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attashe74 [19]
4 years ago
8

What is the value of the expression below when x=3x=3?

Mathematics
1 answer:
arlik [135]4 years ago
4 0

Answer:

7(3)^2-3(3)-6=48

Step-by-step explanation:

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17........................
Alex Ar [27]

Answer:

Step-by-step explanation:

First, add 3 to both sides:

-5 = -6∛(x²)

Next, divide both sides by -6, to isolate ∛(x²):

5/6 = ∛(x²)

Eliminate the radical by cubing both sides:

5³

---- = x²

6³

Finally, take the square root of both sides.  This will isolate x.  There will be two roots:  one +, the other -.

x = ±√(5³/6³)

This simplifies to:  ± (5/6)∛(5/6).

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4 years ago
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Describe a pentagonal prism.
ValentinkaMS [17]

Step-by-step explanation:

A pentagonal prism is a prism having two pentagonal bases and five rectangular sides. It is a heptahedron.

The regular right pentagonal prism is uniform polyhedron . Its dual polyhedron is the pentagonal dipyramid.

The surface area and volume for the right regular pentagonal prism of unit edge length are

S = 5+1/2sqrt(5(5+2sqrt(5)))

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Answer:

Step-by-step explanation:

<u><em>An equation y = kx represent a proportional relation and k = </em></u>\frac{y}{x}<u><em> </em></u>

⊕ Yes, the constant of proportionality is 3.5

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