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olga_2 [115]
3 years ago
7

What happens when an inequality expression is divided by the same number. Does the sign stay the same each time or change direct

ions? If the sign changes, explain what made the direction of the sign change. Describe a rule for this.
Mathematics
2 answers:
irga5000 [103]3 years ago
7 0
The sign only changes when divided or multiplied by a negative number.
iragen [17]3 years ago
3 0
Divided by a positive number, not change

divided by a negative number, change sign

Example

10 > 5

divided by 5, no change in sign: 2 >1

but divided by -5, change sign: -2 < -1
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Most college-bound students take either the SAT(Scholastic Assessment Test) or the ACT (which originally stood for American coll
Jlenok [28]

Answer:

Luis would need to have a SAT score of 574.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Nicole's z-score:

ACT scores have a mean of about 21 with a standard deviation of about 5, which means that \mu = 21, \sigma = 5

Nicole gets a score of 24, which means that X = 24. Her z-score is:

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

Z = \frac{24 - 21}{5}

Z = 0.6

What score would Luis have to have on the SAT to have the same standardized score(z-score) as Nicole's standardized score on the ACT?

Luis would have to get a score with a z-score of 0.6, that is, X when Z = 0.6.

SAT scores have a mean of about 508 with a standard deviation of about 110, which means that \mu = 508, \sigma = 110.

The score is:

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

0.6 = \frac{X - 508}{110}

X - 508 = 0.6*110

X = 574

Luis would need to have a SAT score of 574.

8 0
2 years ago
The linear regression equation is y = 61. 93x - 1. 79. According to the model, the slope can be interpreted as:
devlian [24]

The slope of the linear regression equation y = 61. 93x - 1. 79 is attached with the response.

<h3>What is linear regression?</h3>

Linear regression is the most primary and generally used predictive research. Regression calculations are utilised to represent data and to describe the association.

The slope of the linear regression equation represented in the graph is the straight-line cutting the intercepts on the y axis at 1.79.

To know more about linear regression follow

brainly.com/question/21738659

#SPJ4

7 0
2 years ago
Select ALL the correct answers,
Margaret [11]

Answer:

The second and third

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which is the function rule that will transform a geometric figure by reflecting across the y-axis and
likoan [24]
I think it’s between the first and third one
8 0
2 years ago
Cell phone Plan A costs$70 per month and comes with a free$500 phone. Cell phone Plan Bcosts$50 per month but does not come with
timofeeve [1]

Answer:

25

Step-by-step explanation:

A = 70*M

B = 500 + 50*M

Costing the same means equal, so we have the equation:

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-50M           -50M

 

20M = 500

20M / 20 = 500 / 20

m- 25 months

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2 years ago
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