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2 years ago

Why did the inequality sign flip?

Mathematics

1 answer:

kumpel [21]2 years ago

6 0

Answer:

We multiplied by a negative number (-8)

We divided by a negative number (-8)

Step-by-step explanation:

Multiplying or dividing both sides of an equation by a negative number changes the inequality of the equation, because it changes the sign of each side of the equation

You might be interested in

Which transformation can verify congruence by sliding one triangle over another

never [62]

Translation by moving the two shapes to the same points you can verify its congruence.

7 0

3 years ago

The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airp

yKpoI14uk [10]

Answer:

Confidence Interval in 95% confidence level for the quality rating is (6.06,7.46)

Step-by-step explanation:

Confidence Interval can be calculated using the formula M±ME where

M is the mean of the sample
ME is the margin of error in a given confidence level

Using the sample obtained from 50 business travelers we get

Mean of the sample is 6.76
standard deviation of the sample is 2.526

Margin of error (ME) around the mean using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding statistic in 95% confidence level (1.96)

s is the standard deviation of the sample (2.526)

N is the sample size (50)

Using the numbers in the formula we get:

ME= $\frac{1.96*2.526}{\sqrt{50} }$ ≈ 0.70

Then the confidence interval becomes 6.76±0.70

6 0

3 years ago

70=x+16? Show how to do

Lina20 [59]

Subtract 70 from 16, and you get 54.

4 0

2 years ago

-21+(-59) what is the answer

Lemur [1.5K]

Answer:

-80

Step-by-step explanation:

4 0

3 years ago

How do you do one-step equations?

strojnjashka [21]

An example of a one step equation would be 5+5=10
But equations with more than one step would be like: find the sum of 5+5 and then find 50% of the sum of 5+5

6 0

3 years ago