]
Find the probability of winning at least 30 times.Using continuity correction, this is [tex]P(X \geq 30 - 0.5) = P(X \geq 29.5). So this is 1 subtracted by the pvalue of Z when X = 29.5. Then

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

Z = \frac{29.5 - 25}{4.8734}

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