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Ann [662]
3 years ago
5

What is the value of -9r - 7 when r=2

Mathematics
1 answer:
OLEGan [10]3 years ago
4 0

Answer:

-25

Step-by-step explanation:

Substitute r = 2 in the equation.

-9(2) - 7 = -18 - 7 = -25

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which of the following are right triangles: a triangle with side lenghts 6 inches, 8 inches,10 inches, a triangle with side leng
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9514 1404 393

Answer:

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Step-by-step explanation:

It can be helpful to memorize a few of the Pythagorean triples that show up in Algebra problems. Their multiples also form right triangles.

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The triple (6, 8, 10) is the first one of these, multiplied by 2 inches.

The only triple that is a sequence of consecutive integers is (3, 4, 5), so you know immediately that (4, 5, 6) does not form a right triangle.

Of course, you can check any of them to see if the squares of the smaller two numbers total the square of the larger number:

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3 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
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Ulleksa [173]
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ella [17]

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Step-by-step explanation:

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