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Mekhanik [1.2K]
3 years ago
6

Factor this expression 27x+15y-9

Mathematics
1 answer:
Svet_ta [14]3 years ago
6 0
Factor the following:
27 x + 15 y - 9

Factor 3 out of 27 x + 15 y - 9:

Answer:  3 (9 x + 5 y - 3)
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Reena scored 25 marks out of 30 in Math test and 35 out of 42 in Science test. In which test has she scored better?
alexandr402 [8]

Step-by-step explanation:

None is better they have the same score in percentage.

5 0
3 years ago
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Lots of 40 components each are deemed unacceptable if they contain 3 or more defectives. The procedure for sampling a lot is to
MrRissso [65]

Answer:

The probability of founding exactly one defective item in the sample is P=0.275.

The mean and variance of defective components in the sample are:

\mu=0.375\\\\\sigma^2=0.347

Step-by-step explanation:

In the case we have a lot with 3 defectives components, the proportion of defectives is:

p=3/40=0.075

a) The number of defectives components in the 5-components sample will follow a binomial distribution B(5,0.075).

The probability of having one defective in the sample is:

P(k=5)=\binom{5}{1}p^1(1-p)^4=5*0.075*0.925^4=0.275

b) The mean and variance of defective components in the sample is:

\mu=np=5*0.075=0.375\\\\\sigma^2=npq=5*0.075*0.925=0.347

The Chebyschev's inequality established:

P(|X-\mu|\geq k\sigma)\leq \frac{1}{k^2}

6 0
3 years ago
Look at the figure below:
Dmitrij [34]
The answer has to be 10
3 0
2 years ago
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Lucas wants to put soil in his garden shown below. If soil comes in bags that fill 2 square yards each, how many bags of soil sh
Phantasy [73]

Answer:

3 bags

Step-by-step explanation:

4/3 x 9/2 = 36/6

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so you will nee 3 bags of soil.

8 0
2 years ago
How would you do this question?
Katarina [22]

Answer:

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Step-by-step explanation:

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