The expression 2d gives the grade that a student receives for d correct answers. What is the score for 10 correct answers?

Find the number of positive three-digit even integers whose digits are among 9, 8, 7, 5, 3, and 1.

sp2606 [1]

Answer:

5,3,1

Step-by-step explanation:

7 0

2 years ago

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A company's division registered a loss of (-$3,840) while producing 40 identical parts. What was the loss per part?

konstantin123 [22]

Answer:

Step-by-step explanation:

<h2>Divide -3,840 by 40:</h2><h2>Answer: $ -96</h2>

I hope it helps ♥️♥️♥️

7 0

3 years ago

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- 2/5(20x -15) can you plz help me

Alex17521 [72]

Answer:

Step-by-step explanation:

First I just made -2/5 into a decimal because I like to work with decimals better (which equals -.4)

Then I times everything separately in the parenthesis and got -8x+6

Next you move the 6 over to the left side of the equals sign which would make the equation be -6 = -8x

Lastly you divide the -8 from -6 and you get X = 3/4

7 0

2 years ago

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What ratio represents the probability of drawing a red card from a standard deck of 52 cards

marishachu [46]

Half of the cards are red and half of them are black
so the answer is 1/2

or you can say that 26 are red and 26 are black
26/52 = 1/2

4 0

3 years ago

At a Noodles & Company restaurant, the probability that a customer will order a nonalcoholic beverage is .51.

satela [25.4K]

Answer:

$P(x\geq 7)=0.1886$

Step-by-step explanation:

The variable x, that said the number of customer that will order a nonalcoholic beverage in a sample of n customers follows a binomial distribution. Because we have n identical and independent events with a probability p of success and (1-p) of fail.

So, the probability that x customers will order a nonalcoholic beverage is:

$P(x)=\frac{n!}{x!(n-x)!}*p^{x}*(1-p)^{n-x}$

Where n is the size of the sample and p is the probability that a customer order a nonalcoholic beverage, so replacing the values, we get:

$P(x)=\frac{10!}{x!(10-x)!}*0.51^{x}*(1-0.51)^{10-x}$

Now, the probability that at least 7 will order a nonalcoholic beverage is equal to:

$P(x\geq 7)=P(7)+P(8)+P(9)+P(10)$

Where:

$P(7)=\frac{10!}{7!(10-7)!}*0.51^{7}*(1-0.51)^{10-7}=0.1267\\P(8)=\frac{10!}{8!(10-8)!}*0.51^{8}*(1-0.51)^{10-8}=0.0494\\P(9)=\frac{10!}{9!(10-9)!}*0.51^{9}*(1-0.51)^{10-9}=0.0114\\P(10)=\frac{10!}{10!(10-10)!}*0.51^{10}*(1-0.51)^{10-10}=0.0011$

So, $P(x\geq 7)$ is equal to:

$P(x\geq 7)=0.1267+0.0494+0.0114+0.0011\\P(x\geq 7)=0.1886$

Finally, the probability that in a sample of 10 customers, at least 7 will order a nonalcoholic beverage is equal to 0.1886

5 0

3 years ago