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2 years ago

What is 12/5 as a mixed number.What is 11/7 as a mixed number.What is 15/4 as a mixed number

Mathematics

2 answers:

mars1129 [50]2 years ago

7 0

2 2/5
1 4/7
3 2/4 when simplified it is 3 1/2

Kaylis [27]2 years ago

3 0

Answer:

12/5=2 2/3 11/7=1 4/7 15/4= 3 1/2

Step-by-step explanation: Divide the numerator(12,11,15) by the denominator (5,7,4). Write down the whole number answer. Then write down any remainder above the denominator. Then simplify if needed.

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The expected (mean) life of a particular type of light bulb is 1,000 hours with a standard deviation of 50 hours. The life of th

love history [14]

Answer:

Option B) 0.0013

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 1000 hours

Standard Deviation, σ = 50 hours

We are given that the distribution of life of bulb is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(bulb would last longer than 1150 hours)

$P( x > 1150) = P( z > \displaystyle\frac{1150 - 1000}{50}) = P(z > 3)$

$= 1 - P(z \leq 3)$

Calculation the value from standard normal z table, we have,

$P(x > 1150) = 1 - 0.9987 = 0.0013$

0.0013 is the probability that a randomly selected bulb would last longer than 1150 hours.

Thus, the correct answer is

Option B) 0.0013

3 0

3 years ago

Pls help, will give brainliest if your answer is right!<br><br> Question in image.

Blababa [14]

Step-by-step explanation:

Mean = Average : Sum of the data ÷ Number of data

So find the average number of lates per student

4 = Lates

30 (sum of frequencies) = Frequencies

So 4 ÷ 30 = 7.5

Therefore the answer is 7.5..

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2 years ago

There are 90 total days in winter. If it snowed on 30% of the days, on how many days of winter did it snow?

Artemon [7]

Answer:

Step-by-step explanation:

30%=0.3 in decimal form

90×0.3=27

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3 years ago

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Whats 5678 divided by 45.7

ddd [48]

5678 divided by 45.7 is 124.245...

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2 years ago

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You should have ____ revolving credit lines. A. 3. B. 1 to 3. C. 2. D. 2 to 6

Rom4ik [11]

Revolving credit lines open account credit offered by banks or other financial institutions.
You should have <span>2 to 6 </span>revolving credit lines.

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3 years ago

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