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3 years ago

What is the solution to the compound inequality 5x + 7 ≤ −8 or 3x + 7 > 19?

Mathematics

1 answer:

Korvikt [17]3 years ago

8 0

5x + 7 ≤ −8 or 3x + 7 > 19

5x ≤ - 15 or 3x > 12

x ≤ - 3 or x > 4

Answer

x ≤ - 3 or x > 4

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3 years ago

A bag of chocolate mix weighed 1/4 of a kilogram could make enough brownies to feed 1/7 of the students at school how many bags

Hoochie [10]

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so we know one bag can do 1/7 of all students, how many will it be needed to do 7/7?

well, in 7/7 there are seven 7/7, so, 7 bags then, or one could say,

$\bf \begin{array}{ccll}
\stackrel{chocolate}{bag}&\stackrel{fraction}{students}\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1&\frac{1}{7}\\\\
x&\frac{7}{7}
\end{array}\implies \cfrac{1}{x}=\cfrac{\quad \frac{1}{7}\quad }{\frac{7}{7}}\implies \cfrac{1}{x}=\cfrac{1}{7}\cdot \cfrac{7}{7}
\\\\\\
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3 years ago