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KonstantinChe [14]
3 years ago
11

Which equation does not belong? Explain your reasoning 2x + y = 4 y = -2x + 4 f(x) = -2x + 4 2x + 2y = 4

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
5 0

Answer:

2x + 2y = 4  does not belong

Step-by-step explanation:

2x + y = 4     → <u>y = -2x + 4</u>

y = -2x + 4    → <u>y = -2x + 4</u>

f(x) = -2x + 4 → <u>y = -2x + 4</u>

2x + 2y = 4   → <u>y = -x + 2</u>

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IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.
jekas [21]

Using the normal distribution, it is found that 1851 people would have an IQ less than 115.

<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 = 100, \sigma = 15

The proportion of IQ scores less than 115 is the <u>p-value of Z when X = 115</u>, hence:

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

Z = \frac{115 - 100}{15}

Z = 1

Z = 1 has a p-value of 0.8413.

Out of 2200 people:

0.8413 x 2200 = 1851.

More can be learned about the normal distribution at brainly.com/question/27643290

#SPJ1

5 0
1 year ago
In his last football game, Sean rushed for 94 yards. if his season total is now 871 yards, how many total yards did he have prio
Masteriza [31]

it should be somewhere around 110 to 120 yards


4 0
3 years ago
15 less than a number tripled is equivalent to the difference of the same number and 12
Nitella [24]

Step-by-step explanation:

x = number

3x - 15 = (x - 12)×-4 or (12-x)×-4

3x - 15 = -4x + 48 or -48 + 4x

7x = 63, x = 9 or

33 = x

4 0
2 years ago
2
Rama09 [41]

Answer:

(-1,4)

Step-by-step explanation:

mp=xi+xii/2,yi+yii/2

7+-9/2=-1

0+8/2=4

=(-1,4)

5 0
2 years ago
From 9:30 am to 5:45 pm, how many hours is that? Please show your work.
aalyn [17]
The answer is 8 1/4 hours
5 0
3 years ago
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