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Crazy boy [7]
3 years ago
12

How do you graph a linear inequality in two variables

Mathematics
1 answer:
FrozenT [24]3 years ago
7 0
The graph of an inequality in two variables is the set of points that represents all solutions to the inequality. A linear inequality divides the coordinate plane into two halves by a boundary line where one half represents the solutions of the inequality. The boundary line is dashed for > and < and solid for ≤ and ≥. The half-plane that is a solution to the inequality is usually shaded.
Example:

Is (1, 2) a solution to the inequality
2x+3y>1
2times1+3times2>1
2+5>1
7>1
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Evaluate and reduce:<br> 12 + (12)<br> Enter the number that belongs in the<br> green box.<br> [?]
Firlakuza [10]

Answer:

24

Step-by-step explanation:

12 + (12)

first do for the bracket

12 + 12

24

3 0
3 years ago
An author argued that more basketball players have birthdates in the months immediately following July​ 31, because that was the
Lady_Fox [76]

Answer:

There is sufficient evidence to warrant rejection of the claim that professional basketball players are born in different months with the same​ frequency.

Step-by-step explanation:

In this case we need to test whether there is sufficient evidence to warrant rejection of the claim that professional basketball players are born in different months with the same​ frequency.

A Chi-square test for goodness of fit will be used in this case.

The hypothesis can be defined as:

<em>H₀</em>: The observed frequencies are same as the expected frequencies.

<em>Hₐ</em>: The observed frequencies are not same as the expected frequencies.

The test statistic is given as follows:

 \chi^{2}=\sum{\frac{(O-E)^{2}}{E}}

The values are computed in the table.

The test statistic value is \chi^{2}=128.12.

The degrees of freedom of the test is:

n - 1 = 12 - 1 = 11

Compute the <em>p</em>-value of the test as follows:

p-value < 0.00001

*Use a Chi-square table.

p-value < 0.00001 < α = 0.05.

So, the null hypothesis will be rejected at any significance level.

Thus, there is sufficient evidence to warrant rejection of the claim that professional basketball players are born in different months with the same​ frequency.

6 0
3 years ago
Micha washed a car in 20 minutes. At this rate, how many hours would it take to wash 9 cars?
blsea [12.9K]

Answer:

3 hours

Step-by-step explanation:

he washed one car in 20 minutes so 9 cars will be 20 x 9=180minutes which is 3 hours

5 0
2 years ago
during a basketball game jorell attempted 40 shots and made 18.He says he made 40% of the shots he took.Is Jorell correct?
Drupady [299]
18 is 45% of 40, so no he is incorrect
6 0
3 years ago
Read 2 more answers
Anyone answer please it is my H.W <br>don't spam ❌❌​
Nata [24]

Answer:

2a) = soln

20/3

2) divide the numeral by dinominator..

3)a) soln 7 3/4

4*7+3

= 31

do all like this ❣️

3 0
2 years ago
Read 2 more answers
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