3 times a number w is less than 18

Mathematics

1 answer:

Mashcka [7]3 years ago

8 0

Answer:

3w-18

Step-by-step explanation:

1) 3 <em>times </em>a number w: this means you are multiplying 3 times a number, w

2) <em>less than</em>: less than means subtraction, so you would subtract 18.

I really hope this helps you, I hope my explaination makes sense, and good luck with your assignment.

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alexira [117]

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Now group the x's on the left and the numbers on the right

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If $-2 < x \le 3,$ then find all possible values of $5x + 1.$ Give your answer in interval notation.

kotegsom [21]

Answer: $(-9, 16]$

This is the interval from -9 to 16. Exclude -9 but include 16.

=====================================================

Work Shown:

The idea is to multiply all sides by 5, then add 1 to all sides

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$5(-2) < 5x \le 5(3)$

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This converts to the interval notation $(-9, 16]$

note: a curved parenthesis means "do not include this value in the solution set"; while a square bracket has us include the value. So we exclude -9 and include 16.

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Whitepunk [10]

Answer:

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