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morpeh [17]
2 years ago
13

-7- 2x² - 6 = −2x² + 1 First Step: 13- 2x² = 2x² + 1 What property is this

Mathematics
1 answer:
lorasvet [3.4K]2 years ago
8 0

Answer:

Combine like terms, although the provided answer is missing a "-" sign in front of the "13."  

Step-by-step explanation:

Combine like terms.  The -7 and -6 can be added to produce -13.

The correct result is <u>-</u>13 - 2x^2 = <u>-</u>2x^2 + 1  [Not _13- 2x² = _2x² + 1

Perhpas the initial equation is written incorrectly(?)

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Answer:

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Step-by-step explanation:

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The volume of the triangular prism is the product of the area of its base (6 ft²) and its height (4 ft).

  V = Bh = (6 ft²)(4 ft) = 24 ft³ . . . . matches choice A

_____

<em>Comment on the triangle</em>

You know the 3-4-5 triangle is a right triangle, because you have seen those numbers many times in relation to the Pythagorean theorem. If you don't know that, then you can check to see by using the Pythagorean theorem:

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In any event, there are other means for finding the area of the triangle based on the lengths of its sides. You will get the same area result.

Using Heron's formula, s = (a+b+c)/2 = (3+4+5)/2 = 6.

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4 years ago
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