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3 years ago

Graph the inequality: a) 4x>18 b) x-8>_24

Mathematics

1 answer:

BigorU [14]3 years ago

5 0

Step-by-step explanation:

<, > - open circle

≤, ≥ - closed circle

<, ≤ - draw the line to the left

>, ≥ - draw the line to the right

$a)\ 4x>18\qquad\text{divide both sides by 4}\\\\\dfrac{4x}{4}>\dfrac{18}{4}\\\\x>4.5\\\\b)\ x-8\geq24\qquad\text{add 8 to both sides}\\\\x-8+8\geq24+8\\\\x\geq32$

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jekas [21]

Answer:

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So first you must find what i represents so here it is

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Now here it shows

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Now to find the C

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3 years ago

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Marianna [84]

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The interval is calculated as

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a. For a 95% CI, z-value is 1.96.

Solving:

54,000 ± $1.96.\frac{6000}{\sqrt{12} }$

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54,000 ± 1.96*1732.102

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b. The mean starting salary for college students in 2017 is $50,516, which is in the confidence interval. Therefore, since we 95% sure the real mean is between 50188 and 57812, there was no significant change since 2017.

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3 years ago

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