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Elena-2011 [213]
3 years ago
11

Rewrite the equation by completing the square. r? + 7r + 12 = 0

Mathematics
1 answer:
Mazyrski [523]3 years ago
6 0

Answer:

r: 4 or/and r: 3

Step-by-step explanation:

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Answer:

1+1=2................<em>.</em><em>.</em><em>.</em><em>.</em>

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3 years ago
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Gina and Stewart are surf-fishing on the Atlantic coast, where both bluefish and pompano are
viktelen [127]

Using the normal distribution, it is found that due to the greater z-score, Stewart caught the longer fish relative to the same specie.

<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.

To find who caught the longer fish relative to the same specie, we need to find out who had the higher z-score.

Stewart caught a bluefish with a length of 322 mm, hence the parameters are as follows:

X = 322, \mu = 267, \sigma = 39

The z-score is:

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

Z = \frac{322 - 267}{39}

Z = 1.41

Gina caught a pompano with a length of 176 mm, hence the parameters are as follows:

X = 176, \mu = 155, \sigma = 28

The z-score is:

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

Z = \frac{176 - 155}{28}

Z = 0.75.

Hence Stewart caught the longer fish relative to the same specie.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

8 0
2 years ago
Describe the location of point (−2, 6, 7) in three-dimensional coordinate space.
Snowcat [4.5K]

B: From the origin, move 2 units back, 6 units left, and 7 units up.

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4 years ago
Solve <br> | 2x + 6 | = x
Lemur [1.5K]

Answer:

1)<u> </u><u>soln</u>,

or,2x+6=x

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4 0
3 years ago
Jack divided his fortune of $92,000 into 8 equal parts. He gave 4 parts to his wife, 1 part to his son and divided the remaining
Karolina [17]

Answer:

4,600

Step-by-step explanation:

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11500 x 4= 46000 to his wife

11500 for the son

92000-57500= 34500

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11500-6900= 4600 is how more he is getting than each charity

6 0
4 years ago
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