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Rama09 [41]
3 years ago
15

Given that,2a + 5b=22b = 2Find the value of a.​

Mathematics
2 answers:
Dmitry [639]3 years ago
4 0

Answer:

a=5.5 I hope this helped you

Black_prince [1.1K]3 years ago
3 0

Answer:

11

Step-by-step explanation:

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PLEASE HELP URGENT!!!! Can someone plss help me with these!!
lana66690 [7]

Answer:

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4 0
2 years ago
manufacturing company produces digital cameras and claim that their products maybe 3% defective. A video company, when purchasin
alexdok [17]

Answer:

P(X>17) = 0.979

Step-by-step explanation:

Probability that a camera is defective, p = 3% = 3/100 = 0.03

20 cameras were randomly selected.i.e sample size, n = 20

Probability that a camera is working, q = 1 - p = 1 - 0.03 = 0.97

Probability that more than 17 cameras are working P ( X > 17)

This is a binomial distribution P(X = r) nCr q^{r} p^{n-r}

nCr = \frac{n!}{(n-r)!r!}

P(X>17) = P(X=18) + P(X=19) + P(X=20)

P(X=18) = 20C18 * 0.97^{18} * 0.03^{20-18}

P(X=18) = 20C18 * 0.97^{18} * 0.03^{2}

P(X=18) = 0.0988

P(X=19) = 20C19 * 0.97^{19} * 0.03^{20-19}

P(X=19) = 20C19 * 0.97^{19} * 0.03^{1}

P(X=19) = 0.3364

P(X=20) = 20C20 * 0.97^{20} * 0.03^{20-20}

P(X=20) = 20C20 * 0.97^{20} * 0.03^{0}

P(X=20) = 0.5438

P(X>17) = 0.0988 + 0.3364 + 0.5438

P(X>17) = 0.979

The probability that there are more than 17 working cameras should be 0.979 for the company to accept the whole batch

6 0
3 years ago
25pts for correct answer with explanation Find the value of x when 2(x - 3) + 1 = 3x + 4
trapecia [35]
The answer is A) -1.
3 0
2 years ago
Answer plzzz. Tell the truth and answer correctly
Free_Kalibri [48]

Answer:

54 feet

Step-by-step explanation:

We can use proportions

1 inch      27 inches

--------- = ------------

2 feet           x feet

Using cross products

1x = 54

The building is 54 feet

3 0
3 years ago
How do you round 38.25
solniwko [45]
Because its under 6 you must round it down to 38.20 if it was 38.68 for example it would be 38.70
4 0
3 years ago
Read 2 more answers
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