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marissa [1.9K]
3 years ago
15

J / -2 + 7 = -12 j = ?

Mathematics
2 answers:
solong [7]3 years ago
8 0

Answer:

Step-by-step explanation:  okay so the answer is 38

​

Aleks [24]3 years ago
6 0

Answer:

\frac{j}{ - 2}  + 7 =  - 12

\frac{j}{ - 2}  =  - 19

j = 38

mark brainliest please.

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Answer:

To determine if a proportional relationship exists look for the data to lie on a straight line passing through the origin. to examine the ratio y/x (instead of x/y).

Step-by-step explanation:

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3 years ago
Which equation represents f(x)?<br> f(x) = x<br> f(x) = 3/5x-1<br> Of(x) = 3/- x
Lelu [443]

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no

Step-by-step explanation:

5 0
2 years ago
To find proportion of the area under the normal curve between two Z scores that are both above the mean, it is necessary to exam
VikaD [51]

It is necessary to imagine the sum of the areas between each z-score and the average.

Given as the ratio of the area under the normal curve between two z-scores, both above average.

The  Z score accurately measures the number of standard deviations above or below the mean of the data points.

The formula for calculating the z-score is

z = (data points – mean) / (standard deviation).

It is also expressed as z = (x-μ) / σ.

  • A positive z-score indicates that the data points are above average.
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  • A z-score close to 0 means that the data points are close to average.
  • The normal curve is symmetric with respect to the mean and needs to be investigated.

Therefore, to find the percentage of the area under the normal curve between two z-scores, both above the mean, you need to look at the sum of the areas between the z-score and the mean.

Learn more about z-score from here brainly.com/question/16768891

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7 0
1 year ago
Determine whether the graph shows a positive correlation, a negative correlation, or no correlation. If there is a positive or n
RUDIKE [14]
If the points are scattered it’s no correlation
7 0
3 years ago
A set of middle school student heights are normally distributed with a mean of 150 centimeters and a standard deviation of 20 ce
julsineya [31]

Answer:

The proportion of students whose height are lower than Darnell's height is 71.57%

Step-by-step explanation:

The complete question is:

A set of middle school student heights are normally distributed with a mean of 150 centimeters and a standard deviation of 20 centimeters. Darnel is a middle school student with a height of 161.4cm.

What proportion of proportion of students height are lower than Darnell's height.

Answer:

We first calculate the z-score corresponding to Darnell's height using:

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

We substitute x=161.4 , \mu=150, and \sigma=20 to get:

Z=\frac{161.4-150}{20} \\Z=0.57

From the normal distribution table, we read 0.5 under 7.

The corresponding area is 0.7157

Therefore the proportion of students whose height are lower than Darnell's height is 71.57%

8 0
3 years ago
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