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3 years ago

Of all the species in the world, 4 44 out of every 5 55 are insects. What percentage of species are insects?

Mathematics

1 answer:

Vsevolod [243]3 years ago

6 0

80% of species are insects.

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Cylinder and a cone have the same diameter: 8 inches. The height of the cylinder is 5 inches. The height of the cone is 15 inche

ss7ja [257]

Answer:

$V_{cylinder}=251.2\ in^3,$

$V_{cone}=251.2\ in^3,$

$V_{cylinder}=V_{cone}.$

Step-by-step explanation:

The volume of the cylinder is

$V_{cylinder}=\pi r^2 h,$

where r is the radius of a base circle and h is the cylinder's height.

If cylinder has diameter of 8 inches, then its radius is 4 inches. The height of the cylinder is 5 inches. Thus, the volume of the cylinder is

$V_{cylinder}=3.14\cdot 4^2\cdot 5=251.2\ in^3.$

The volume of the cone is

$V_{cone}=\dfrac{1}{3}\pi r^2 h,$

where r is the radius of a base circle and h is the cone's height.

If cone has diameter of 8 inches, then its radius is 4 inches. The height of the cone is 15 inches. Thus, the volume of the cone is

$V_{cylinder}=\dfrac{1}{3}\cdot 3.14\cdot 4^2\cdot 15=251.2\ in^3.$

As you can see the cylinder and the cone have the same volume.

4 0

3 years ago

3x + 4 = 8x – 11 does anyone know how to do this

Nataly [62]

Answer:

x = 3

Step-by-step explanation:

Subtract 8x from both sides.

3x+4−8x=8x−11−8x

−5x+4=−11

Subtract 4 from both sides.

−5x+4−4=−11−4

−5x=−15

Divide both sides by -5.

−5x

−5

−15

−5

x=3

8 0

2 years ago

Read 2 more answers

Solve. Check your solution.<br> -4+s= -68

Andrews [41]

-64 + -4 = -68

That is because 64 + 4 = 68 and the negatives in this case are the same way as if it was all positive.

6 0

2 years ago

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Factor completely n^4-1

taurus [48]

N^4 - 1 = (n^2 - 1)(n^2 + 1)

= (n + 1)(n - 1)(n^2 + 1)

4 0

2 years ago

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Match the verbal expression (term) with its algebraic expression (definition).

serious [3.7K]

Answer:

match

Step-by-step explanation:

4 0

3 years ago