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Olenka [21]
2 years ago
12

3x+7=x^2+6x-3 solving systems of equations how do I solve this I’m stuck pls help

Mathematics
2 answers:
sergij07 [2.7K]2 years ago
3 0

Answer: x = 2, -5

Step-by-step explanation:

Anna [14]2 years ago
3 0

Answer:

r u still stuck?

Step-by-step explanation:

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3 years ago
On average, college graduates spend more money on the lottery than those with only a high school education. True or false?
Anettt [7]
True. College graduates often spend more money on lottery tickets than those with only a high school education, hoping to win big to pay off student loans. Hope this helps!
5 0
2 years ago
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he life of light bulbs is distributed normally. The variance of the lifetime is 625 and the mean lifetime of a bulb is 540 hours
almond37 [142]

Using the normal distribution, it is found that there is a 0.877 = 87.7% probability of a bulb lasting for at most 569 hours.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 540, \sigma = \sqrt{625} = 25

The probability of a bulb lasting for at most 569 hours is the <u>p-value of Z when X = 569</u>, hence:

Z = \frac{X - \mu}{\sigma}

Z = \frac{569 - 540}{25}

Z = 1.16

Z = 1.16 has a p-value of 0.877.

0.877 = 87.7% probability of a bulb lasting for at most 569 hours.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

8 0
1 year ago
What is wrong with this dot plot?
krok68 [10]
The range is 10 to 40 and then the rest .
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2 years ago
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20 POINTS + brainliest to whoever gets it right first
Anettt [7]

Answer:

D. 6 1/12

Step-by-step explanation:

3 2/3= 3 8/12, 1 3/4= 1 9/12, 2/3= 8/12 || add (3 8/12+ 1 9/12+ 8/12= 4 25/12= 6 1/12)

3 0
3 years ago
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