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ivann1987 [24]
3 years ago
11

Evaluate the expression for the given value of the variuble with step by step explanation

Mathematics
1 answer:
GaryK [48]3 years ago
7 0

Substitute the value of b = -2 to the expression

-4b-8+(-1)-b^2+2b^3=2b^3-b^2-4b-8-1=2b^3-b^2-4b-9\\\\2(-2)^3-(-2)^2-4(-2)-9=2(-8)-4+8-9=-16-4+8-9=-21

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A sphere has a volume of 36 (3.14) cm cube. what is the diameter of the sphere
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Answer:

<h2>Diameter = 6 cm</h2>

Step-by-step explanation:

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V=\dfrac{4}{3}\pi R^3

We have V = 36(3.14) cm³ = V = 36π cm³. Substitute:

\dfrac{4}{3}\pi R^3=36\pi      <em>divide both sides by π</em>

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4R^3=108            <em>divide both sides by 4</em>

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3 years ago
Which angle measures are correct? Select three options,
zhenek [66]

Answer:

m∠W = 125°

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m∠Z = 55°

Step-by-step explanation:

The explanation of angle measures is shown below:-

The shape which is parallelogram WXYZ. m∠Y = 125

A parallelogram represents the shape of quadrilateral in which both opposite sides and opposite angles are similar to each other. One parallelogram diagonals bisect each other. Consecutive angles are also supplementary to a parallelogram.

In WXYZ parallelogram is there

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m ∠ Z = 180 - 125

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m∠W = 125°

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which is the angle of Consecutive in a parallelogram called supplementary)

m ∠ X + 125 = 180

m ∠ X = 180 - 125

After solving the above equation we will get

m ∠ X = 55°

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