3 years ago

Match the situation to the correct expression. The sum of n and 40

Mathematics

1 answer:

lisov135 [29]3 years ago

3 0

The correct expression would be n+40

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3x+11y=8 SOLVE FOR Y

viva [34]

3x + 11y = 8
-3x -3x
11y = 8 - 3x
/11 /11
y = 0.72 - 3x/11

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3 years ago

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An optical inspection system is used to distinguish among different part types. The probability of a correct classification of a

Whitepunk [10]

Answer: $\mu=2.88\ \&\ \sigma^2=0.115$

Step-by-step explanation:

Given : The probability of a correct classification of any part is : p=0.96

sample size : n= 3

The formula to find the mean and variance for binomial distribution is given by :-

$\mu=np\\\\\sigma^2=np(1-p)$

Let the random variable X denote the number of parts that are correctly classified.

The, for the given situation, we have

$\mu=3(0.96)=2.88\\\\\sigma^2=(3)(0.96)(1-0.96)=0.1152\approx0.115$

Hence, the mean and variance of X are 2.88 and 0.115 respectively.

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3 years ago

Each of these equations represents the same function written in different forms.

Elina [12.6K]

Answer: f(x)=(x+2)(x−4) because you can see when each factor is equal to zero.

Step-by-step explanation:

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2 years ago

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Simplify the expression: -5(2x - 5)

OverLord2011 [107]

Answer:

-10x+25

Step-by-step explanation:

−5(2x−5)

=(−5)(2x+−5)

=(−5)(2x)+(−5)(−5)

=−10x+25

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2 years ago

Decide if the expressions are equivalent. 2.5x and x+5

Serggg [28]

If you want to see if they are equivalent just substitute any number such as 2, so 2.5(2) = 5 and 2 + 5 = 7, so they are not equivalent (THIS IS TRUE UNLESS YOU DIDNT PUT THE X VALUE IN THE QUESTION)

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3 years ago