If 11x - 7= 2, then x=

If the height of the cylinder is halved and the diameter is double, by what factor will the volume of the cylinder change

uysha [10]

Let the radius be: r and height be h
volume = πr²
if the radius is halved then radius = r/2
and height is doubled, so height= 2h
volume = πr*r/4*2h = π*r²*h/2
Thus the volume will be halved.

8 0

4 years ago

Find the perimeter of the figure. Round to the nearest tenth if needed. a=50 b=83 c=65

Leviafan [203]

Answer:

263

Step-by-step explanation:

50 + 83 + 65 + 65 = 263

i don’t know witch sides are which but here you go

5 0

3 years ago

4.

Usimov [2.4K]

Answer:

Yes, 19.3649167 < 20

Step-by-step explanation:

Do the Pythagorean theorem to figure out the height.

35^2 + x^2 = 40^2

1225 + x^2 = 1600

x^2 = 375

x = 19.3649167

7 0

3 years ago

As shown at the right, rectangle abcd has vertices c and d on the. V-axis and vertices a and b on the part of the parabola y — 9

Sergio039 [100]

a) The perimeter function of the rectangle is $p = 18\cdot x -2\cdot x^{3}$ .

b) The domain of the perimeter function is $x \in [-3, 3]$ .

<h3>How to analysis the perimeter formula of a rectangle inside a parabola</h3>

a) The perimeter of a rectangle ( $p$ ) is the sum of the lengths of its four sides:

$p = AB\cdot AC$ (1)

If we know that $AB = 2\cdot x$ and $AC = 9-x^{2}$ , then the perimeter of the rectangle is represented by the following formula:

$p = 2\cdot x \cdot (9-x^{2})$

$p = 18\cdot x -2\cdot x^{3}$

The perimeter function of the rectangle is $p = 18\cdot x -2\cdot x^{3}$ . $\blacksquare$

b) The domain of the function is the set of values of $x$ associated to the function. After a quick inspection, we find that the domain of the perimeter function is $x \in [-3, 3]$ . $\blacksquare$

<h3>Remark</h3>

The statement is incomplete and poorly formatted. The correct form is described below:

As shown at the right, rectangle ABCD has vertices C and D on the x-axis and vertices A and B on the part of the parabola $y = 9-x^{2}$ that is above the x-axis. a) Express the perimeter $p$ of the rectangle as a function of the x-coordinate of A. b) What is the domain of the perimeter function?

To learn more on rectangles, we kindly invite to check this verified question: brainly.com/question/10046743

4 0

2 years ago

Mark is buying different nuts to make a mixed nut platter to serve at a party. He buys 1.2 kilograms of peanuts, 300 grams of al

Nutka1998 [239]

Answer:

1900

Step-by-step explanation:

1 kg = 1000g

1.2kg = x

1 kgx = 1200 kg.g

1kg. 1kg

x = 1200 g

1 decagram = 10g

40 decagram = x

1 dg.x = 400 dg.g

1 dg. 1 dg

x = 400g

so the total= 1200g +300 + 400g=1900g

without the unit = 1900

8 0

3 years ago