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2 years ago

Plz help!!!!!!!!!!!!!!

Mathematics

1 answer:

GarryVolchara [31]2 years ago

5 0

Answer: x < 2

Step-by-step explanation:

2x + 1 < 5

Subtract 1 from both sides:

2x < 4

Divide both sides by 2:

x < 2 (x is less than 2)

Graph: ←-------o -2

Interval Notation: (-∞, -2)

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1 Point

I am Lyosha [343]

Option C

The ratio for the volumes of two similar cylinders is 8 : 27

<h3>Solution:</h3>

Let there are two cylinder of heights "h" and "H"

Also radius to be "r" and "R"

$\text { Volume of a cylinder }=\pi r^{2} h$

Where π = 3.14 , r is the radius and h is the height

Now the ratio of their heights and radii is 2:3 .i.e

$\frac{\mathrm{r}}{R}=\frac{\mathrm{h}}{H}=\frac{2}{3}$

Ratio for the volumes of two cylinders

$\frac{\text {Volume of cylinder } 1}{\text {Volume of cylinder } 2}=\frac{\pi r^{2} h}{\pi R^{2} H}$

Cancelling the common terms, we get

$\frac{\text {Volume of cylinder } 1}{\text {Volume of cylinder } 2}=\left(\frac{\mathrm{r}}{R}\right)^{2} \times\left(\frac{\mathrm{h}}{\mathrm{H}}\right)$

Substituting we get,

$\frac{\text {Volume of cylinder } 1}{\text {Volume of cylinder } 2}=\left(\frac{2}{3}\right)^{2} \times\left(\frac{2}{3}\right)$

$\frac{\text {Volume of cylinder } 1}{\text {Volume of cylinder } 2}=\frac{2 \times 2 \times 2}{3 \times 3 \times 3}$

$\frac{\text {Volume of cylinder } 1}{\text {Volume of cylinder } 2}=\frac{8}{27}$

Hence, the ratio of volume of two cylinders is 8 : 27

7 0

2 years ago

Answer the following..

Greeley [361]

1. 25%

2. 24.5

3. 66.666666666667%

Have a good day! :)

8 0

3 years ago

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Geometry, I answered the one before this but not sure about this one anyone know?

Elan Coil [88]

Answer:

QV = 36 UNITS

Step-by-step explanation:

Centroid of a triangle divides the median in the ratio 2 : 1.

QU is the median and V is Centroid. Therefore,

QV : VU = 2 : 1

Let QV = 2x & VU = x

QV + VU = QU

2x + x = 54

3x = 54

x = 54/3

x = 18

QV = 2x = 2*18 = 36

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2 years ago

Which table shows a linear function

natka813 [3]

I think it’s the second one but I’m not 100%

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2 years ago

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Solve the inequality for w. - 11 >w- 19

Vaselesa [24]

Answer:

w < 8

Step-by-step explanation:

This means w can be any number below 8.

Example;

w = 7

w = 6

w = 5

and so on...

(Changed original answer. Thought it had said -11 < w - 19)

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2 years ago

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