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sesenic [268]
3 years ago
10

Can abyone please give the answer to these questions?

Mathematics
1 answer:
Nady [450]3 years ago
4 0

I don't know how to solve 11 but I guess I can solve 12 so I think those are the answers:

12.

(4, 53)

(5, 85)

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A firm maintains 22 cars for business purposes. From past experience, it is known that approximately 10% will require major engi
seropon [69]

Answer:

The probability that at most 1 car will require major engine repair next year is P=0.3392.

Step-by-step explanation:

This can be modeled as a binomial random variable, with n=22 and p=0.1.

The probability that exavtly k cars will require major engine repair next year is:

P(x=k) = \dbinom{n}{k} p^{k}(1-p)^{n-k}

Then, the probability that at most 1 car will require major engine repair next year is:

P(x\leq1)=P(x=0)+P(x=1)\\\\\\P(x=0) = \dbinom{22}{0} p^{0}(1-p)^{22}=1*1*0.0985=0.0985\\\\\\P(x=1) = \dbinom{22}{1} p^{1}(1-p)^{21}=22*0.1*0.1094=0.2407\\\\\\P(x\leq1)=0.0985+0.2407\\\\P(x\leq1)=0.3392

3 0
3 years ago
One number is five less than a second number. Five times the first is 15 more than 6 times the second. Find the numbers
Shalnov [3]

Answer:

x = -45, y = -40

Step-by-step explanation:

Based on the first clue, we find out that

x + 5 = y

5x = 6y + 15

We can re-write the first equation to x = y - 5.

Therefore, the second equation can also be written as 5(y - 5) = 6y + 15

This can be simplified to 5y - 25 = 6y + 15

We can subtract 6y from each side, and add 25 to each side;

5y - 6y = 15 + 25

Therefore, -y = 40

Therefore y = -40.

Now let's plug this back into the original equation, to get : x  + 5 = -40

x=-45

4 0
3 years ago
What is the probability that the first card is a kingking and the second card is a kingking if the sampling is done with​ replac
IRINA_888 [86]
You want to draw 2 kings from a 52 card deck. And you do it with replacement.
There are 4 kings in a standard deck. The probability of getting one of them is 
4/52 on the first draw.

For the second draw the probability is the same.
4/52

The probability for both happening is 
(4/52)*(4/52) = (1/13)*(1/13) = 1/169 = 0.001597
5 0
3 years ago
A grocery store stocks shelves with 100 cartons of strawberries before the store opens. For the first 3 hours the store is open,
ehidna [41]

Answer:

80 - 30(first hour )=50

50-0(2nd hour)=50

50-20=30

30-20=10

10 Is THE ANSWER

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2 years ago
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Does anyone know all the concepts/rules needed to learn math in college? I want to make sure I have things I need now in my seni
Mandarinka [93]

Answer:

Basic college math topics include whole numbers, fractions, numbers, decimals and integers. Problem solving, algebra, percents and geometry are also included in course content.

Step-by-step explanation:

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2 years ago
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