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icang [17]
3 years ago
8

Allie needs at least 50 hours of community service for social studies class. She already has 20. How many more hours does she ne

ed? Write an inequality to model this situation.
Mathematics
2 answers:
zaharov [31]3 years ago
8 0

Answer:

B) x + 20 ≥ 50

Step-by-step explanation:


Hunter-Best [27]3 years ago
3 0
50 hours of community service
already has 20

20 + x = 50
      (30)


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Find the distance between the points.<br> (r, s) and (0, 0)
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Answer:  \sqrt{r^2+s^2

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

Reason:

Plot the points (0,0) and (r,s). You can place (r,s) anywhere you want.

Connect the two points mentioned and form a right triangle such that the segment from (0,0) to (r,s) is the hypotenuse of said right triangle.

The horizontal leg has a length of r-0 = r units, while the vertical leg will be 's' units.

Check out the diagram below.

We then apply the pythagorean theorem to say r^2+s^2 = h^2 where h is the hypotenuse. Solving for h gets us h = \sqrt{r^2+s^2}. We only focus on the positive square root since a negative hypotenuse makes no sense.

Since we made the hypotenuse the segment with endpoints (r,s) and (0,0), this means the hypotenuse length and the distance are the same thing.

Therefore, the distance from (r,s) to (0,0) is \sqrt{r^2+s^2}

As an alternative, you can use the distance formula to get the same answer. The distance formula is effectively the pythagorean theorem phrased a different way.

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2 years ago
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8 0
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Read 2 more answers
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