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Hoochie [10]
3 years ago
15

Which graph represents the solution set for the inequality StartFraction one-half EndFraction x is less than or equal to 18.x ≤

18? A number line from 0 to 10 in increments of 1. A point is at 9 and a bold line starts at 9 and is pointing to the right. A number line from 0 to 60 in increments of 6. A point is at 36 and a bold line starts at 36 and is pointing to the right. A number line from 0 to 10 in increments of 1. A point is at 9 and a bold line starts at 9 and is pointing to the left. A number line from 0 to 60 in increments of 6. A point is at 36 and a bold line starts at 36 and is pointing to the left.
Mathematics
2 answers:
Mrrafil [7]3 years ago
3 0

Answer:

A number line from 0 to 60 in increments of 6. A point is at 36 and a bold line starts at 36 and is pointing to the left. ⇒ last answer

Step-by-step explanation:

* <em>Lets explain how to solve the problem</em>

- <u><em>When solving an inequality, there are some important points:</em></u>

# If the inequality is x > a, then it represented on the number line by

  a ray with empty small circle as end starts at a and pointed to

  the right (⇒ ∞)

# If the inequality is x ≥ a, then it represented on the number line by

  a ray with bold small circle as end starts at a and pointed to the

  right (⇒ ∞)

# If the inequality is x < a, then it represented on the number line

  by a ray with empty small circle as end starts at a and pointed to

  the left (⇒ -∞)

# If the inequality is x ≤ a, then it represented on the number line by

  a ray with bold small circle as end starts at a and pointed to the

  left (⇒ -∞)

* <em>Lets solve the problem</em>

∵ 1/2 x ≤ 18

- Multiply both sides by 2

∴ x ≤ 36

- To represent it draw a number line from 0 to 60 and the counted

 by 6 as 0, 6, 12, 18, 24, 30, 36, 42, 48, 54, 60

- Draw a ray with bold end starts at 36 and pointed to the left

∴ A number line from 0 to 60 in increments of 6. A point is at 36 and

  a bold line starts at 36 and is pointing to the left.

snow_tiger [21]3 years ago
3 0

Answer:

its d my dudes

Step-by-step explanation:

Naetoosmart
2 years ago
thank you for keeping it simple.
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Answer:

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Step-by-step explanation:

Data given and notation  

X_{1}=253 represent the number with no defects in sample 1

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n_{2}=300 sample 2

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Concepts and formulas to use  

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Null hypothesis:p_{1} - p_2}=0  

Alternative hypothesis:p_{1} - p_{2} \neq 0  

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z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}   (1)  

Where \hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{253+196}{300+300}=0.748  

z-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.  

Calculate the statistic  

Replacing in formula (1) the values obtained we got this:  

z=\frac{0.843-0.653}{\sqrt{0.748(1-0.748)(\frac{1}{300}+\frac{1}{300})}}=5.358    

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Comparing the p value with the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can say that we have singificantly differences between the two proportions.  

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Answer:

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Step-by-step explanation:

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