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storchak [24]
3 years ago
7

5x – 10 ≤ 20? A) (–∞, 2] B) (–∞, 2) C) (–∞, 6] D) (–∞, 6)

Mathematics
2 answers:
Bogdan [553]3 years ago
5 0
(-oo, 6] I just did this on edgenuity and the "oo" is supposed to be the symbol
hammer [34]3 years ago
3 0

Answer:

The solutions of 5x-10\le \:20 are (-\infty \:,\:6], so C is the correct answer.

Step-by-step explanation:

The expression 5x-10\le \:20 is an inequality. An inequality is a mathematical statement that compares two expressions using an inequality sign.

The important thing about inequalities is that there can be multiple solutions.

To find all the solutions of 5x-10\le \:20 you must:

\mathrm{Add\:}10\mathrm{\:to\:both\:sides}\\5x-10+10\le \:20+10

\mathrm{Simplify}\\5x\le \:30

\mathrm{Divide\:both\:sides\:by\:}5\\\frac{5x}{5}\le \frac{30}{5}

x\le \:6

The graph of the inequality x\le \:6 is shown below.

According with the graph the solutions are less than or equal to 6, using interval notation (-\infty \:,\:6].

The solutions of 5x-10\le \:20 are (-\infty \:,\:6], so C is the correct answer.

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Step-by-step explanation:

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