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3 years ago

Pls help ;-;

Mathematics

2 answers:

anyanavicka [17]3 years ago

6 0

Answer:

Step-by-step explanation:

A closed circle means inclusive, and -2 is included in values that would make the equation true. Then you just have to test another number greater than and less than -2 to see which way the arrow should point.

-3(-3) + 1 < 7

9 + 1 < 7

10 < 7 FALSE

-3(0) + 1 < 7

1 < 7 TRUE

All values (including -2) will make this equation true

PIT_PIT [208]3 years ago

4 0

Question:

Which number line shows all the values of x that make the inequality

-2x - 7 ≥ 13 true?

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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><u>Solution:</u></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

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

<em><u>Ratio for the volumes of two cylinders</u></em>

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

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

3 years ago

Matt he bought five book he needed 9 how many more he needed

Dimas [21]

Answer:

Step-by-step explanation:

4 0

3 years ago

Parallel to y=2/3x+4 and goes through (-9,-2)

Ostrovityanka [42]

Hey there :)

y = $\frac{2}{3}x + 4$

Since this line is parallel to the line to be found, both have the same slope: $\frac{2}{3}$

Coordinates: ( - 9 , - 2 )

y - ( -2 ) = $\frac{2}{3}$ ( x - ( -9 ) )
$y + 2 = \frac{2}{3} x + 6$
$y = \frac{2}{3} x + 6 - 2$

$y = \frac{2}{3}x + 4$

8 0

3 years ago

Read 2 more answers

What is the answer to this?

egoroff_w [7]

The answer is 3.2 as a decimal. In mixed for it is 3 1/5 and in simplest form it is 16/15

4 0

2 years ago

Read 2 more answers

Can someone help me write an equation for this problem?

11Alexandr11 [23.1K]

Y=800+175(9)
And then just solve for y.

8 0

3 years ago